DOE G 151.1-5, Biosafety Facilities
Functional areas: Defense Nuclear Facility Safety and Health Requirement, Safety and Security
The Guide assists DOE/NNSA field elements and operating contractors in incorporating hazardous biological agents/toxins into emergency management programs, as required by DOE O 151.1C. No cancellation. Canceled by DOE G 151.1-1B.
Related From:
Version history and related documents
Related documents
- DOE O 151.1CComprehensive Emergency Management System
- DOE M 151.1-1Power Marketing Administration Emergency Management Program Manual
- DOE G 151.1-1AEmergency Management Fundamentals and the Operational Emergency Base Program
- DOE G 151.1-2Technical Planning Basis
- DOE G 151.1-3Programmatic Elements
- DOE G 151.1-4Response Elements
Document text
Text extracted from the attached file. Refer to the original document for the authoritative version.
Section 1
NOT MEASUREMENT
SENSITIVE
DOE G 151.1-5
7-11-07
BIOSAFETY FACILITIES
Emergency Management Guide
[This Guide describes suggested nonmandatory approaches for meeting requirements. Guides
are not requirements documents and are not to be construed as requirements in any audit or
appraisal for compliance with the parent Policy, Order, Notice, or Manual.]
U.S. Department of Energy
Washington, D.C.
AVAILABLE ONLINE AT: INITIATED BY:
www.directives.doe.gov National Nuclear Security Administration
Office of Emergency Management
i DOE G 151.1-5
7-11-07
DOE G 151.1-5 - Biosafety Facilities
Table of Contents
1. BIOSAFETY FACILITIES ............................................................................................... 1-1
1.1 Introduction......................................................................................................................1-1
1.2 General Approach ............................................................................................................1-2
2. HAZARDOUS BIOLOGICAL MATERIALS AND BIOSAFETY............................... 2-1
2.1 Hazardous Biological Agents and Toxins........................................................................2-1
2.2 Select Agent Regulations.................................................................................................2-2
2.3 Principles of Biosafety, Containment, and Barriers.........................................................2-3
2.4 Risk Assessment and Biosafety Levels............................................................................2-6
2.5 Routine Surveillance of Biosafety Controls ..................................................................2-10
3. OPERATIONAL EMERGENCIES INVOLVING THE RELEASE OF
HAZARDOUS BIOLOGICAL MATERIALS............................................................ 3-1
3.1 DOE O 151.1C and Hazardous Biological Materials ......................................................3-1
3.2 Emergency Management Issues.......................................................................................3-2
3.3 Biological Operational Emergencies ...............................................................................3-5
3.4 Biological Agent/Toxin Transport Mechanisms..............................................................3-6
3.5 Environmental Dispersion ...............................................................................................3-7
3.6 Infected Host....................................................................................................................3-7
3.7 Contamination..................................................................................................................3-9
3.8 Biological Agent Release Scenarios ................................................................................3-9
3.9 Recognizing Operational Emergencies..........................................................................3-13
3.10 Initial Protective Actions ...............................................................................................3-15
3.11 Public Health Response .................................................................................................3-18
4. EMERGENCY MANAGEMENT PROGRAM FOR BIOSAFETY FACILITIES:
TECHNICAL PLANNING BASES ............................................................................. 4-1
4.1 Hazards Survey ................................................................................................................4-2
Section 2
4.2 Emergency Planning Hazards Assessment (EPHA) ........................................................4-3
4.2.1 Define and Describe Facility and Operations ......................................................4-4
4.2.2 Characterize the Hazardous Materials..................................................................4-4
4.2.3 Select Scenarios for Analysis...............................................................................4-4
4.2.4 Analysis of Scenarios...........................................................................................4-8
4.2.5 Identify Recognition Factors and Protective Actions ..........................................4-9
4.2.6 Emergency Planning Zone (EPZ) ......................................................................4-10
4.3 Example Release Scenarios ...........................................................................................4-11
4.3.1 Source and Release Parameters..........................................................................4-11
4.3.2 Recognition Factors ...........................................................................................4-12
4.3.3 Initial Protective Actions....................................................................................4-13
5. EMERGENCY MANAGEMENT PROGRAM FOR BIOSAFETY FACILITIES:
PROGRAMMATIC ELEMENTS ............................................................................... 5-1
5.1 Program Administration ..................................................................................................5-1
5.2 Training and Drills...........................................................................................................5-3
5.3 Exercises ..........................................................................................................................5-4
5.4 Readiness Assurance........................................................................................................5-5
6. EMERGENCY MANAGEMENT PROGRAM FOR BIOSAFETY FACILITIES:
ii DOE G 151.1-5
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RESPONSE ELEMENTS ............................................................................................. 6-1
6.1 Emergency Response Organization (ERO) .....................................................................6-1
6.2 Offsite Response Interfaces .............................................................................................6-2
6.3 Emergency Facilities and Equipment ..............................................................................6-3
6.4 Emergency Categorization and Classification .................................................................6-4
6.5 Notifications and Communications..................................................................................6-5
6.6 Consequence Assessment ................................................................................................6-6
6.7 Protective Actions and Reentry .......................................................................................6-8
6.8 Emergency Medical Support............................................................................................6-9
6.9 Emergency Public Information ......................................................................................6-10
6.10 Termination and Recovery.............................................................................................6-11
APPENDIX A. Operational Emergency Scenarios for Biosafety Facilities...A-1
Section 3
APPENDIX B. Bibliography.......................................................................... B-1
List of Figures
Figure 3-1. Schematic Representation of Biological Release Scenario ..................................................3-11
List of Tables
Table 2-1. Summary of Essential Elements of the Four BMBL Biosafety Levels (BSLs) for Infectious
Agents ........................................................................................................................................................2-9
Table 3-1. Transport Mechanisms and Barriers/Controls .......................................................................3-12
Table 4-1. Source and Release Parameters .............................................................................................4-16
Table 4-2. Recognition Factors...............................................................................................................4-20
Table 4-3. Example Protective Actions ..................................................................................................4-22
Table 4-4. Examples of Generic Initial Protective Actions ....................................................................4-24
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1. BIOSAFETY FACILITIES
1.1 Introduction
DOE O 151.1C, Comprehensive Emergency Management System, describes the
Department of Energy (DOE) and National Nuclear Security Administration (NNSA)
Emergency Management System. The Order sets Departmental policy, assigns roles and
responsibilities, and provides the framework for the development, coordination, control,
and direction for DOE/NNSA emergency management programs. Requirements for
emergency planning, preparedness, readiness assurance, and response activities are
established and the approach for effectively integrating these activities under a
comprehensive, all-emergency concept is described. Using this approach, a
DOE/NNSA facility/site develops and participates in an integrated and comprehensive
emergency management program to ensure that DOE can respond effectively and
efficiently to Operational Emergencies (OEs) to protect workers, the public, and the
environment. Emergency management programs are designed to ensure that all
emergencies are promptly recognized and categorized, emergencies are reported and
notifications are made, and parameters associated with the emergency are monitored to
detect changed or degraded conditions.
Since 1991, DOE/NNSA emergency management programs have focused on radioactive
materials and hazardous chemicals. However, priorities in national security emphasizing
anti-terrorism have caused a change in national security research priorities at
DOE/NNSA facilities/sites to include studies involving hazardous biological agents
and/or toxins. The use and storage of these materials in DOE/NNSA facilities has the
potential to harm workers and the general public, as do toxic chemicals and radioactive
materials, through an unplanned event or condition that releases an agent or toxin to the
environment.
Section 4
Integration of hazardous biological materials into the emergency management program is
directed by 10 Code of Federal Regulations (CFR) 851, Worker Safety and Health
Program, Appendix A, 7. Biological safety. According to this rule, contractors must
establish and implement a biological safety program that establishes an Institutional
Biosafety Committee (IBC) or equivalent. The IBC must review the site’s security,
safeguards, and emergency management plans and procedures to ensure they adequately
consider work involving biological etiologic (i.e., disease causing) agents. In addition,
the biological safety program confirms that the site safeguards and security plans and
emergency management programs address biological etiologic agents, with particular
emphasis on biological Select Agents. Other Federal regulations that govern the use and
storage of Select Agents and Toxins (to be introduced in subsequent chapters) require
that mandated incident response planning be “integrated with any site-wide emergency
response plans.”
The purpose of this guidance is to assist DOE/NNSA field elements and operating
contractors in incorporating hazardous biological agents/toxins into emergency
management programs. The intended result is an integrated and comprehensive
emergency management program that provides assurances of a timely and effective
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response to an onsite release of a radioactive, toxic chemical, or hazardous biological
material. Note that the guidance presented in this document does not explicitly address
acts of terrorism in which biological agents or toxins, not owned or controlled by
DOE/NNSA, are brought onto a DOE/NNSA site or facility.
It is not the intent of this guide to establish operational biosafety requirements for
biosafety facilities. Topics [e.g., biological agents, Biosafety in Microbiological and
Biomedical Laboratories (BMBL) biosafety, BMBL risk assessment, barriers) will be
introduced to familiarize emergency management personnel with various concepts related
to hazardous biological materials that they must be cognizant of in order to address
integration of hazardous biological materials with site-wide emergency management
planning. Likewise, the discussions can also raise the awareness of biosafety experts to
recognize aspects of their discipline that are important to emergency management
personnel. There has been no attempt to ensure completeness in addressing the various
topics in this section and in Chapters 2 and 3. These chapters should not be used to
develop, implement, or evaluate a biosafety program. They are focused simply on
introducing biosafety concepts relevant to emergency management programs.
1.2 General Approach
Each DOE facility/site or activity is required by DOE O 151.1C to have an Operational
Emergency Base Program, which provides the framework for response to serious events
or conditions that involve the health and safety of workers and the public, the
environment, and safeguards and security. Although DOE O 151.1C establishes several
DOE-unique requirements and a minimum set of generic requirements for the Base
Program, the framework for response results mainly from the implementation of the
requirements of DOE regulations, other DOE orders, and applicable non-DOE Federal,
Tribal, State, and local laws/regulations/ordinances. The specific requirements that
constitute the Operational Emergency Base Program are the emergency planning and
preparedness aspects of these Orders and laws/regulations/ordinances. Examples of
emergency response features addressed in other DOE Orders and laws/regulations/
ordinances include: medical support, worker evacuation plans, fire drills, worker
notification systems, hazardous material communication, contingency planning for oil
spills, environmental spill drills and exercises, and DOE security and safeguards
requirements. The objective of the Base Program is to achieve an effective integration
of emergency planning and preparedness requirements into an emergency management
program that provides capabilities for all-emergency response, through communication,
coordination, and an efficient and effective use of resources.
Section 5
Some facilities may also require the implementation of an Operational Emergency
Hazardous Material Program. In accordance with DOE O 151.1C, a facility that
produces, uses, or stores hazardous materials (i.e., radioactive, chemical, or biological
agents and toxins) in sufficient quantities (radioactive or chemical materials) or
representing specific biological agents/toxins, which pose a serious threat to workers, the
public, or the environment, must develop and maintain a quantitative Emergency
Planning Hazards Assessment (EPHA) and meet the more detailed emergency planning
requirements of a Hazardous Material Program. Requirements of DOE O 151.1C
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apply to DOE/NNSA facilities, as well as facilities not owned or managed by the DOE,
but built on DOE/NNSA land [see DOE O 151.1C, 4.a.(15), and DOE G 151.1-1A,
Chapter 4].
For purposes of DOE O 151.1C and this Guide, a biosafety facility can include a stand
alone building with a single research activity, a floor in a building, or simply a laboratory
consisting of a single room or several rooms on a floor in a building where storage is
maintained or work/research is performed involving biological etiologic agents or
hazardous biological toxins. A biosafety facility will have an assigned containment level
consistent with applicable guidelines provided in Biosafety in Microbiological and
Biomedical Laboratories (BMBL), U.S. Department of Health and Human Services
(HHS), Public Health Service (PHS), Centers for Disease Control and Prevention (CDC)
and National Institutes of Health (NIH), Fifth Edition, 2007. The primary focus in this
guidance is on biosafety facilities that store or support activities involving biological
select agents or toxins, although the approach can also be applied to other etiologic
agents and hazardous toxins.
Other activities in a building containing a biosafety facility may be utilizing or storing
radioactive or toxic chemical hazardous materials. The Hazardous Material Program for
the building/facility should represent an integration of planning, preparedness, and
response activities for all hazardous materials. For example, a single EPHA should be
produced for the facility covering analyses of all hazardous materials identified in the
Hazards Survey. Similarly, response tools [e.g., Emergency Action Levels (EALs); pre
planned protective actions] should cover releases of all types of hazardous materials.
Thus, although the guidance in this document in the Emergency Management Guide
(EMG) (DOE G 151.1-series) focuses on biological hazards, the facility/site planners will
ultimately integrate the biological aspects of the emergency management program
elements with those of other identified hazardous materials to produce a single facility
Hazardous Material Program.
Specific guidance for implementing a Hazardous Material Program at a DOE/NNSA
facility/site can be found in the EMG, DOE G 151.1-series, for facilities containing
radioactive materials and/or toxic chemicals. The purpose of DOE G 151.1-5 is to
address major aspects of an emergency management program that need to be modified to
include emergency response to a release of hazardous biological materials.
Section 6
The primary requirements specific to DOE/NNSA biosafety facilities using or storing
select agents or toxins are contained in the regulations from HHS and USDA regarding
certain hazardous biological agents and toxins and their possession and use in the United
States (U.S.), receipt from outside the U.S., and transfer within the U.S. of certain
hazardous biological agents and toxins. For purposes of this guidance, the CFR rules,
which address the HHS and USDA requirements, will be referred to collectively as the
Select Agent Rules. At a minimum, an entity registering under these requirements needs
to develop and implement an incident response plan. For DOE/NNSA sites, the biosafety
facility incident response plan needs to be coordinated and integrated with the
implemented site-wide emergency plan.
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The required contents of an incident response plan are described in brief statements
related to various emergency management issues (e.g., identity/quantity of material
released, notifications, lines of authority and communication, planning and coordination
with local emergency responders, and procedures to be followed by employees
performing rescue or medical duties). Emergency management personnel at sites with
planned or currently operating biosafety labs will recognize that a DOE/NNSA
emergency management program addresses many of the same issues in the Program
Elements defined in DOE O 151.1C and the other guidance documents in the
DOE G 151.1-series (the EMG). Although the major focus of the current DOE
emergency management Order and EMG is on radioactive and chemical hazardous
materials, requirements and guidance are generally valid for biosafety facilities through
modifications to account for the unique properties and issues related to biological
hazards. As will become evident in subsequent chapters of DOE G 151.1-5, emergency
management plans and programs already implemented on DOE/NNSA sites provide the
programmatic and response framework/structure and, in many instances, the specific
functions and activities (e.g., training program, offsite interfaces) that will support
implementation of all response requirements included in the Select Agent Rules.
Although many aspects of emergency management planning for biological agents can be
patterned after the traditional hazardous materials approach that considers radioactive
materials and toxic chemicals, problems may arise in the applicability and use of some
traditional concepts and methodologies/tools. The applicability of computer modeling to
biological release scenarios should be established for the source and conditions of release
represented in the specific scenarios. Conventional modeling techniques, such as
Gaussian plume models, may not be appropriate for planning calculations and
consequence assessments during response for the types, quantities, and release
mechanisms of biological agents/toxin of interest. For this reason, and for others to be
discussed later, the Order does not require that biological releases be OEs requiring
classification (i.e., Alert, Site Area Emergency, or General Emergency), as are traditional
hazardous material releases. Also, some non-traditional events involving biological
agents can result in releases (e.g., unobserved infected host or contamination) that may
not be recognized or detected by the facility staff when they occur. In such cases,
detection of the release may only happen when people present with infections at medical
treatment locations, onsite or offsite, in sufficient numbers to trigger recognition of an
OE.
Section 7
OE response measures (e.g., protective actions) focus on collocated workers, the public,
and the environment outside of the biosafety facility, while the biological worker safety
program response appropriate for the specific the facility will focus primarily on
protection of the laboratory workers and the environment inside the biosafety facility.
The traditional approach to protective action planning applied to biological releases has
the additional complication of infection control, which deals with vector or person-to
person transmittal of the agent, after initial infection of a receptor. Specific agent data
can assist in determining potential spread, dissemination, infectivity, and treatment or
prophylactic protocols that can influence the selection of appropriate protective actions.
As indicated above, complications influencing application of the traditional DOE
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hazardous materials approach to biological releases dictates that each agent be analyzed
and researched to examine variations in agent characteristics that may not be bounded by
a standard hazardous materials planning and response approach. Hence, emergency
management planners need to familiarize themselves with the specifics of each agent in
use in the biosafety facility to augment the standard planning and response template, as
necessary.
In contrast to the complications mentioned above, there are underlying concepts in the
DOE emergency management approach that strongly influence the basic methodology for
planning and response to any hazardous materials release. Hence, any discussion of an
approach to DOE emergency management for biosafety facilities should be prefaced with
a discussion of the three key concepts that strongly influence the methodology presented
in the DOE G 151.1-series. These essential, governing concepts are the following (Cf.
DOE G 151.1-1A, Chapter 1):
• Effective response is the “last line of defense” against adverse consequences.
Regardless of how sound fundamental safety programs and hazard controls may be,
events will occur that have adverse health effects on people and/or the environment.
This principle expresses the DOE position that if hazard controls should fail, the
facility/site should be prepared to take actions to limit or prevent adverse health and
safety impacts to workers and the public.
• Planning, preparedness, response, and recovery must be specific to and
“commensurate with the hazards.” DOE/NNSA is responsible for a large number of
different hazards that could threaten the health and safety of workers or the public if
released to the environment. Hazards are very different in the nature of their impacts
on people, their behavior in the environment and the distance at which adverse
impacts would be experienced. While the basic emergency management framework
is the same for all DOE/NNSA sites and facilities, specific planning and response
measures for each hazard are to be tailored to the hazard. This is especially important
when implementing Hazardous Materials Program requirements for biosafety
facilities that may contain small quantities of agents or toxins; the requirements may
result in a function or activity that is comparable to a Base Program scale component.
For requirements that are not in a Base Program, the tailoring may result in a near
minimal version of the Hazardous Materials Program function/activity. In any case, it
is extremely important to document the tailoring to hazards that resulted in the
implemented function or activity.
Section 8
• “Early recognition” is vital to timely, effective response. In many cases, warning
potentially affected workers and the public and directing them to take actions to
prevent or limit their exposure is the only way that mitigating the adverse health
impacts of hazardous material releases can be accomplished. Hence, early
recognition of a release event is essential if warnings are to be delivered in time to be
executed effectively.
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Note that these concepts are repeated and emphasized here because they have an
overarching influence on both the development and implementation of emergency
management programs for hazardous biological materials presented in DOE G 151.1-5.
The guidance contained here is aimed at both biosafety and emergency management
professionals responsible for implementing the Select Agent Rules and DOE O 151.1C.
To satisfy the needs of both disciplines, the general subject of biosafety is introduced in
Chapter 2. Biosafety concepts of containment and barriers, Biosafety Levels (BSLs), and
biosafety controls are introduced in the context of the Select Agent Rules and are taken
directly from the Centers for Disease Control (CDC)/National Institutes of Health (NIH)
publication, Biosafety in Microbiological and Biomedical Laboratories (BMBL). Note
that descriptions of facility operations or biosafety programs are provided to support
examples and concepts discussed in Chapter 2. However, these descriptions should not
be interpreted as necessarily representing actual DOE/NNSA biosafety facility operations
and programs.
According to 10 CFR 851 Appendix A, 7. Biological safety, DOE/NNSA biosafety
facilities are required to establish an IBC to review any work with biological etiologic
agents for compliance with appropriate CDC (i.e., BMBL), NIH, World Health
Organization (WHO), and other international, Federal, Tribal, State, and local guidelines
and the site security, safeguards, and emergency management plans and procedures.
Understanding the basic biosafety concepts contained in these guidelines is essential for
interpreting and implementing the guidance to be presented in this guidance document.
In addition, because of the impact that agent characteristics and diverse
transport/transmission mechanisms have on specific emergency management planning
issues (e.g., threshold quantities, measures of severity, protective actions), Chapter 3
provides a brief discussion of these issues to support the approach contained in
DOE O 151.1C and the DOE G 151.1-series. Agents and their relevant general
characteristics are discussed with special emphasis on potential transport/transmission
mechanisms. OEs related to the release of biological agents to the environment, the
characterization of biological release scenarios, and tools for their recognition are also
discussed.
Basic program elements of the DOE/NNSA emergency management system are
presented in Chapters 4 through 6. Chapter 4 addresses the technical planning basis for
the emergency management program, where the Hazards Survey is the first component of
the technical planning basis. The Hazards Survey identifies requirements of the Base
Program and the need for further analysis of hazardous biological materials in an EPHA.
As for all hazardous materials, the EPHA will provide the technical planning basis for
the emergency management Hazardous Material Program. This analysis and the
Hazardous Material Program, which are required for any DOE/NNSA facility subject to
the Select Agent Rule(s), address the actual or potential release of biological agents
outside of the secondary barriers of biocontainment. Results of the EPHA will form the
basis for the emergency management program that will be commensurate with the
biological hazards in the facility. Planning, preparedness, and response activities will
Section 9
DOE G 151.1-5 1-7 (and 1-8)
7-11-07
reflect the characteristics and release transport/transmission mechanisms of the potential
hazards.
Because a strictly quantitative analysis of Select Agents may not be an appropriate or
feasible planning technique for many biological sources found in DOE/NNSA facilities, a
structured qualitative analysis approach is presented for EPHAs, which can be used to
reveal release scenario parameters necessary for recognizing OEs and for developing
initial protective action strategies for protecting onsite workers and the offsite public.
Appendix A contains several notional OE release scenarios developed to provide
examples of the analysis approach.
Chapters 5 and 6, which contain guidance related to programmatic and response
elements, address selected issues that should be modified by the presence of hazardous
biological materials in the facilities. Some requirements of the Select Agent Rules and
their integration into existing program elements are also described. Other aspects of the
elements may be modified by the existence of Select Agents, but are not explicitly
addressed. DOE G 151.1-1A through DOE G 151.1-4 should be used for more general
issues (e.g., emergency public information, offsite interfaces) related to program
elements. Users should always be aware that the guidance may have to be adjusted
because the specific facility emergency management program is focused on hazardous
biological materials.
Biological Select Agents are emphasized in the guidance contained in DOE G 151.1-5;
biological toxins are essentially extremely toxic chemicals generally covered by guidance
contained DOE G 151.1-1A through DOE G 151.1-4. However, clarifications and
discussions in this Guide will specifically address the release of toxins when necessary
(e.g., classification not required for biological toxin releases). In addition, this current
version of DOE G 151.1-5 will focus on planning for human or overlap (i.e., able to
infect both humans and animals) Select Agents. Future guidance will include toxins and
agents that are solely animal and plant pathogens.
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2. HAZARDOUS BIOLOGICAL MATERIALS AND
BIOSAFETY
The purpose of this chapter is to provide a brief introduction to characteristics of
hazardous biological materials and biosafety concepts related to the safe use and storage
of these materials in approved facilities. An understanding of basic biosafety concepts
will facilitate the integration of biosafety requirements and DOE/NNSA facility/site
emergency management program elements. Although much of this chapter was taken
directly from the BMBL, its contents should not be used to develop, implement, or
evaluate biosafety programs for DOE/NNSA biosafety facilities. Original NIH, CDC,
and WHO reference materials should be accessed for a complete and in-depth
presentation of the guidance for interpretation or implementation of the various biosafety
concepts to be discussed in the following sections.
2.1 Hazardous Biological Agents and Toxins
Biological materials that may be associated with DOE/NNSA facilities fall into two
major categories: biological agents (i.e., microorganisms) and biological toxins.
Hazardous biological agents include naturally occurring or genetically modified
microorganisms (e.g., bacteria, viruses) that can cause disease and death in an exposed
and vulnerable population. Biological toxins are toxic chemicals that are biologically
produced and behave in the environment much like other toxic chemicals. However,
these toxins represent some of the most hazardous in the category of toxic chemicals. An
extremely small amount of either an infectious biological agent or a biological toxin can
cause disease, severe toxic reaction, or death.
Section 10
The following briefly describe types of hazardous biological materials may be handled,
cultivated, and/or stored in DOE/NNSA laboratories:
• Bacteria are typically single-celled microorganisms that lack chlorophyll and
reproduce by simple division (fission). Bacteria can grow in nature outside of a
human or animal host and in a liquid culture or on semi-solid media (e.g., agar) in a
laboratory environment. Pathogenic bacteria cause disease when they establish
themselves and reproduce in humans or animals. Some bacteria (e.g., Bacillus
anthracis) are able to form spores, which is an extremely stable condition that allows
them to survive in hostile environments. Most infections resulting from exposure to
bacterial agents can be effectively treated with antibiotics, provided treatment is
initiated early enough in the course of illness.
– Rickettsiae are true bacteria, but, like viruses, they require living cells for growth
outside of a laboratory environment. Many rickettsiae are localized to certain
geographic areas and are maintained in nature by a cycle involving an animal
reservoir and an arthropod vector (insects, arachnids, etc.) that infects humans.
• Viruses are ultramicroscopic, infectious agents consisting of nucleic acid and protein
that do not survive and reproduce in nature outside of a living human or animal host.
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Viruses use the cellular machinery of the living host to reproduce. However, viruses
can be maintained in artificial laboratory environments for extended periods of time.
The stability of various types of viruses in natural environments, outside of a host,
varies and, for laboratory purposes, may be artificially extended. Vaccination is a
suitable protective measure for some viruses, such as smallpox, as long as it is
successfully administered prior to exposure. In some cases, vaccinations can
decrease the severity of disease, even if administered after exposure. Antibiotics are
not effective against viruses and very few antiviral treatments are available.
• Toxins are poisonous, non-living chemicals produced during metabolism and growth
of living organisms. The source of toxins can be microorganisms, such as bacteria,
and some higher plant and animal species, including fungi, plants, spiders and fish.
Examples are botulinum toxin, from the anaerobic bacteria Clostridium botulinum;
ricin, from the castor bean plant; and tetrodotoxin from the puffer fish. Most
biological toxins are relatively stable in the environment. Medical treatments are
generally limited to supportive care. The time for onset of symptoms for biologically
produced toxins is typically on the order of minutes to hours. Fatalities may occur
hours to days from exposure.
2.2 Select Agent Regulations
Federal regulations establishing requirements for certain biological agents and toxins
regarding their possession and use in the U.S., receipt from outside the U.S., and transfer
within the U.S. are:
• 42 CFR 73, Select Agents and Toxins. Contains two lists of agents and toxins
regulated by HHS/CDC: 1) HHS Select Agents and Toxins; and 2) Overlap (posing
severe threats to both humans and animals) Select Agents and Toxins.
• 7 CFR 331, Possession, Use, and Transfer of Select Agents and Toxins. Contains a
list of Plant Protection and Quarantine Programs (PPQ) of the Animal and Plant
Health Inspection Service (APHIS), Select Agents and Toxins.
Section 11
• 9 CFR 121, Possession, Use, and Transfer of Select Agents and Toxins. Contain two
lists: 1) Veterinary Services Programs (VS) of the APHIS, Select Agents and Toxins;
and 2) Overlap Select Agents and Toxins.
HHS Select Agents and Toxins pose severe threats to humans alone, while overlap Select
Agents and Toxins pose severe threats to both humans and animals. Overlap Select
Agents and Toxins are subject to regulation by both CDC and APHIS; the lists are
identical in both regulations. PPQ Select Agents and Toxins have the potential to pose a
severe threat to plant health or to plant products. VS Select Agents and Toxins have the
potential to pose a severe threat to animal health or animal products. Note that the total
aggregate quantity of each toxin under the control of a “principal investigator, treating
physician or veterinarian, or commercial manufacturer or distributor” in a biosafety
facility must exceed quantities specified in their respective regulations to be subject to
rule requirements, while no quantity is specified for biological agents. In addition, Select
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Agents or Toxins may also be excluded from the regulations if they meet any of several
other criteria (e.g., non-viable Select Agents or nonfunctional Toxins). As indicated in
Chapter 1, the three rules will be referred to as the Select Agent Rules for purposes of
this guidance, unless there is a reason to cite the specific rule.
The entities regulated under the Select Agent Rules include Federal facilities/laboratories.
The rules establish requirements concerning registration, security risk assessments, safety
plans, security plans, incident response plans, training, transfers, record keeping,
inspections, and notifications. The external exportation and transportation of these
materials are not covered under this rule; the U.S. Department of Commerce (DOC) and
DOT regulate these activities.
A key element of the HHS/CDC regulations is the development and implementation of a
safety plan considering the following biosafety standards and Federal regulations:
• CDC/NIH publication, Biosafety in Microbiological and Biomedical Laboratories
(BMBL);
• OSHA regulations in 29 CFR 1910.1200, Hazard communication, and
29 CFR 1910.1450, Occupational exposure to hazardous chemicals in laboratories;
and
• NIH Guidelines for Research Involving Recombinant DNA Molecules (April 2002).
The APHIS regulation related to PPQ Select Agents/Toxins (plant pathogens) is not
specifically addressed in this version of DOE G 151.1-5.
2.3 Principles of Biosafety, Containment, and Barriers1
Biosafety is the discipline addressing the safe handling and containment of infectious
microorganisms and hazardous biological materials. The two basic principles of
biosafety are containment and risk assessment, as defined below:
• The fundamentals of containment include the microbiological practices, safety
equipment, and facility safeguards that protect laboratory workers, the environment,
and the public from exposure to infectious microorganisms that are handled and
stored in the laboratory.
• Risk assessment is the process that enables the appropriate selection of
microbiological practices, safety equipment, and facility safeguards that can prevent
laboratory-associated infections (LAI).
Risk assessment is the BMBL biosafety methodology used to select the appropriate
microbiological practices, safety equipment, and facility safeguards that define the level
Section 12
1 Unless otherwise indicated, biosafety, containment, and barrier concepts/definitions are derived directly from
BMBL (1999) and/or BMBL (2007). However, since the discussion of these topics is not complete, the original
source document(s) should be accessed for developing and implementing a biosafety program.
2-4 DOE G 151.1-5
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of containment to be implemented in a facility/laboratory, commensurate with the
hazards associated with the biological agent(s) used or maintained within. The risk
assessment process is similar in purpose to the EPHA process, which results in the
emergency management technical planning basis for commensurate-with-hazards
Hazardous Materials Programs at DOE/NNSA facilities/sites.
The principles of biosafety and the associated risk assessment process are described in
the BMBL. All facilities registered under 42 CFR 73 or 9 CFR 121 are required by the
regulation to consider the BMBL in developing their safety programs. The BMBL
describes a comprehensive approach that evaluates hazards of the biological agents
present in the facility, the type of work to be performed, and the mitigative features
utilized (e.g., vaccines, training, medical surveillance). The application of this risk
assessment process results in a determination of the appropriate biosafety level (BSL) for
each infectious biological agent/toxin to be used or stored in the facility. The information
developed for the risk assessment process (e.g., Agent Summary Statements) will provide
much of the information needed as input to the EPHA process for the biosafety facility.
Facilities/laboratories, equipment, and procedures appropriate for work with toxins of
biological origin should also reflect the intrinsic level of hazard posed by a particular
toxin as well as potential risks inherent in the operations performed. If both toxins and
infectious agents are used, then both need to be considered when containment equipment
is selected and when policies and procedures are written. If animals are used, animal
safety practices must also be considered.
A basic understanding of containment and barriers is essential for developing an
integrated emergency management program that addresses all hazards. The term
containment (or equivalently, biocontainment) is used in describing safe methods for
managing infectious materials in the laboratory environment where they are being
handled or maintained. The purpose of containment is to reduce or eliminate exposure of
laboratory workers, other persons, and the outside environment to potentially hazardous
agents. The use of vaccines may provide an increased level of personal protection.
The BMBL defines three elements of containment:
• Laboratory Practice and Technique. The most important element of containment is
strict adherence to standard microbiological practices and techniques. Persons
working with infectious agents or potentially infectious materials should be aware of
potential hazards and must be trained and proficient in the practices and techniques
required for handling such material safely. The BMBL recommends that each
laboratory develop or adopt a biosafety or operations manual that identifies the
hazards that will or may be encountered and that specifies practices and procedures
designed to minimize or eliminate exposures to these hazards. Personnel are advised
of special hazards and are required to read and follow the required practices and
procedures.
Section 13
When standard laboratory practices are not sufficient to control the hazards associated
with a particular agent or laboratory procedure, additional measures may be needed.
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The laboratory director is responsible for selecting additional safety practices, which
must be commensurate with the hazards associated with the agent or procedure.
Strict adherence to standard microbiological practices and techniques (including
additional measures) by laboratory personnel is supplemented by appropriate facility
design and engineering features, safety equipment, and management practices.
• Safety Equipment (Primary Barriers and Personal Protective Equipment). Safety
equipment includes Biological Safety Cabinets (BSCs), enclosed containers, and
other engineering controls designed to eliminate or minimize potential exposures to
hazardous biological materials. The BSC is the principal device used to provide
containment of infectious splashes or aerosols generated by many microbiological
procedures. Three types of BSCs (Class I, II, III) are used in microbiological
laboratories: open-fronted Class I and Class II BSCs, which are primary barriers that
offer significant levels of protection to laboratory personnel and to the environment
when used with good microbiological techniques, and gas-tight the Class III BSC,
which provides the highest attainable level of protection to personnel and the
environment. [Schematics of these BSCs can be found in Appendix A of BMBL
(2007)]. An example of another primary barrier is the safety centrifuge cup, an
enclosed container designed to prevent aerosols from being released during
centrifugation. To minimize aerosol hazards, containment controls, such as BSCs or
centrifuge cups, are recommended when handling infectious agents.
Safety equipment may also include items for personal protection, such as gloves,
coats, gowns, shoe covers, boots, respirators, face shields, safety glasses, or goggles.
Such Personal Protective Equipment (PPE) is often used in combination with BSCs
and other devices that contain the agents, animals, or materials being handled. In
some situations in which it is impractical to work in BSCs, PPE may form the
primary barrier between personnel and the infectious materials.
• Facility Design and Construction (Secondary Barriers). The design and construction
of the biosafety facility (also referred to in the BMBL as facility safeguards)
contributes to laboratory worker protection, provides a barrier to protect persons
outside the laboratory and protects persons or animals in the community from
infectious agents that may be accidentally released from the laboratory.
The recommended secondary barrier(s) will depend on the risk of transmission of
specific agents. For example, when the exposure risks for most laboratory work in a
biosafety facility will be direct contact with the agents, or inadvertent contact
exposures through contaminated work environments, then secondary barriers in these
laboratories may include separation of the laboratory work area from public access,
availability of a decontamination facility (e.g., autoclave), and hand washing
facilities.
When the risk of infection by exposure to an infectious aerosol is present, higher
levels of primary containment and multiple secondary barriers may become
necessary to prevent infectious agents from escaping into the environment. Such
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Section 14
design features include specialized ventilation systems to ensure directional air flow,
air treatment systems to decontaminate or remove agents from exhaust air, controlled
access zones, airlocks as laboratory entrances, or separate buildings or modules to
isolate the laboratory.
Containment includes microbiological practices, safety equipment, and facility
safeguards that protect laboratory workers, the environment, and the public. Two tiers/
layers of protection provided by containment are defined as follows:2
• Primary containment – focused on the protection of biosafety facility/laboratory
workers and the immediate laboratory environment from exposure to infectious
agents and provided by both good microbiological techniques and the use of
appropriate safety equipment.
• Secondary containment – focused on the protection of the environment external to
the laboratory from exposure to infectious materials and provided by a combination
of facility design and construction practices.
Process of biological risk assessment will determine the appropriate levels of primary
and secondary containment for each infectious biological agent to be used or stored in
the facility. As will be discussed in subsequent chapters, these tiers/layers of
containment play a key role in defining HHS/CDC notification criteria and DOE/NNSA
Operational Emergencies.
2.4 Risk Assessment and Biosafety Levels3
Risk assessment is a process used to identify the hazardous characteristics of a known
infectious or potentially infectious agent or material, the activities that can result in a
person’s exposure to an agent, the likelihood that such exposure will cause a LAI, and the
probable consequences of such an infection. The information identified by a risk
assessment will provide a guide for the selection of appropriate BSLs and associated
microbiological practices, safety equipment, and facility safeguards that can prevent
LAIs; the information will also provide much of the basic data required for performing an
emergency management hazards assessment. Biological risk assessment is an important
responsibility of directors and principal investigators in DOE/NNSA biosafety facilities.
IBCs and other biological safety professionals should also share in this responsibility.
The primary factors to consider in risk assessment and the selection of biosafety
precautions fall into two broad categories: agent hazards and laboratory procedure
hazards. In addition, the capability of the laboratory staff to control the hazards must also
be considered. This capability will depend on the training, technical proficiency, and
2 The term tier/layer of containment is defined for this Guide; the definitions provided are a modification of those
found in BMBL (1999).
3 Unless otherwise indicated, risk assessment concepts/process definitions and the biosafety level methodology are
derived directly from BMBL (1999) and/or BMBL (2007). However, since the discussion of these topics is not
complete, the original source document(s) should be accessed for developing and implementing a biosafety
program.
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good habits of all members of the laboratory, and the operational integrity of containment
equipment and facility safeguards.
Section 15
• Agent hazards. The principal hazardous characteristics of an agent are its capability
to infect and cause disease in a susceptible human or animal host, its virulence as
measured by the severity of disease, and the availability of preventive measures and
effective treatments for the disease. Other hazardous characteristics of an agent
include probable routes of transmission of laboratory infection, infective dose,
stability in the environment, host range, and its endemic nature. The origin of the
agent is also important in risk assessment. Non-indigenous agents are of special
concern because of their potential to introduce risk of transmission, or spread of
human and animal or infectious diseases, from foreign countries into the United
States.
For genetically-modified agent hazards, it is particularly important to address the
possibility that the genetic modification could increase an agent’s pathogenicity or
affect its susceptibility to antibiotics or other effective treatments. Workers who
handle or manipulate human or animal cells and tissues are at risk for possible
exposure to potentially infectious latent and adventitious agents that may be present
in those cells and tissues. In addition, human and animal cell lines that are not well
characterized or are obtained from secondary sources may introduce an infectious
hazard to the laboratory.
• Laboratory procedure hazards. Investigations of LAIs have identified five
principal routes of laboratory transmission. These are parenteral inoculations with
syringe needles or other contaminated sharps, spills and splashes onto skin and
mucous membranes, ingestion through mouth pipetting, animal bites and scratches,
and inhalation exposures to infectious aerosols.
Aerosols are a serious hazard because they are ubiquitous in laboratory procedures,
are usually undetected, and are extremely pervasive, placing the laboratory worker
carrying out the procedure and other persons in the laboratory at risk of infection.
There is general agreement among biosafety professionals, laboratory directors and
principal investigators who have investigated LAIs that an aerosol generated by
procedures and operations is the probable source of many LAIs, particularly in cases
involving workers whose only known risk factor was that they worked with an agent
or in an area where that work was done.
• Capability of the laboratory staff to control the hazard. Laboratory workers must
be well aware of hazardous characteristics of laboratory procedures which may be
associated with the agents. Workers are the first line of defense for protecting
themselves, others in the laboratory, and the public from exposure to hazardous
agents. Protection depends on the conscientious and proficient use of good
microbiological practices and the correct use of safety equipment. Training,
experience, knowledge of the agent and the procedure hazards, good habits, caution,
attentiveness, and concern for the health of coworkers are prerequisites for a
laboratory staff in order to reduce the inherent risks that attend work with hazardous
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agents. Not all workers who join a laboratory staff will have these prerequisite traits,
even though they may possess excellent scientific credentials. Laboratory directors or
principal investigators should train and retrain new staff to the point where aseptic
techniques and safety precautions become second nature.
Section 16
The capability of the laboratory staff to control the hazards also depends on the
operational integrity of containment equipment and facility safeguards. An active
surveillance program, which monitors the status of containment equipment and facility
safeguards and ensures that periodic inspections, operational checks, calibration,
preventive maintenance and tests are carried out as required, can provide assurances that
equipment and safeguards will perform as expected. Routine surveillance programs are
discussed in more detail in Section 2.5.
Biological risk assessment is a subjective process requiring consideration of many
hazardous characteristics of agents and procedures, with judgments based often on
incomplete information. Although there is no standard approach for conducting a
biological risk assessment, the five-step approach presented in BMBL (2007) gives some
structure to the risk assessment process.
Using the results of the risk assessment, the primary risk criteria used to define the four
ascending levels of containment, referred to as biosafety levels 1 (BSL-1) through 4
(BSL-4), are: infectivity, severity of disease, transmissibility, and the nature of the work
being conducted. Another important risk factor for agents that cause moderate to severe
disease is the origin of the agent, whether indigenous or exotic.
BSL-1 is the basic level of protection and is appropriate for agents that are not known to
cause disease in normal, healthy humans. BSL-2 is appropriate for handling moderate-
risk agents that cause human disease of varying severity by ingestion or through
percutaneous or mucous membrane exposure. BSL-3 is appropriate for agents with a
known potential for aerosol transmission, for agents that may cause serious and
potentially lethal infections and that are indigenous or exotic in origin. Exotic agents that
pose a high individual risk of life threatening disease by infectious aerosols and for which
no treatment is available are restricted to high containment laboratories that meet BSL-4
standards.
Each level of biosafety containment describes the microbiological practices, safety
equipment, and facility safeguards for the corresponding level of risk associated with
handling a particular agent. Similarly associated with each biosafety level is a level of
primary and secondary containment commensurate with the agent risk.
The essential elements of the four biosafety levels for activities involving infectious
microorganisms and laboratory animals are summarized in Table 2-1. The levels are
designated in ascending order, by degree of protection provided to personnel, the
environment, and the community. Standard microbiological practices are common to all
laboratories. Special microbiological practices enhance worker safety, environmental
protection, and address the risk of handling agents requiring increasing levels of
containment.
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Table 2-1. Summary of Essential Elements of the Four BMBL Biosafety Levels (BSLs) for
Infectious Agents4
BSL Agents Practices
Primary Barriers and
Safety Equipment
Facilities
(Secondary barriers)
1 Not known to
consistently cause
diseases in healthy
adults
Standard Microbiological
Practices
None required Open bench and sink
required
2 • Agents associated
with human disease
• Routes of
transmission include
percutaneous injury,
ingestion, mucous
membrane exposure
• BSL-1 practice plus:
• Limited access
• Biohazard warning
signs
• “Sharps” precautions
• Biosafety manual
Section 17
defining any needed
waste decontamination
or medical
surveillance policies
Primary barriers:
• Class I or II BSCs or
other physical
containment devices
used for all
manipulations of
agents that cause
splashes or aerosols of
infectious materials
PPEs*:
• Laboratory coats,
gloves, face protection
as needed
BSL-1 plus:
• Autoclave
available
3 • Indigenous or exotic
agents with potential
for aerosol
transmission
• Disease may have
serious or lethal
consequences
BSL-2 practice plus:
• Controlled access
• Decontamination of
all waste
• Decontamination of
lab clothing before
laundering
• Baseline serum
Primary barriers:
• Class I or II BSCs or
other physical
containment devices
used for all open
manipulations of
agents
PPEs*:
• Protective lab clothing,
gloves, respiratory
protection as needed
BSL-2 plus:
• Physical
separation from
access corridors
• Self-closing,
double-door
access
• Exhaust air not
recirculated
• Negative airflow
into laboratory
4 • Dangerous/exotic
agents which pose
high risk of life-
threatening disease
• Aerosol-transmitted
lab infections; or
related agents with
unknown risk of
transmission
BSL-3 practices plus:
• Clothing change
before entering
• Shower on exit
• All material
decontaminated on
exit from facility
Primary barriers:
• All procedures
conducted in Class III
BSCs or Class I or II
BSCs in combination
with full-body, air-
supplied, positive
pressure personnel suit
BSL-3 plus:
• Separate building
or isolated zone
• Dedicated supply
and exhaust,
vacuum, and
decontamination
systems
• Other
requirements
outlined in BMBL
* PPE – Personal Protective Equipment
Note that the risk assessment process for assigning agents to BSL facilities may not be
entirely appropriate for prioritizing or judging risk for emergency management purposes.
Emergency management should characterize hazardous materials in terms of their
4 Table from BMBL (2007)
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inherent risk given a release to the environment, and should not be based on a risk
assessment that is modified by factors that are primarily focused on worker safety. Thus,
BMBL methodology results, although generally appropriate for emergency management
purposes, may be inappropriate for characterizing risks once an agent has entered the
environment.
2.5 Routine Surveillance of Biosafety Controls
The routine surveillance of biosafety protocols and practices, safety equipment, and
facility systems can provide assurances that required maintenance, equipment tests,
certifications, inspections, reviews, and other activities intended to maintain laboratory
control measures at a high level of performance are accomplished as required. In
addition, a rigorous and structured approach to these surveillance activities provides the
opportunity for recognizing abnormal events or conditions that, in combination with other
events or conditions, might indicate the potential for the unobserved release of a
hazardous biological material from the biocontainment area. For example, discovery of
an abnormal condition associated with a primary barrier during a routine inspection or
test could initiate further investigation of other barriers that, if failed during the same
time frame, might indicate the potential for a release to the environment.
Section 18
The essential elements of the four biosafety levels for activities involving infectious
microorganisms are summarized in Table 1 of the previous section. In addition to these
elements, Chapter IV of the BMBL (2007) also lists various routine monitoring, testing,
certification, and verification activities associated with each biosafety level. Examples
of routine surveillance appropriate for monitoring biological facilities can include
operational, equipment & facility, and medical surveillance. Training and skill level for
at-risk personnel can also be monitored to provide assurances that a high level of
performance is maintained.
Selected examples of routine surveillance activities taken from the BMBL (2007) are
presented below:5
• Operational Surveillance is conducted to ensure that procedures and protocols are in
place and effective. Examples include:
– Along with limited applications of pesticides, pest control is achieved through
implementation of an Integrated Pest Management (IPM) program consisting
of proactive operational and administrative intervention strategies to correct
conditions that foster pest problems. Monitoring is the central activity of an IPM
program and is used to minimize pesticide use. Traps, visual inspections, and staff
interviews identify areas and conditions that may foster pest activity. Records of
structural deficiencies and housekeeping conditions should be maintained to track
problems and determine if corrective actions have been completed in a timely
manner and were effective. Quality assurance and program review should be
performed to provide an objective, ongoing evaluation of IPM activities and
5 These examples should not be interpreted as requirements for DOE/NNSA biosafety facilities. They are intended
to represent selected examples taken from BMBL (2007) for illustrative purposes only.
DOE G 151.1-5 2-11
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effectiveness to ensure that the program does, in fact, control pests and meet the
specific needs of the facility program(s) and its occupants.
– Laboratory personnel must receive specific training in handling pathogenic and
potentially lethal agents and must be supervised by scientists competent in
handling infectious agents and associated procedures.
• Equipment & Facility Surveillance can help ensure that safety-related equipment and
facility systems are operating within appropriate parameters. Examples include:
− Laboratory personnel must be able to verify directional air flow. A visual
monitoring device, which confirms directional air flow, must be provided at the
laboratory entry. Audible alarms should be considered to notify personnel of air
flow disruption.
− High-Efficiency Particulate Air (HEPA)-filtered exhaust air from a Class II BSC
can be safely re-circulated into the laboratory environment if the cabinet is tested
and certified at least annually and operated according to manufacturer’s
recommendations.
− Provisions to assure proper safety cabinet performance and air system operation
must be verified. BSCs should be certified at least annually to assure correct
performance.
− Equipment that may produce infectious aerosols must be contained in devices that
exhaust air through HEPA filtration or other equivalent technology before being
discharged into the laboratory. These HEPA filters should be tested and/or
replaced at least annually.
Section 19
− HEPA filter housings should have gas-tight isolation dampers; decontamination
ports; and/or bag-in/bag-out (with appropriate decontamination procedures)
capability. The HEPA filter housing should be certified at least annually.
− The BSL-3 facility design, operational parameters, and procedures must be
verified and documented prior to operation. Facilities must be re-verified and
documented at least annually.
• Medical Surveillance helps verify that personnel safeguards implemented for a
biosafety program produce the expected health outcomes. It may include serum
banking, monitoring of employee health status, and participating in post-exposure
management. This monitoring activity is similar to routine bioassays taken as part of
selected radiation protection programs. Similarly, medical surveillances are required
by various health and safety regulations for workers involved with hazardous
chemicals. A documented medical surveillance program should be implemented that
defines at-risk positions, specifies risks versus benefits of prophylactic immunization,
and distinguishes between required and recommended vaccines for specific
organisms. A practiced plan for rapid response to a post-exposure event should
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include the ability to rapidly track personnel location, potential exposure, movement,
and method for testing and prophylaxis.
Selected examples of medical surveillance activities from the BMBL (2007) are
presented below:
− Laboratory personnel must be provided medical surveillance and offered
appropriate immunizations for agents handled or potentially present in the
laboratory.
− Each institution must establish policies and procedures describing the collection
and storage of serum samples from at-risk personnel.
− Incidents that may result in exposure to infectious materials must be immediately
evaluated and treated according to procedures described in the laboratory
biosafety safety manual. All such incidents must be reported to the laboratory
supervisor. Medical evaluation, surveillance, and treatment should be provided
and appropriate records maintained.
A medical surveillance program with expanded post-exposure symptom recognition
and reporting linked to community response assets differs from a standard hazardous
materials approach. Employee education with agent-specific updates, rapid tracking,
screening, definitive laboratory testing, prophylaxis and treatment pharmaceuticals, as
well as appropriate access to diagnostic and supportive medical care are key elements
to an effective, community integrated medical surveillance program.
• Training and Skill Level Surveillance of at-risk positions such as laboratory
technicians/workers and maintenance, housekeeping, and animal care personnel can
help to ensure employee safety. This surveillance activity involves the establishment
of a regular, documented education/recertification process, which tracks personnel
functions and activities to ensure that training for their duties is appropriate and
current.
Selected examples of experience and skill level surveillance activities taken from the
BMBL (2007) are presented below:
− The laboratory supervisor must ensure that laboratory personnel receive
appropriate training regarding their duties, the necessary precautions to prevent
exposures, and exposure evaluation procedures. Personnel must receive annual
updates or additional training when procedural or policy changes occur.
Section 20
− The laboratory supervisor must ensure that laboratory personnel demonstrate
proficiency in standard and special microbiological practices before working with
BSL-3 agents.
These examples of general surveillance activities can be potential sources of recognition
factors to be utilized in developing an Emergency Action Level (EAL)-like tool that will
DOE G 151.1-5 2-13 (and 2-14)
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be part of the DOE emergency management program for biosafety facilities. For this
purpose, routine surveillance should include an active process that integrates and
interprets the data in the context of potential release scenarios, rather than simply as
individual datum to be monitored, compared to expected performance or requirements,
and recorded.
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3. OPERATIONAL EMERGENCIES INVOLVING THE
RELEASE OF HAZARDOUS BIOLOGICAL
MATERIALS
The purpose of this chapter is to introduce emergencies involving the release of
hazardous biological materials from a DOE/NNSA biosafety facility. The following
issues will be discussed:
• Hazardous biological materials covered under DOE O 151.1C
• Issues related to hazardous biological materials and emergency management
• Definition of the DOE Operational Emergency (OE) involving the release of
biological materials from a biosafety facility into the environment
• Transport mechanisms potentially involved in biological OEs
• Characterization of OE release scenarios involving biological agents
This chapter will focus primarily on biological agents, not toxins. Emergency planning
for the release of biological toxins to the environment is similar to that for the release of a
toxic chemical. Its extreme toxicity, however, places it in a special category for
regulation and, as defined in DOE O 151.1C, in the same OE category (i.e., events that do
not require classification) as hazardous biological agents.
3.1 DOE O 151.1C and Hazardous Biological Materials
The emergency management order, DOE O 151.1C, includes criteria for identifying
hazardous biological materials subject to its requirements. In addition, according to the
Order, each DOE/NNSA facility with specific biological agents or toxins that pose a
serious threat to workers, the public, or the environment, must develop and maintain a
“quantitative Emergency Planning Hazards Assessment (EPHA) and meet more detailed
emergency planning requirements.” At a minimum, these agents and toxins must include
“ . . . Federally regulated agents and toxins identified in lists published by the
Department of Health and Human Services (HHS) in 42 CFR 73 and the Department of
Agriculture (USDA) in 7 CFR 331 and 9 CFR 121.” If any listed biological agents or
toxins are excluded from federal regulation under the Select Agent Rules
[e.g., 42 CFR 73.3(d)], then the exclusion also applies to the requirements of
DOE O 151.1C.
According to DOE O 151.1C, if a DOE/NNSA facility is governed by HHS and/or
USDA Select Agent Rules because it uses and/or stores Select Agents or Toxins, then an
EPHA needs to be prepared and an Operational Emergency Hazardous Material Program
is required for that facility. The scope and contents of an EPHA for hazardous biological
materials are described in Chapter 4 of this Guide. Subsequent chapters address the DOE
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Emergency Management Program Elements that constitute the Hazardous Material
Program.
Section 21
Although the requirements of the current version of DOE O 151.1C and this guidance
document focus on Select Agents and Toxins, other hazardous biological materials used
or stored at biosafety facilities may also have the potential to harm workers and the
general public. An emergency management program consistent with the current Order
and Guide can be developed and implemented that provides workers and the public with
an appropriate level of protection from non-Select Agents/Toxins.
3.2 Emergency Management Issues
Hazardous biological agents are similar to hazardous chemicals and radioactive materials
in that they:
• Are defined as hazardous materials in the Hazardous Waste Operations and
Emergency Response (HAZWOPER) standard (29 CFR 1910.120)
• They (most) can be dispersed into the air to pose a threat to workers and the public
via the inhalation pathway
• Have a range of responses to environmental conditions
The characteristics of hazardous biological agents differ from other hazardous materials
and these differences impact DOE emergency planning and response. Some unique
characteristics of hazardous biological agents are described below:
• Threshold Quantities. Since biological agents differ dramatically in terms of
characteristics that determine their ability to cause harm to humans, animals or plants,
firm de minimus hazard levels are difficult to discern. In addition, the characteristics
of available transport mechanisms for biological agents make the definition of a
general threshold screening value even more difficult, if not impossible.
Consequently, judging the perceived risk associated with the release of a specific
agent involves an assessment of the agent characteristics and activities conducted,
irrespective of the volume or concentration of agent involved.
The Select Agent Rules provide minimum quantities for each HHS and Overlap
hazardous biological toxin subject to the regulations. These quantities establish de
facto minimum hazard levels for the toxins that determine whether the toxin is subject
to the requirements. Similarly, minimum quantities should also represent screening
thresholds in the context of the DOE emergency management system.
• Infection Control Concepts. Agent characteristics related to the transfer of an agent
from one human to another and the capability of the agent to cause infection in a
human are important for emergency management planning for biological agents, but
are not applicable to other hazardous materials. Because definitions of these terms
vary, several were specifically selected for this guide:
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– Infectivity:
� Infection: detrimental colonization of a susceptible host by a disease-causing
microorganism (pathogen), where the infecting microorganism seeks to enter
and survive in a host and to utilize the host's resources in order to multiply at
the host’s expense.
� Infectious: the capability [of a disease-causing microorganism (pathogen)] of
entering, surviving and multiplying in a susceptible host.
� Infectivity: a relative measure of the capability with which a disease-causing
microorganism (pathogen) establishes an infection in a susceptible host.
– Virulence:
� Virulent: the capability [of a disease-causing microorganism (pathogen)] to
rapidly overcome the natural defenses of a host, causing a serious and
injurious condition(s).
� Virulence: a relative measure of the capability of a disease-causing
microorganism (pathogen) to rapidly overcome the natural defenses of a host,
causing a serious and injurious condition(s).
Section 22
– Transmissibility:
� Transmission: the passing/transmitting of a disease from an infected
individual or group to a previously uninfected individual or group. One or
more of the following mechanisms may transmit the disease-causing
microorganism (pathogen) from one person to another (person-to-person):
○ Droplet contact - coughing or sneezing on another person
○ Direct physical contact - touching an infected person
○ Indirect contact - usually by touching a contaminated surface
○ Airborne transmission - if the microorganism can remain in the air for
long periods
○ Fecal-oral transmission - usually from contaminated food or water sources
○ Vector-borne transmission - carried by insects or other animals
� Transmissible: the capability [of a disease-causing microorganism
(pathogen)] to be passed person-to-person. [Transmissible will also be used to
describe a disease that is transmitted person-to-person (i.e., transmissible
disease)]
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� Transmissibility: a relative measure of the capability with which a disease-
causing microorganism (pathogen) spreads person-to-person.
• Measure of Severity. The DOE emergency management system uses a Protective
Action Criterion (PAC) as a measure of severity for the airborne release of a
radioactive or chemical hazardous material. When the consequences of a release
exceed their respective PAC, adverse health effects are possible and protective
actions should be taken. (Cf. DOE G 151.1-2, Appendix F.)
Individuals vary widely in their susceptibility to a particular biological agent. For
example, the ID (Infectious Dose) for anthrax that results in disease in 10 percent of
the population, ID10, is hundreds of organisms. ID50 is tens of thousands and ID95 is
millions of organisms. Since the characteristics of IDs for many agents do not reflect
a delimiting value that can be used to represent infectious vs. not infectious doses or
permissible vs. not permissible exposure levels, a specific value of infectious dose
will not be used in DOE emergency management programs to measure release
severity (i.e., below a specific value, no protective actions required vs. above the
value, take actions.)
This position is supported in part by a study that asked whether “infectious doses for
organisms could be defined in such a way to potentially develop permissible exposure
levels to those infectious agents.” The study concluded that “. . . attempts to develop
quantitative values for human infectious dose are not currently feasible.” [OSHA
Infectious Dose White Paper, Applied Biosafety, Volume 8, Number 4 (2003), pp.
160-165.]
Because no measure of severity is currently available for use as a PAC for releases of
hazardous biological materials, DOE O 151.1C specifies that immediate protective
actions are required for any release of biological agents and toxins outside of
secondary containment barriers.
• Amplification. Biological agents (bacteria, viruses) are living organisms and have
the ability to grow and multiply – to amplify. The communicable nature of some
biological agents means that the amount may amplify and spread dramatically after it
is released to the environment. If a host is infected with a communicable agent, it
could be transmitted from host to host, growing and multiplying within each infected
subject.
This characteristic of living biological agents presents an additional unique, and
possibly unsolvable, challenge for emergency management planning and response in
attempting to define a quantity of biological material that represents a threat to
collocated workers and the public.
Section 23
• Stability in the Environment. The persistence of hazardous biological agents in the
environment can vary dramatically among different types of such organisms. Some
viruses may survive in the environment from minutes to hours, while some bacteria,
such as Bacillus anthracis, can transform into extremely stable dormant spore forms
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under adverse conditions that can survive for decades in the environment under
adverse conditions. Stability in the environment can influence specific initial
protective actions taken and the time duration for maintaining them.
• Incubation Period. The time between infection/uptake and the onset of symptoms
(i.e., incubation period), which can vary from hours to days, may in some cases
enable the facility staff to analyze the event and perform lab tests and monitoring to
confirm that a suspected (e.g., observed through recognition indicators) release has in
fact occurred. Once confirmation takes place, the incubation period can allow a
window of opportunity during which effective treatments can begin (prior to onset)
for individuals who may have been exposed.
However, the incubation period does not provide a similar opportunity to reduce or
eliminate further exposures. Unless appropriate initial protective actions are
promptly implemented (e.g., access control, decontamination, evacuations, etc.), the
source of biological material released during the event may continue to expose
workers or the public. This is particularly true for the infected host, since some
infections are most transmissible during the incubation time.
The incubation period is a mitigating (i.e., degrading) factor in the timely detection of
individuals who are unknowingly infected or who do not report an exposure or
incident. Variability in symptom onset also makes it difficult to establish the time of
the release when attempting to confirm that the release originated at the facility.
• Detection Difficulties. Releases of biological agents are difficult to detect directly
and to identify with certainty in real time. Various generic detection devices respond
to the presence of biological agents, but do not identify the specific agent. Unlike
radiation monitors and hazardous chemical detection devices, real-time equivalent
biological identification devices currently available may not be feasible for use in
DOE biosafety facilities. Consequently, laboratory testing is generally used to
confirm the presence of biological agents, although results can take up to several days
to obtain.
Reliable detection of the onset of an outbreak of infections, due to an unobserved
release of a biological agent from a DOE/NNSA facility, cannot be based solely on
the initial appearance of symptoms among site workers or in the local community. A
biological agent release could be due to a natural outbreak or epidemic. Also, early
symptoms may appear to be the same as many non-lethal diseases produced by
common infectious agents.
3.3 Biological Operational Emergencies
The Select Agent Rules require immediate notifications to CDC and/or APHIS upon
discovery of “. . . a release of an agent or toxin causing occupational exposure or release
of a select agent or toxin outside of the primary barriers of the biocontainment area....”
These criteria for notification of CDC and/or APHIS Headquarters are consistent with the
fundamental objective of an OE categorization, namely, to ensure prompt notifications to
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Section 24
initiate a timely, effective response. To maintain consistency with the Select Agent
Rules, the DOE Order and guidance incorporate, where applicable and appropriate,
concepts and requirements of the rules. The DOE OE definition will supplement this
general condition for notifications of biological events with the additional criterion that
any actual or potential release of a hazardous biological agent or toxin be “. . . outside of
the secondary barriers of the biocontainment area.” The infectious nature of Select
Agents and the lack of defined de minimus hazard levels support OE declarations under
conditions that leave undefined a specific level of consequences (and hence health
effects) or the quantity released into the environment.
The OE represents an actual or potential release beyond the secondary barriers of the
biocontainment area into the environment. The environment may be the public area
outside of a laboratory contained within a facility or may refer to releases directly outside
a facility/building. Multiple transport mechanisms can be associated with the OE.
Hazardous biological materials can be released to the outside environment or can
contaminate humans, vectors, and fomite (i.e., inanimate objects such as clothing or
equipment), and then be carried outside the facility. In the environment, they can persist
in water systems and on surfaces (including environmental matrices such as soil) and
again be transported by multiple mechanisms. Susceptible hosts that contact
contaminated air, water, or surfaces may be vectors for further transmission of infectious
biological agents.
3.4 Biological Agent/Toxin Transport Mechanisms
In general, airborne transport and dispersion of hazardous materials can have the greatest
area of impact and require the most time-urgent emergency response actions. This is
especially the case when source terms consist of large quantities of hazardous materials
and inhalation is the primary receptor pathway. For hazardous chemicals and radioactive
materials, the spread of significant amounts of contamination by animate or inanimate
objects is often easily detected and the initial area of contamination caused by airborne
dispersion predictable. Implementation or recommendation of applicable protective
measures to prevent or limit worker or public exposures is straightforward.
Significant quantities of living biological agents (microorganisms) can be transported as
aerosols and by additional transport mechanisms, including transmission from an infected
or contaminated host or object to one or many other receptors. Biological agents can
spread beyond their point of initial release in air-handling systems, by the re
aerosolization of contaminants (i.e., from floors and other surfaces as a result of foot
traffic or indoor air handling systems; through adhesion to people or their clothing; and
by transmission from one person to another.) The result could be widespread dispersal of
contaminants (e.g., within a building, into transportation and transit vehicles, into homes
or other sites.) Since no threshold or permissible quantities have been established for
biological agents, transport mechanisms not normally considered or applicable when
hazardous chemicals and radioactive materials are released should be evaluated for
biological agents.
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Section 25
Biological toxins are non-living chemical materials produced by living organisms. The
transport mechanism for toxins is basically the same as for particulate inorganic or
organic hazardous chemicals. However, because they represent extremely toxic materials
(poisons), release of even small quantities from the facility as an aerosol, either to be
inhaled directly by receptors or to be deposited as contamination, is of time-urgent
concern.
Three general categories of transport mechanisms that should be considered for
hazardous biological materials:
1. Environmental dispersion
2. Infected host (agents only)
3. Contamination
Transport of hazardous biological materials from a facility to external receptors in the
environment can involve combinations of several mechanisms. The specific paths
available will depend on facility design, geographic and demographic characteristics of
the surrounding area, and, especially, characteristics of the biological agent. The
following sections contain brief discussions of these transport mechanisms.
3.5 Environmental Dispersion
Two potential mechanisms for the transport and dispersal of biological agents/toxins in
the environment are airborne and waterborne. Although many can be dispersed into the
air and transported as aerosols, most do not readily aerosolize in their natural form. If the
agent/toxin has been processed to readily aerosolize (e.g., weaponized), then the airborne
dispersal of material could be the most likely mode of transport with the greatest impact.
The ability to aerosolize is an individual agent/toxin characteristic and may be modified
dramatically by the formulation of material containing the biological agent. This
enhanced ability to aerosolize should be specifically identified in analyzing potential
emergency scenarios. The ability of the agent/toxin to survive in the environment after
release should also be assessed in determining the impact of a release into the air. The
aerosolized agent or toxin can directly impact receptors through inhalation or other
pathways and/or by ingestion when receptors are exposed to contaminated food products.
Some biological agents/toxins also have the ability to remain viable in water and can pose
a serious hazard if released into wastewater or drinking water. The ability of a particular
agent/toxin to survive and remain a threat once it enters a water supply needs to be
considered.
3.6 Infected Host
A transport mechanism unique to biological agents is the exposure of receptors
(collocated workers or the public) to a biological agent by an infected host. The infected
host moves from the facility to the environment and in the environment to a receptor.
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The infected host transmits the agent through direct or indirect contact with receptors.
This method of transport applies only to a subset of hazardous biological agents referred
to as transmissible agents. These agents, such as the virus responsible for smallpox or the
bacteria that causes plague, can be transmitted from one individual or animal to another,
where it can establish an infection, multiply, and be passed on to other individuals or
animals. Other types of hazardous biological agents, such as the bacteria that cause
anthrax, are not transmitted directly from person to person. The transmissibility of
hazardous biological agents should be established for any agent handled in a facility in
order to understand the potential consequences of a release to the environment.
Section 26
Transmissible diseases present the greatest potential danger since they can result in
epidemics and pandemics. The Severe Acute Respiratory Syndrome (SARS) epidemic is
a recent example. This disease was initially detected in poultry and was then transmitted
to humans through close contact. The disease then proved to be highly contagious and
lethal in humans. If small rodents or insects enter a facility and become infected, they
can infect humans and non-humans. Infections can spread through droppings
(e.g., mouse droppings shed the Hanta Virus that becomes aerosolized in dry, windy
climates), biting (e.g., West Nile Virus mosquitoes biting infected animals and then biting
other animals and humans), and contamination of food sources outside the facility
(e.g., deer droppings in fields have contaminated vegetables with E. Coli.)
If a release of a hazardous biological agent to the environment occurs via an infected
host, such as a facility worker or a vector (e.g., insects or rodents), the event could go
undetected until symptoms are recognized in one or more individuals or animals as the
result of infection. Medical surveillance of facility workers, identification of a disease
outbreak by the local medical community, or diagnosis of diseased domesticated or wild
animals by veterinarians may provide this recognition.
• Human Host – Infection of a human host by a biological agent within a facility can
occur due to an accident, such as a needle stick, that penetrates PPE. Other
mechanisms that can create an infected host are also due to human errors, which
could occur where PPE is not used properly or safety precautions are not followed.
Once the human host is infected, the agent can grow within its host and infect
collocated workers and the public through aerosolization (sneezing, coughing), direct
physical contact, or through foods (e.g., preparation process, sharing food or utensils).
Humans are highly effective carriers of some transmissible agents and can be
effective sources of dissemination.
• Animal/Insect Hosts (Vectors) – Infected, live vectors (i.e., non-human carriers) can
spread vector-borne diseases. Arthropod or rodent vectors, for example, that enter
laboratory spaces may become infected and carry an infectious agent out of the
facility. The most common vectors are arthropod hosts such as mosquitoes, ticks or
fleas. Rodents are the most likely animal vectors (other than humans). Infected
laboratory animals that are the subjects of scientific investigations may transmit the
agent via direct contact, droppings, or being bitten by a vector.
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• Plant Host – As with human and animal diseases, infected plants can spread disease
to other plants. Plant bacterial, viral, fungal, and protozoan pathogens can spread
through direct contact, proximity, or carrier/vector. Plant epidemics can have severe
economic consequences.
3.7 Contamination
Biological agents and toxins can also be transported outside a biosafety facility through
contamination. The contamination mechanism for agents is only possible if the agent can
also survive in the environment for a time sufficient to allow a receptor to become
infected. Workers in a biosafety facility may come into physical contact with a
biological agent and carry it outside the facility on their skin or clothing, where it may be
deposited or transferred to suitable hosts and/or receptors. If an infectious biological
agent contaminates a surface (e.g., skin, hair, clothing, objects) within the facility that is
potentially transportable to the outside, then contamination should be considered as a
transport mechanism. It is possible for an insect or rodent to make contact with a
biological agent and carry it outside the facility. Alternatively, insects or rodents could
be exposed to the agent outside the facility from another source. Objects (i.e., fomite)
within a facility may become contaminated with a biological agent and transport the
agent to receptors outside the facility.
Section 27
3.8 Biological Agent Release Scenarios
Analyses of OE releases of biological agents from a biosafety facility will involve an
understanding of the characteristics of the agent, its formulation and use (activities) in the
laboratory, barriers and failure modes, potential initiators of releases, mechanisms for
transport from the facility and in the environment, the external environment, how the
agent interacts with potential receptors, and the medical indicators of infection. In the
context of OE releases of biological agents, the “environment” might be the public area
within the facility, but outside the biocontainment area, where the specific biosafety
protocols associated with the agent/toxin are not required.
In order to facilitate analyses, a simplified schematic representation of scenario
development is given in Figure 3-1. The scenario sequence is divided into six groups of
parameters or components to be addressed:
1. Source
2. Failure(s)
3. Transport outside biocontainment area to the environment
4. Transport in the environment to the receptor
5. Agent-Receptor interactions
6. Effects on the receptor
The schematic shown in Figure 3-1 represents the sequence of agent-activity-facility
characteristics that may contribute to a particular biological release scenario. The agent
needs to be specified in order to determine which characteristics play a role in each step
in the scenario. As should be apparent, the figure is not to be interpreted as a description
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of the parameters and considerations that enter into the analysis of every biological agent
release scenario. The agent-activity-facility and scenario to be analyzed will dictate the
characteristics that will enter into the analysis (e.g., barriers, transport mechanisms,
pathways, diagnosis indicators.)
Each potential release scenario has six basic components:
• Source. The source term for each scenario will depend on the specific agent, its
form/formulation (e.g., aerosolized) and quantity (and concentration), and, if
applicable, the specific activity involving the agent that results in a release. Other
source terms may apply to scenarios involving initiators such as natural phenomena
or external events. The procedures and protocols associated with use of the agent and
its containment status (e.g., in Class II BSC, PPE required, ventilation design) will
provide the characterization of the hazard required for analysis.
The maximum planned quantity of material to be used by the scientists/technicians
will determine the upper limits for emergency management analysis and the potential
release quantity to assume for planning purposes, especially related to environmental
dispersion and contamination transport mechanisms. Although the quantity in use
will certainly influence the chance for an exposure to occur, it will have little effect
on pre-planning for releases via an infected host transport mechanism, given that an
exposure has occurred.
• Failure(s). In DOE emergency management analyses of hazardous material
releases, barriers are physical or administrative features that maintain each material
in a safe condition. The primary barrier is generally the one physically nearest to
the material to be controlled. In contrast, the BMBL methodology for addressing
biological containment uses the term primary barrier more generally. Primary
barriers are intended to protect personnel and the immediate laboratory
environment from exposure to infectious biological agents. The biocontainment
area may consist of multiple primary barriers, with some barriers having dual roles
in preventing exposures both within the area and outside in the environment
(secondary barriers).
Section 28
A postulated release of biological material will usually involve failure of one of
the primary barriers (to be referred to as the initial barrier in this guidance), while
additional primary and secondary barriers are intended to protect the personnel
and the immediate laboratory and to prevent release of material outside the
laboratory. Biocontainment barriers intended to prevent releases of material are
generally consistent with emergency management terminology for barriers.
Significant exceptions are the PPE and similar worker safety barriers that have a
role as a barrier to a biological release only for the infected host transport
mechanism.
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Figure 3-1. Schematic Representation of Biological Release Scenario
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Potential failures associated with the barriers and additional mitigating factors can
represent variations in the quantities of released material and expected transport
mechanisms associated with the specific biological source term. Table 3-1 contains
representative examples of generic types of barriers/controls and the primary agent
transport mechanism they may effectively prevent. Many of these will become the
barriers/controls and release conditions or mitigating factors involved in the
scenarios.
Table 3-1. Transport Mechanisms and Barriers/Controls
Barriers
Transport Mechanisms to the Environment
Environmental Dispersion Infected Host Contamination
Access control X X
Precautionary Safety Reminders X X X
Decontamination X
Medical Surveillance X
Physical Containment X X
PPE X
Physical Separation(s) X X X
Portal Design X X
Air Handling Design X X
As indicated in Figure 3-1 under Failure(s), a potential release of biological
materials will depend on the initiator causing the failure of the initial barrier
(i.e., closest to the material), failures in additional barriers or controls, and potential
mitigating release conditions. Further detailed discussions associated with failure
analysis and release scenarios are contained in DOE G 151.1-2 Chapter 2, Hazards
Assessments, and will be discussed later in this Guide, Section 4.2.
• Transport Outside Containment to the Environment. In this step, the initiator(s)
is specified for each failure mode, the source term is estimated, and specific
transport mechanisms that apply to each initiator are identified. The agent release
scenario should specify how the agent is transported into the environment from the
facility. Each agent transport scenario will provide an individual set of parameters
that will contribute to the analysis of the scenario.
• Transport in the Environment to the Receptor. Initial transport of an agent out
of the biocontainment area may continue through a variety of mechanisms. For
example, an environmental dispersion of an agent out of the biocontainment area
can result in a host becoming infected outside or the contamination of a vector that
continues to spread the agent in the environment. Thus, a release that may begin as
a single transport mechanism can eventually involve several candidate paths to a
receptor. This is indicated schematically in Figure 3-1.
• Agent-Receptor Interaction. The effects of agent-receptor interactions depend on
agent characteristics (e.g., transmissibility, route of transmission, infectivity,
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virulence), exposure level (i.e., dose), and available receptor pathways and receptor
susceptibility. These parameters may not directly impact the analysis of the
scenario, but can certainly influence the selection of initial pre-planned protective
actions.
Section 29
• Effects on Receptor. The final scenario characterization step reflects potential
effects of the agent and its associated disease on the receptor. The resulting
infection caused by a specific agent could be recognized through consideration of
the characteristics shown in the figure. Hence, scenarios may reflect releases that
went unobserved at the facility, which should now be recognized by onsite worker
medical surveillance or at offsite disease surveillance centers.
The brief introduction of the release scenario in this section will be continued in this
Guide, Section 4.2. Scenarios form the basis for planning and response to OEs
involving biological agents. The purpose of the EPHA is to analyze a spectrum of
these scenarios to enable the facility to recognize that an agent has been or might have
been released and to respond appropriately. The recognition of OEs is introduced
briefly in the next section.
3.9 Recognizing Operational Emergencies
For emergency response measures to be effective, early recognition of an actual or
potential release of a hazardous biological material is essential. Transition to
emergency operations depends on detection and recognition of specific emergency
event or condition indicators/symptoms that suggest an actual or potential release
outside of secondary barriers. At any given time, different indicators and symptoms
may be monitored to determine if facility conditions are normal or if any abnormal
event/ condition may have occurred. Monitoring of these indicators and the recognition
of the significance of abnormalities is generally a routine function of the biosafety
facility staff.
Routine surveillance (cf. Section 2.5) should include an “active” process that
integrates and interprets the data in the context of potential releases, rather than
simply as individual datum to be monitored, compared to expected performance, and
recorded. Methods employed to implement detection and recognition of emergency
events/ conditions and to make the transition to emergency response should be
integrated with routine operational practices to the greatest extent possible. Staff
responsible for this routine surveillance should be specifically trained to perform this
recognition function.
To implement an “active” recognition activity/function, an emergency management
program at a laboratory facility should take advantage of control capabilities that are
already an integral part of good microbiological practices and the biosafety program in
the facility. Biosafety control measures, such as routine surveillance activities, are
features of laboratory operations that could support development of recognition factors
for an emergency management program. Requirements and criteria for establishing a
specific biosafety level and for implementing a risk assessment methodology represent
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a variety of measures intended to control the biological agents or toxins contained
within the laboratory. They range from laboratory practices and equipment reflecting
direct control to routine surveillance activities monitoring and maintaining expected
performance of the biosafety systems and at-risk personnel involved in the work.
These biosafety control measures are barriers to the release of hazardous biological
material, and, hence, failure of one or more of these controls could result in a release of
an agent or toxin outside the laboratory via one of the transport mechanisms.
Section 30
Any site working with hazardous biological agents should have an effective agent
identification capability either in-house or available on an as-needed basis from an
external source. Note, however, that it is not the intent of this section to support the
purchase of new equipment or capabilities, if the current situation adequately supports
the needs of emergency response commensurate with the hazards. Various technical
methods are available for detecting and identifying the presence of hazardous biological
materials. The surest method (the “gold standard”) is laboratory analysis, which takes
hours to days, and is most appropriate as a confirmatory test and not a real-time
detection method. Other methods vary from real-time generic (i.e., lacking specificity)
detection to various field and laboratory devices and methods that can identify the
presence of an agent in minutes to hours. Some commercial detection and
identification systems are available and a number of others are being developed.
Simple antibody-based methods yield results in less than 15 minutes and are suitable
for routine monitoring of specific agents being used in a particular laboratory, but, in
general, they are limited in terms of throughput and scope of agents detected.
Antibody-based methods may also lack specificity and sensitivity. More complex
nucleic acid-based systems are sensitive and specific. However, the time to detect
ranges from about 20 minutes to several hours, and they are costly to operate and
maintain. In addition, nucleic acid-based systems are limited in terms of throughput
scope of agents detected. Since the agents/toxins to be used or stored in a biosafety
facility will usually be known, it may be possible to identify the specific detection
methods needed and to include these in emergency planning.
Note that the scenario components that may provide recognition factors are indicated in
Figure 3-1 associated with two separate groups of scenario components, those that may
be directly observable at the facility and those that are associated with manifestations of
the infection caused by the disease. This implies that two categories of biological agent
releases should be considered in emergency management planning: observed and
unobserved releases. Recognition of observed releases will likely occur at the facility,
as the result of direct detection of the release through observations of event indicators
(e.g., initiating event, barrier failure). In this case, the agent will generally be known
and response measures can usually be initiated shortly after recognition of the event.
In contrast, unobserved releases (e.g., unreported infected host, contaminated vectors)
could remain undetected for a substantial period following the actual event at the
facility. Recognition of these events can occur as the result of indirect detection of the
release, when infected receptor(s) present symptoms of the disease. An active, ongoing
medical surveillance program within the DOE/NNSA community and in the local
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community can provide an essential detection capability for identifying a possible
release from the facility. As with observed releases, early recognition of an actual or
potential unobserved release of a biological agent is essential for emergency response
measures to be most effective.
3.10 Initial Protective Actions
Section 31
Planning and developing initial protective actions for biological agents and toxins
require a coordinated effort between DOE/NNSA site medical personnel and offsite
public health agencies. In the event of an OE at a biosafety facility, it is expected that
local and/or State public health agencies will assume responsibility for initiating long
term measures for protecting the local population, including onsite workers, while the
site will be responsible for initiating prompt, initial protective actions onsite and
recommending protective actions offsite. For an effective response, it is imperative that
site medical personnel coordinate protective action planning with the local/State public
health agency to ensure that initial measures taken by the site or recommendations
made to offsite response organizations are consistent with expectations of local/State
public health authorities, as different public health jurisdictions may have different
capabilities.
The specific initial protective actions to be taken will depend upon a number of factors
(indicated schematically in Figure 3-1), including:
• Transport mechanism of the release (i.e., airborne, infected host, contamination)
• Observed vs. unobserved release
• Characteristics of the biological agent released (e.g., transmissibility, infectivity,
stability in the environment)
• Location of populations in relation to the source of biological agents/toxins
• The time available to issue and take protective actions
Initial protective actions that can be taken in the event of a biological OE release are
general measures that can apply to many observed releases of hazardous agents/toxins.
These measures may include:
1. Access control: Control of personnel access to areas of potential exposure and/or
contamination outside the biocontainment area to prevent unnecessary exposures
and minimize the spread of contamination. Access control is most effective when
implemented immediately upon recognizing that an area has been, or will be,
affected by a hazardous material release.
2. Sheltering/Shelter-in-place: Directing people to seek shelter inside a building or
similar location and to remain inside until the threat of exposure at dangerous levels
passes. Shelter-in-place means directing people to stay inside at their current
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locations until the threat of dangerous exposure passes. Sheltering/shelter-in-place
is used when evacuating collocated workers and/or the public would cause greater
risk than staying where they are or when an evacuation cannot be performed.
Identification of areas for sheltering with potential isolation capacity should be
considered.
3. Evacuation: Moving all people from a threatened area to a safer place. To
perform an evacuation, there should be enough time for people to be warned, to
prepare, and to leave an area. Evacuees should be sent to a definite place, by a
specific route, far enough away from the incident site so they will not have to be
moved again if the wind shifts. Consideration should be given to development of a
default radius around the facility based on wind speed and a 1- to 2-hour time span
after the release, to define the area of immediate concern.
Section 32
4. Decontamination: Removal of hazardous material from personnel and equipment
to the extent necessary to prevent potential adverse health effects. Contaminated
clothing and equipment should be removed after use and stored in a controlled area
until cleanup procedures can be initiated. In some cases, protective clothing and
equipment cannot be decontaminated and needs to be disposed of in the proper
manner. Decontamination also applies to removal of hazardous materials that may
have been deposited on the ground and on other structures in the vicinity of the
release. Use of disinfectants on people or material is a form of decontamination.
5. Medical Surveillance: Immediate and active medical surveillance activities,
including a process to identify, screen, test, and assess people most likely to have
been exposed. Based on medical surveillance results, identify candidates for
continued monitoring and/or treatment.
6. Quarantine: Separation and restriction of movement of persons, who while not yet
ill, have been exposed to a transmissible biological agent and therefore may become
infectious. Since quarantine may sometimes require long periods of time pending
definitive laboratory results, considerations for support of personnel may include
food, water and diversionary activities.
Several longer term protective actions may also be initiated soon after a biological OE
release has been identified, such as:
7. Vector control: Management of vectors by reducing or eliminating their
populations and chances of disease transmission; or reducing or eliminating their
ability to cause harm. For most scenarios, vector control may be considered a long
term protective action.
8. Control/Disinfection of Contaminated Water Supplies: Shutting off
contaminated water supply and water supply intake points to prevent contaminated
water usage. This decision may be based on recommendations of appropriate health
or agricultural agencies. Water supplies may be restricted at the point of origin or
distribution, confiscated, stored, or destroyed. Destruction or neutralization
DOE G 151.1-5 3-17
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(disinfection) of disease-carrying microorganisms in contaminated water supplies
(lakes, reservoirs, tanks, ponds, etc.) may be conducted to restore them to use.
9. Control of Contaminated Food Products: The embargoing or destroying of
contaminated agricultural products is appropriate to control the physical movement
of food products both raw and processed in an affected area (animal, dairy, plant).
This decision may be based on recommendations of the appropriate health or
agricultural agencies.
10. Changes in Livestock and Agricultural Practices: Contamination of pastures
and agricultural areas due to deposition of released materials can require specific
protective actions to minimize introduction of contamination into the human food
chain. Actions could include putting livestock on stored feed, delaying slaughter of
animals until the hazardous material has been removed from their systems, and
treating soil to minimize uptake of the hazardous material into foodstuffs. Use of
severely contaminated land for agricultural purposes may have to be prohibited.
In the case of an unobserved release, the source may not be confirmed for sometime
after recognition (of disease outbreak) and initial protective actions may not be
employed until sometime after the release event. However, many of the above
measures (e.g., medical surveillance, access control, decontamination) should be
considered when any actual or potential release from a biosafety facility is recognized.
Section 33
In general, for either an observed or unobserved release, State or local public health
officials specify long-term protective action criteria and associated measures to be
implemented both onsite and offsite. These measures are often agent-specific,
reflecting the different agent characteristics (e.g., transmissibility, incubation period,
stability, available hosts, and affected species), facility design, and geographic and
demographic characteristics of the surrounding area. For example, a high concentration
of material coupled with additional risk factors, such as high potential for airborne
transmission and a high infectivity, virulence, and lethality, should elevate the
protective actions necessary.
For an effective response, it is imperative that site medical personnel coordinate
protective action planning with local/State public health agencies to ensure initial
measures taken by the site or recommendations made to offsite response organizations
have been agreed upon and can be seamlessly integrated with the public health
response. Because public health jurisdictional knowledge and experience may vary,
onsite emergency managers may have to provide technical agent expertise necessary to
determine appropriate protective actions.
The protective actions indicated above do not directly address worker safety
requirements, an integral part of biosafety response to an occupational accident within
the laboratory (e.g., hand washing, handling equipment, showering on exiting the
laboratory, PPE). In the event of an incident or OE, the laboratory workers will
implement the facility-specific BSL program safety protocols. Development of these
protocols is the responsibility of each DOE/NNSA biosafety facility and will not be
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addressed in this version of DOE G 151.1-5. Similarly, specific protective action
requirements for initial responders will be left to facility and response organizations to
identify and address as part of the planning process.
3.11 Public Health Response
A primary function of local, State, and Tribal public health agencies is to provide a
capability for identifying a “communicable disease emergency” in communities for
which they are responsible and for responding with measures to confine and arrest the
spread of the disease. In this capacity, public health assets will play a major role in
response to a release of hazardous biological materials from a DOE/NNSA biosafety
facility. Whether a release is strictly onsite or involves an offsite impact, public health
will ultimately assume primary responsibility for ensuring that the community is
protected from further exposure.
Local, State, or Federal public health response falls into three categories, which represent
a graded approach6:
1. Continuous Medical Surveillance. Continuous medical surveillance, a primary
community public health function, is a routine activity performed by public health
professionals who monitor incoming disease reporting data for indicators and patterns
to determine whether a communicable disease emergency is imminent. State-based
public health departments provide a central communications point for ongoing
surveillance, disease reporting, and epidemiological investigations. These
departments also serve as repositories for agent-specific knowledge. Routine disease
reporting, which is both mandated and regulated, originates from medical facilities,
clinics, laboratories, and private clinician offices. These diseases usually have
potential for a broad community impact (e.g., pertussis) and necessitate a public
health response. Surveillance efforts have been increased and broadened in both the
public health and medical communities to include rapidly emerging infectious
illnesses (e.g., SARS, avian and pandemic influenzas).
Section 34
2. Active Investigation. Active investigation is a routine public health practice initiated
by a positive surveillance event. Active investigations occur on a daily basis as
public health professionals interpret incoming data from reports or direct
observations. As a result, they make professional judgments on the scope of further
actions based on potential impact and anticipated severity.
3. Emergency Response. Initiated by public health organizations to mitigate an
unusual public health occurrence, emergency response actions can include broader
epidemiological investigations, medical screening and laboratory sampling, mass
prophylaxis/vaccination, isolation/quarantine, public information and risk
6 Development of Models for Emergency Preparedness, Personal Protective Equipment, Decontamination,
Isolation/Quarantine, and Laboratory Capacity, Agency for Healthcare Research and Quality, U.S. Department of
Health and Human Services (HHS), Bettina M. Stopford, RN, Laura Jevitt, Michele Ledgerwood, Christa
Singleton, MD, MPH, Martin Stolmack, EMT-P, AHRQ Publication No. 05-0099 August 2005.
DOE G 151.1-5 3-19 (and 3-20)
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communication, hazards/site remediation, and legal involvement. Local public health
departments may lack the personnel to support a robust surge response capacity and
will need to be linked to regional assets and the State public health agency.
Emergency response will vary depending on locale, population affected, and relative
hazard as perceived by the local public health officer with legal authority.
DOE/NNSA site emergency managers should become familiar with local and State
public health capabilities. They should coordinate and reach agreement on sole and
shared responsibilities in order to coordinate efforts during an observed release OE at the
biosafety facility, or in response to an identified communicable disease emergency that
can be associated with an unobserved release OE at the facility. To enhance
Departmental response capabilities, DOE/NNSA biosafety facilities should provide
agent-specific data to local public health agencies as part of pre-planning.
Following an OE declaration, DOE/NNSA emergency managers should expect to provide
agent and procedure- /protocol-specific information and personnel accountability data;
and should have pre-planned methodologies in place for: 1) rapid identification of
potentially exposed personnel; and, 2) isolation for medical screening and treatment
purposes. To ensure an integrated response, plans should be developed in coordination
with the appropriate public health agencies by providing symptom-specific awareness
training for all personnel and maintaining a central reporting process for ongoing medical
surveillance. The public health and medical communities will likely look to the
DOE/NNSA biosafety facility to provide expert level professionals familiar with facility-
specific agents and to initiate an active, systematic monitoring program and response
protocols addressing DOE/NNSA personnel tracking and epidemiological investigations.
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4. EMERGENCY MANAGEMENT PROGRAM FOR
BIOSAFETY FACILITIES:
TECHNICAL PLANNING BASES
Section 35
The Emergency Management Program for a DOE/NNSA facility can consist of two
components: an Operational Emergency Base Program and an Operational Emergency
Hazardous Material Program. Each DOE facility/site or activity is required by
DOE O 151.1C to have an Operational Emergency Base Program, which provides the
framework for response to serious events or conditions that involve the health and safety
of workers and the public, the environment, and safeguards and security. Although
DOE O 151.1C establishes several DOE-unique requirements and a minimum set of
generic requirements for the Base Program, the framework for response results mainly
from the implementation of the requirements of DOE regulations, other DOE orders, and
applicable non-DOE Federal, Tribal, State, and local laws/regulations/ordinances. The
specific requirements that constitute the Operational Emergency Base Program are the
emergency planning and preparedness aspects of these Orders and
laws/regulations/ordinances. Examples of emergency response features addressed in
other DOE Orders and laws/regulations/ ordinances include: medical support, worker
evacuation plans, fire drills, worker notification systems, hazardous material
communication, contingency planning for oil spills, environmental spill drills and
exercises, and DOE security and safeguards requirements. The objective of the Base
Program is to achieve an effective integration of emergency planning and preparedness
requirements into an emergency management program that provides capabilities for all-
emergency response, through communication, coordination, and an efficient and effective
use of resources.
DOE O 151.1C requires that emergency management planning efforts begin with
identification of facility-hazards and that the scope and extent of emergency planning and
preparedness be commensurate with these hazards. The Hazards Survey identifies key
components that provide a foundation of basic emergency management requirements and
an integrated framework for response to serious events involving health and safety and
the environment. Much of the information in the Hazards Survey should already be
collected in the course of meeting other DOE, NNSA, and Federal, Tribal, State, and
local authority requirements. The Hazards Survey is required by all facilities to identify
generic facility-specific hazards and to determine whether hazardous materials in the
facility require further analysis in an EPHA. The EPHA analysis provides the additional
planning and technical detail needed to ensure timely and effective response for these
identified hazards. The Hazards Survey and EPHA form the technical planning basis for
the emergency management Hazardous Material Program at the facility.
The following sections will address the impacts of the unique hazards posed by biological
agents and toxins on the associated processes and content of the Hazards Survey and the
EPHA. Issues, information, and methods that may be different than those typically used
to address radiological and chemical hazards will be the focus of this EMG document.
This discussion will not attempt to repeat the detailed guidance already provided in
DOE G 151.1-2. If the facility has other hazardous materials (chemical, radiological), in
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addition to biological agents/toxins, these should be included in the Hazards Survey and
subsequent EPHA according to the guidance in DOE G 151.1-2.
4.1 Hazards Survey
Section 36
Facilities involved in growth, handling, storing, or transporting of hazardous biological
materials are required to perform Hazards Surveys containing the same information at the
same level of detail as other DOE/NNSA facilities. Much of the content of the Hazards
Survey, such as the generic facility-specific hazards and Base Program requirements, is
addressed in detail in DOE G 151.1-2, Chapter 1. This chapter of guidance related to
biosafety facilities will focus on the screening process for hazardous biological materials.
The hazardous material screening process identifies hazardous biological materials that
require further analysis in an EPHA. All hazardous biological agents and toxins that are
subject to the requirements published in 42 CFR 73, 7 CFR 331 or 9 CFR 121, including
published updates, require further analysis in an EPHA in accordance with
DOE O 151.1C. Thus, DOE/NNSA biosafety facilities that use and/or store any of the
Select Agents/Toxins (subject to the Select Agent Rules) need to perform an EPHA and
implement a Hazardous Material Program.
Note that the screening process for biological agents does not include threshold
quantities, since no basis was identified for differentiating between quantities expected to
remain strictly an internal facility problem versus those that can potentially result in an
external release to the environment. In contrast to agents, each toxin listed should exceed
a specified aggregate amount under the control of “a principal investigator, treating
physician or veterinarian, or commercial manufacturer or distributor” in order to be
subject to the Select Agent Rules. If the toxins do not exceed the quantities specified,
then they would not be subject to the Select Agent Rules and, therefore, would not
require registration or containment in the biosafety facility, as long as the quantities
remained below the specified aggregate limits for “a principal investigator, treating
physician or veterinarian, or commercial manufacturer or distributor.” These toxins
would not require further analysis in an EPHA or a Hazardous Material Program. In
addition, these excluded quantities will not require further analysis even if the same
specific toxin is being maintained by others in the facility. It is consistent with the Order
to screen out these excluded quantities of toxins. Hence, if a toxin maintained by an
individual or commercial entity is excluded, it no longer enters into consideration in
emergency management planning but becomes the sole responsibility of biosafety
response.
The Select Agent Rules require that each biosafety facility maintain an accurate, current
inventory of each Select Agent and toxin held. This inventory includes the following
information:
• Name and characteristics of agent/toxin
• Quantity acquired from another individual or entity, date of acquisition, and source of
agent/toxin (i.e., individual or entity)
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• Location where the agent/toxin is stored
• Record of agent/toxin use:
– Select agent/toxin used and the purpose of use
– When moved from storage and by whom
– When returned to storage and by whom
The emergency management organization should have access to this inventory data and
should be notified in a timely manner when changes occur that modify the current
Hazards Survey. Changes resulting in a reduction of hazards with no adverse effect on
safety or emergency preparedness or response may be included in the next scheduled
review and update.
Section 37
4.2 Emergency Planning Hazards Assessment (EPHA)
The DOE/NNSA biological OE involves the actual or potential release of a hazardous
biological agent/toxin to the environment outside the BSL secondary barriers of the
biocontainment area. The environment might be the public area outside of the building/
facility, if the laboratory has external walls or air exhausts to the outside, and could even
include publicly accessible corridors or other laboratories, if the biosafety laboratory is
contained within a facility.
The Select Agent Rules require that an Incident Response Plan fully describe response
procedures for the release of a Select Agent or Toxin, severe weather and other natural
disasters, workplace violence, bomb threats, suspicious packages, and emergencies such
as fire, gas leak, explosion, power outage, etc. Response procedures should account for
hazards associated with the Select Agents and Toxins and provide appropriate actions to
contain them. Each of these events/conditions should be analyzed in the EPHA as
potential initiators for the release of hazardous biological materials. Other emergencies,
such as accidents in the facility and other external events, should be also analyzed to
develop a spectrum of representative scenarios. The spectrum of scenarios required for
the planning basis of the emergency management program should cover the scope of
recognition factors and potential protective actions that might be needed for the specific
facility inventory.
This section outlines a process for conducting and documenting an EPHA for biosafety
facilities. The definition of an OE given in DOE O 151.1C will be the basis for the
EPHA analyses to be performed for identified hazardous biological agents/toxins.
Suggested steps in the hazards assessment process follow:
1. Define and describe the facility and operations.
2. Characterize the hazardous materials.
3. Select scenarios for analysis
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4. Analyze scenarios:
a) Estimate source term (if appropriate and feasible).
b) Identify/estimate/calculate consequences (as appropriate).
c) Identify recognition factors and protective actions.
d) Finalize technical planning basis scenarios.
5. Document the results of the analyses.
The sections that follow address recommended steps in the EPHA process for biological
hazards.
4.2.1 Define and Describe Facility and Operations
In general, this section of the EPHA should be prepared in the same manner as for any
other facility containing hazardous materials. Descriptions of the key elements of the
primary and secondary containment, including their governing procedures/protocols,
operational practices, and required safety equipment, should be sufficiently complete to
support the EPHA analysis of scenarios. In addition, descriptions of applicable facility
design features and environmental controls will contribute to analyses of selected release
scenarios. Original reference materials (e.g., BMBL risk assessment, biosafety plans,
and detailed procedures) can be referenced in the EPHA to support the descriptions
given.
4.2.2 Characterize the Hazardous Materials
Section 38
This section should identify material locations, storage conditions, containment
requirements, activities involving the materials, forms/formulations of the materials,
quantities, and characteristics of the specific biological materials used, stored or
transported in association with the facility. Thorough identification of these parameters
is crucial for performing the analysis that supports determination of potential
consequences and development of appropriate response measures. Much of this
information should be readily available since it was likely needed for determining the
biosafety level for the facility (e.g., risk assessment). In addition, as discussed in Section
4.1, above, the Select Agent Rules require an accurate and current inventory.
4.2.3 Select Scenarios for Analysis
The objective of this step in the hazards assessment process is to select for detailed
analysis potential release scenarios associated with the hazardous materials characterized
in the previous section. These analysis cases will ultimately represent a spectrum of
possible scenarios that will serve as the technical planning basis for the facility
emergency management program.
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Specific cases to be analyzed in the EPHA should be chosen through a systematic
examination of:
• All hazardous biological materials in the facility
• Any other hazardous material in the facility (chemical, radiological)
• Barrier(s) that maintain each material in a safe condition, either in a static
configuration (e.g., storage) or during an activity in an active configuration
(e.g., centrifuging)
• Modes by which the initial barrier (e.g., safety centrifuge cup) could fail
• Initiating events or conditions that could cause barrier failure modes
• Release conditions (additional barriers and mitigating factors) associated with the
failure mode and/or the initiating event
Release conditions generally represent failures of the secondary barriers of the
biocontainment area. These failures provide release pathway(s) through which
biological material could be transported to the environment (i.e. beyond the
biocontainment area), given a release within the biocontainment area. Success and
failure associated with release mitigation systems or barriers may represent additional
specific cases for analysis.
DOE G 151.1-2, Chapter 2, introduces a recommended minimum set of event or
condition types to be considered for analyzing hazardous material releases. A systematic
approach for developing a manageable number of representative scenarios for each
hazardous material in a facility is introduced in DOE G 151.1-2, Section 2.5.
Failure of barriers may reveal generic “failure mode” scenarios that can be applied to a
number of types of agents/toxins and associated activities to be performed in the
laboratory. These generic failures and scenarios will evolve from systematic examination
of the spectrum of events and development of the final planning basis. If carefully
constructed, this set of generic scenarios may simplify the emergency response tools to
enhance their usability and efficiency. This approach may be especially effective for
biosafety facilities that use and/or store multiple types of biological hazards.
Section 39
The spectrum of events and conditions analyzed should include those exclusively
affecting onsite personnel, as well as those also affecting the offsite public. Note that
analysis of a spectrum of events does not mean analysis of every imaginable event.
The goal is to create a comprehensive picture of the types of events and a range of
associated “consequences” that could occur at a facility. This comprehensive picture
of events and consequences will then serve as the basis for emergency response planning
(e.g., recognition factors, protective actions).
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Select Types of Event/Conditions for Analysis. For each of the agents/toxins previously
identified and characterized, the types of OE events and conditions to be considered for
inclusion in the technical planning basis should be identified. These, in turn, are
developed into a spectrum of release scenarios to reflect the range of release
consequences and encompass the scope of possible release events at the facility.
Initiating events from four general groups should be considered, namely, accidents,
natural phenomena, external events, and malevolent events. The Hazards Survey should
be the starting point for identifying the general types of facility-specific hazards that
result in emergency conditions at the biosafety facility.
1. Accident Events: Accident event initiators include failure causes, such as
manufacturing defects, malfunctioning biosafety equipment or control systems,
internal events (explosions, fire), process upsets, and procedural or human error. In
many cases, these types of events (observed) are accompanied by obvious and/or
measurable indicators, such as fire, explosion, equipment failure, etc., where
immediate monitoring, sampling, and/or surveillance could be initiated to determine
if a release of a biological agent/toxin has occurred. An OE condition will usually
require that a biosafety control also fail in order to provide a secondary barrier failure
that leads to a release to the environment. This situation may be detectable through
the active routine surveillance program of biosafety controls.
Because biological hazards can be transported by a variety of mechanisms other than
just the airborne pathway and event indicators may be delayed or develop over time,
other types of accident event scenarios should also be considered. Scenarios resulting
in loss of containment and release of a biological hazard into the environment could
include accidental infection of a worker, release or improper disposal of infected
laboratory animals, spread of contamination by a vector (e.g., insects, rodents), and
facility worker error, such as failure to follow established practices, procedures and
protocols. The transport mechanism and time frame for these types of scenarios can
be considerably different than for a radioactive or chemical hazardous material
release. For example, the unobserved accidental spread of a biological hazard by an
infected host or vector could be followed some time later (e.g., days, weeks) by the
manifestation of symptoms in infected humans and the eventual indirect detection by
local medical surveillance protocols.
2. Natural Phenomena Events: These scenarios are based on events caused by natural
phenomena that could result in a breach or failure of the facility biocontainment
system(s) and loss of control over biological material(s). Types of phenomena that
can cause these events include earthquakes, floods, tornados, and high winds
(e.g., hurricanes).
Section 40
3. External Events: External events have the potential to initiate the onsite release or
loss of control of hazardous biological materials either directly or by disruption of
operations or processes onsite. These events include: aircraft crash; fire in adjacent
building causing a release of a hazardous material; external impact (e.g., vehicle
impact, dropped load); wildland fires; transportation accidents involving release of a
hazardous chemical; and loss of power due to offsite facility or utility accident.
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These events or conditions might result in the accidental release of biological
materials if, for example, proper emergency shutdown procedures are not
implemented or biosafety facility workers do not conduct decontamination protocols
during an evacuation of the facility.
4. Malevolent Events: Malevolent events (e.g., vandalism, sabotage, terrorism),
including the use of explosives or flammable material, are possible biological
material release initiators within the scope of emergency planning and the EPHA.
Many malevolent events are likely to produce releases and consequences similar to
those that could be caused by accidental or other external initiators. For example,
failure of a biosafety storage container might be postulated due to a seismic or
tornado event. It is likely that deliberate failure of a container caused by a malevolent
act would result in the same consequences as a failure resulting from another type of
initiator. Further discussion of malevolent events and their inclusion in the technical
planning basis can be found in DOE G 151.1-2, Appendix E.
Note that consideration of malevolent events in the EPHA is not intended to include
acts in which biological agents or toxins, not owned or controlled by DOE, are
brought onto a DOE site or facility as an act of terrorism.
Selection of a Spectrum of Scenarios. From the events and conditions considered above,
a broad spectrum of realistic scenarios will be selected to evaluate possible initiating
events and accident scenarios that could lead to release of hazardous biological materials.
Any contributing events or conditions that could influence the progression of the scenario
or alter the magnitude or nature of the consequences should be incorporated. In
identifying relevant scenario parameters, analysts should take into account the range of
transport mechanisms available with biological agents, including the possibility of
multiple transport mechanisms for the same event.
Development of specific scenarios to be analyzed involves taking the types of events and
conditions identified above and providing relevant information in the sequence of steps
listed below:
1. Identify the Material-At-Risk (MAR) quantities in the facility – The MAR is the
quantity of the agent or toxin that could be released in an emergency event. For many
scenarios, the MAR may be assumed equal to the total quantity authorized for use in
a specific laboratory activity.
2. Identify barrier(s) – Physical or administrative features that maintain the hazardous
substance in a safe condition should be identified for each MAR. The initial barrier
(e.g., container) is to be evaluated to identify failure modes in Step 3, discussed
below. Other barriers should also be identified, since their failures may play a role in
permitting the release of materials to the environment [e.g., a safety system that
prevents exposures to workers inside the laboratory or a facility design feature that
prevents the escape of material to the outside environment (e.g., Class II BSC)].
Section 41
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3. Select failure mode(s) – Failure modes are ways in which the initial barrier might
lose its integrity or its ability to confine or control hazardous material. Failure modes
that are applicable to the initial barrier for the particular MAR being addressed
should be selected.
4. Identify initiating event(s) – Initiating events/conditions cause the failure mode
specified in the scenario. A failure mode can be caused by a number of different
initiating events/conditions. Initiating events and mechanisms considered should
include traditionally defined “accidents” and those arising from natural phenomena,
external causes, and malevolent acts.
5. Identify release conditions(s) - Conditions that could influence progression of the
release scenario or alter the magnitude or nature of the associated consequences
should be identified in this step. These release conditions can result from failures of
other primary barriers and/or secondary barriers or the success or failure of
mitigating factors (e.g., fire suppression systems). These release conditions will
reflect the status or functional condition of barriers/structures and mitigation systems
prior to or resulting from the impact/influence of the initiating event.
Biosafety facilities that work with biological agents/toxins may not have a Safety
Analysis Report (SAR)/Documented Safety Analysis (DSA) to support the identification
and development of scenarios. However, facilities should have a hazard analysis
prepared in accordance with DOE Health and Safety Program requirements (e.g., IBC
process). Also, the risk assessment used to determine the assigned BSL for the laboratory
should provide information about biocontainment barriers.
4.2.4 Analysis of Scenarios
For radioactive and chemical hazardous materials, after a range of possible releases has
been identified, representative analysis cases are selected and analyzed. The source term
is identified and potential consequences calculated to determine the areas potentially
affected and the need for personnel protective actions. Development of a final set of
technical planning basis scenarios also includes identification of recognition factors and
protective actions for each scenario.
Biological agents can be transported by a variety of mechanisms including airborne,
waterborne, infected host and surface contamination. Development of a source term and
consequences similar to other hazardous materials can be difficult if a hazardous
biological material is transported outside a facility via a transport mechanism other than
the airborne pathway. Based on the characteristics of biological agents discussed in
Chapter 2 of this Guide and the range of quantities of biological materials likely to be
found in DOE/NNSA biosafety facilities, estimation of a source term and calculation of
consequences based on a health impact at a specific distance may not be as feasible or
reliable as for other hazardous materials. Therefore, analysis of scenarios involving
biological agents and toxins may require a different approach. If, on the other hand,
sufficiently large size quantities are used and/or stored in these facilities, source terms
and calculations of range-to-effect could be expected.
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Section 42
The spectrum of scenarios should first be characterized and then analyzed in order to
estimate consequences (if possible) and finalize technical planning basis scenarios. The
first step is to identify material form/formulation, estimate the source, and identify the
activity. Relevant containment procedures/protocols, safety equipment involved in the
activity, and facility design factors that contribute secondary barriers and mitigating
factors are identified. Next, the specific activity involving the agent should be examined
to determine possible external and internal initiating events, initial barrier failure modes,
and release conditions. Potential transport mechanisms for release from the facility and
transport in the environment are identified and expected stability of the agent in the
environment estimated. Potential receptors should be considered in estimating the
consequences of the release. Factors include the exposure mechanism as well as
transmissibility, infectivity and incubation period associated with the particular agent
used in the scenario.
A simplified approach for analyzing the biological scenarios suggested here will involve
an integrated description, including consideration of all parameters and information
related to the source (agent), activity, facility, failures, release, agent transport, agent-
receptor interaction, and potential effects on an exposed receptor, as displayed
schematically on a common template shown in Figure 3-1. Based on such a structured
description of each scenario, development of prompt recognition tools for categorizing
observed release OEs should be facilitated and development of initial protective actions
should follow. This analysis should also produce recognition indicators for unobserved
releases to be used by offsite medical surveillance programs to notify the facility if a
disease presents symptoms in the local community.
In some cases, calculations might be used to determine dispersion of airborne
(aerosolized material) as well as waterborne hazardous biological materials. However,
calculations may not be available for distances to specific impacts for many biological
scenarios. It is important to estimate a range of concern for most release mechanisms, if
feasible. Distance estimates such as those found in the DOT Emergency Response Guide
(ERG) for transportation accidents might be used as preliminary estimates, to be
modified based on the local situation. [Cf. Protective Action Zone distances for
biological sources specified in the 2004 Emergency Response Guidebook (ERG), U.S.
Department of Transportation, Washington, D.C.] For example, an immediate
precautionary measure for a transportation accident involving an infectious substance
(ERG, Guide 158) is to isolate for at least 25 meters (75 feet) in all directions from the
accident.
4.2.5 Identify Recognition Factors and Protective Actions
A key to effective emergency response is early recognition of an OE event, rapid
initiation of response measures, and activation of response capabilities. The analysis
approach suggested in Section 4.2.4, above, should lead to identification and analysis of
factors used to recognize a potential or actual release for each scenario. Recognition of
observed releases will likely occur at the facility, as the result of directly observable
indicators in combination with surveillance of biosafety control measures. In contrast,
unobserved releases are detected when an infected receptor(s) presents symptoms of the
Section 43
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disease and an active, ongoing medical surveillance program onsite and in the local
community provides the detection capability. Medical surveillance systems established
by State and local health agencies provide a mechanism for event recognition and these
agencies may take the lead at some point in the response.
Generic guidance for identifying and using recognition factors is presented in
DOE G 151.1-2, Chapter 2, for observed releases. To ensure a prompt recognition of
unobserved releases, it is essential that DOE/NNSA biosafety facilities provide
information related to biological agents and/or toxins used or stored at the laboratory to
Tribal, State, and local public health authorities as part of pre-planning. The information
provided (within the constraints of security requirements) should be sufficient to ensure
that medical surveillance programs are able to recognize a manifestation of symptoms
related to these materials. Identification of such an outbreak by medical surveillance
programs acts as a trigger for initiating notifications to the facility of the possibility of a
release.
Associated with the recognition of OEs, emergency responders should be ready to
implement protective actions (see Section 4.3.3, below) including expected duration of
the measures and where decontamination/clean-up operations should be conducted.
Protective actions implemented onsite for collocated workers or recommended for the
public are directly dependent on the specific characteristics of the agent/toxin released
from the facility, analyzed transport mechanisms for agents, and stability and behavior of
the agents in the environment. Adverse health effects are assumed to be possible in any
areas contaminated by the released agent or toxin.
Note that the OE protective actions addressed in this guidance focus on collocated
workers and the public outside of the biocontainment area, while the biological worker
safety program response appropriate for the BSL of the facility will focus primarily on
protection of the laboratory workers and the environment inside the biocontainment area.
4.2.6 Emergency Planning Zone (EPZ)
The hazards assessment process includes a determination of the size of the geographic
area surrounding the site, known as the Emergency Planning Zone (EPZ). Within the
EPZ, special planning and preparedness activities are required to reduce the potential
health and safety impacts from an event involving the airborne release of hazardous
materials. The methodology for the determination of the size of an EPZ is based on
consideration of the range of consequences at various distances calculated for each
scenario analyzed in the EPHA. However, because the current approach to analysis of
biological hazards for planning purposes does not lend itself to such considerations,
hazardous biological material release consequences will not be used at this time for
determining EPZ size.
4.2.7 Documentation of the EPHA
As with other EPHAs, an analysis addressing biological hazards should be prepared and
documented to permit critical review by independent analysts. Detailed descriptions of
DOE G 151.1-5 4-11
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Section 44
methods, assumptions, and models need not be included in the EPHA if they are
documented elsewhere and referenced. In addition to the detailed guidance for
documenting the EPHA presented in DOE G 151.1-2, it is of particular important to
emphasize the possible impact that the hazards will have on determining the size, scale,
characteristics of required functions, activities, or components of the emergency
management program. This section of the EPHA should characterize those aspects of the
hazards that will enable the emergency management staff to tailor the emergency
management program to be commensurate with the hazards.
4.3 Example Release Scenarios
A limited set of notional OE biological release scenarios has been developed for purposes
of further illustrating an approach for analysis in the EPHA. Examples of equipment and
operations that may create hazards in a biosafety facility can be found in the World
Health Organization (WHO) Laboratory Biosafety Manual, 3rd Edition.
The scenarios describe possible failures that could lead to a release of hazardous
biological materials outside secondary barriers. Eight notional scenarios were developed
to demonstrate various operations and event initiators. Scenario narratives are presented
in Appendix A of this Guide, where the results of the analysis approach provide a
general indication of the information needed to develop an effective and prompt
response. Analysis is focused on the development of recognition factors and protective
actions.
These notional scenarios are intended to convey general aspects of the approach without
incorporating technically accurate, facility-specific details necessary for producing a
realistic set of recognition factors and protective actions. Thus, details related to facility
design, its relationship to other facilities on the site, and the surrounding geographic,
economic, and demographic characteristics are not part of the protective actions to be
presented later in this section, especially with regard to the longer-term actions.
4.3.1 Source and Release Parameters
The following is the narrative describing the first scenario contained in Appendix A:
Accident Scenario 1: Tube Breakage in Centrifuge (release of B. anthracis
spores as an aerosol)
Incident: Two 50 ml tubes containing 40 ml each of 1x109 spores/ml of Bacillus
anthracis are placed in a centrifuge. A floor model centrifuge is used outside of
the Class II BSC. A hairline crack in one of the centrifuge tubes goes unnoticed,
causing the test tube to break early in the centrifuge run, releasing the solution.
The technician opens the centrifuge door immediately after hearing the tube
break, potentially releasing aerosolized spores (0.1 -1% of the solution =
50,000,000 to 500,000,000 spores or 500 to 5000 times ID50 value) into the
laboratory environment.
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Conditions: The biosafety program requires that all centrifuges be used only in a
Class II BSC, since the centrifuges in the facility are not equipped with a HEPA
filtration system on the exhaust to the environment outside the biocontainment
area.
Because the centrifuge was used outside of the Class II BSC and the facility
HVAC system does not have a filtered exhaust, an aerosolized solution containing
Bacillus anthracis spores may have been released to the environment outside the
biocontainment area. The assumed release duration is 30 minutes, based on
evaporation, settling, and an air exchange rate of 10 room-air-exchanges per hour.
Section 45
Recognition: The possible release of a biological agent into the external
environment outside the biocontainment area is the basis for declaring an OE.
Recognition indicators include:
• Laboratory personnel observe or discover damage to the test tube and release
of the solution of Bacillus anthracis spores.
• The centrifuge is used outside the Class II BSC, in violation of laboratory
biosafety procedures.
Incident is intended to describe the source, form, activity, initial barrier (physically
closest to the material), and initiator of the event. Conditions are expected to provide
details of other containment barriers or mitigating factors that will fail and subsequently
release the material to the environment. Specific transport mechanisms are also
indicated. Recognition provides the candidate set of indicators that will represent
scenario-specific criteria, which, if satisfied, will result in categorization of the event as
an OE.
The eight scenarios from Appendix A are summarized in Table 4-1 (at the end of this
Chapter), which identifies the information/data needed in the key areas that each scenario
should identify as part of the EPHA process (from Figure 3-1). Tables in this section are
presented to demonstrate a process for collecting and structuring information for
analyzing each scenario. They do not represent the only acceptable way to collect,
organize, and analyze information used to develop recognition tools and initial
protective actions.
4.3.2 Recognition Factors
Recognition of observed releases will occur at the facility as the result of direct indicators
of the release (e.g., initiating event, barrier failure). In contrast, unobserved releases
(e.g., unreported infected host, contaminated vectors) could remain undetected for a
substantial period of time following the actual facility event. Indirect detection of these
events can occur as the result of the employee medical surveillance program or
identification of a disease cluster above expected norms in the local population by the
medical and/or public health community.
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Table 4-2 (at the end of this Chapter) contains recognition factors related to the example
scenarios in Appendix A. Most of the scenarios relate to observed releases. However, as
indicated in Appendix A, failure to check operability of a specific system during a facility
accident/incident or to identify correlations between observables in some scenarios could
result in facility staff not recognizing that a release has actually or potentially occurred
and, hence, the event could remain an unobserved release. Criteria for unobserved
releases to be used in epidemiological aspects of the onsite medical surveillance program
or for offsite disease surveillance activities are not addressed in this Guide; this task
should be addressed at each DOE/NNSA biosafety facility.
A facility-specific analysis will lead to a more definitive set of OE criteria resulting in an
OE declaration that would provide the facility with higher level of confidence that an
actual or potential release to the environment has occurred. In addition, a reliable and
timely monitoring and detection capability would further enhance the level of confidence.
4.3.3 Initial Protective Actions
Section 46
Many of the protective actions implemented in radioactive and chemical hazardous
materials incidents/situations are generally effective in response to biological
agents/toxins releases. Protective action examples in this section address primarily onsite
workers in collocated facilities and the offsite public. These examples differ from the
agent/toxin-specific medical protective measures (e.g., treatment availability,
vaccinations), which are developed at each facility.
Initial protective action examples for biological releases have been defined in
Section 3.10, above, to include:
1. Access control
2. Sheltering/shelter-in-place
3. Evacuation
4. Medical surveillance
5. Quarantine
6. Decontamination
7. Vector control
8. Control/disinfection of contaminated water supplies
9. Control of contaminated food products
10. Changes in livestock and agricultural practices
Some of these protective actions, such as vector control, control/disinfection of
contaminated water supplies, control of contaminated food products, and changes in
livestock and agricultural practices, are generally longer-term measures where planning
can begin in the initial time frame. Protective actions to be implemented for each
scenario will depend on the expected transport mechanisms in the environment. In the
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table below, the most commonly implemented protective actions for the biological agent
release (using the numbering scheme given above) are identified. The three transport
mechanisms in the environment are: 1) Environmental dispersion (i.e., airborne,
waterborne); 2) Release via an infected host; and 3) Release via a contaminated person or
object. Example initial protective actions and potential longer-term measures (italics) are
provided for each transport mechanism, as follows:
Transport Mechanism in the
Environment
Protective
Actions
• Environmental Dispersion
- Airborne 1 2 3
- Waterborne 1 8
• Infected Host
- Human 4 5
- Vector 1 3 7
• Contamination
- Human 6
- Vector 1 3 7
� Medium/Objects
� Soil 1 3 6
� Water 1 3 8
� Agricultural products 9 10
� Equipment 1 6
The table provides selected protective actions that may be implemented or recommended
for the set of scenarios in Appendix A. The protective actions for scenarios presented in
Table 4-3 (at the end of this Chapter) are derived from the above lists. Actual facility-
specific protective actions for the set of scenarios would reflect the real situation onsite
and offsite (e.g., distances, directions, collated facilities, geographical features,
agricultural enterprises).
Note that in some instances, groups of initial protective actions within the set assigned to
the scenarios in Table 4-3 appear multiple times. This provides the opportunity to
implement generic subsets of initial protective actions (consisting of a number of
measures) for a variety of scenarios. This use raises the possibility of developing a
simpler and more effective protective action strategy, especially for facilities that may be
involved with several agents.
Examples of generic scenario characteristics are presented in Table 4-4 (at the end of this
Chapter). A common Standard Initial Protective Actions set is defined in Table 4-4 (a)
and two example airborne release scenarios are given in Table 4.4 (b). Associated with
each airborne release scenario are candidate protective actions. In the first scenario, the
agent is assumed not transmissible and protective actions are based on the Standard
Initial Protective Actions. Because the agent is transmissible in the second example
Section 47
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scenario, protective actions include the Standard Initial Protective Actions plus additional
measures to be considered as shown in Table 4-4 (b). These examples of initial protective
actions are presented for two cases of an airborne release of a biological agent in order to
demonstrate the dependence of protective actions on agent characteristics.
Methods presented in this section for developing and implementing protective actions for
biological OEs are intended to focus on general concepts and convey a structured process
for analysis. However, biosafety facility emergency planners should implement an
approach best suited for their hazards, the facility, and the emergency management
program in place at their location.
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Table 4-1. Source and Release Parameters
Source Failure(s)
Scenario Agent/Toxin Quantity Form & Activity
Containment
Barriers
Procedures/
Protocols
Initiating
Event(s)
Barrier
(Initial)
Failure
Mode(s)
Release
Condition(s)
1 Bacillus
anthracis
2 tubes with 1
x 109 spores
each
Spores in
solution; being
centrifuged
Class II
BSC with
HEPA
filter; PPE;
facility
design
Centrifuge
procedures,
Biosafety
Program
Failure to
follow
centrifuge
safety
protocols
Vial
containing
spores in
solution
Spill/drop
caused by the
centrifuge
tube break
Facility
HVAC system
picks up
aerosolized
material then
exhausts them
to the
environment.
2 Yersinia
pestis
Unknown Infected
laboratory
animals in
cages
Pest
Control
Program
(e.g., cages,
traps,
pesticides,
training);
facility
design
Pest Control
Procedures,
Change
Control
Procedure
Failure to train
contract
workers on
Pest Control
Program
Pest
Control
Program
Construction
personnel fail
to cap new
cable entries
Uncapped
cable entries;
feral rodents
enter facility,
contact
infected
rodents, fail to
be trapped,
and escape to
environment
3 Clostridiu
m
botulinum
toxin
300 ml with 1
x 109 cells per
ml
Production of
Botulinum toxin
from spores in
solution
Anaerobic
jar; Class II
BSC with
HEPA
filter;
HEPA
filter on
HVAC
exhaust;
PPE;
facility
design
Procedures
for using
anaerobic jar
in BSC II
Wire capsule
is not placed
around catalyst
causing the
anaerobic jar
to explode
Anaerobic
jar
Shattering of
the anaerobic
jar
HEPA filter in
Class II BSC
fails or is not
in use; HEPA
filter on
HVAC
exhaust fails or
is not in use;
air-handling
systems on the
BSC and the
facility draw
air from
laboratory
space and
exhaust to the
environment.
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Table 4-1. Source and Release Parameters (cont’d)
Source Failure(s)
Scenario Agent/Toxin Quantity Form & Activity
Containmen
t Barriers
Procedures/
Protocols
Initiating
Event(s)
Barrier
(Initial)
Failure
Mode(s)
Release
Condition(s)
4 Bacillus
anthracis
1 gram (1x1012
spores/g)
Experimentatio
n conducted
with B.
anthracis dry
spores in a
single container
Container Facility
Biosafety
Program,
DOE Safety
Analysis
Program
Earthquake Container Container is
broken due to
shock effects
of the
earthquake
Loss of power
and other
damage
renders HVAC
and BSCs
inoperable;
loss of
building
integrity;
failure to
decontaminate
due to
perceived
danger of
collapse
5 Clostridium
botulinum
toxin
0.5 gram Experimentatio
n conducted
with
Clostridium
botulinum toxin
as dry powder
in a single
container
Container Biosafety
Program,
DOE Fire
Protection
Program
Facility fire Container Container is
broken due to
shock effects
of being
dropped
Section 48
Facility
HVAC system
is unfiltered;
airborne
material is
vented to the
environment;
fire protection
system (water)
is activated;
wastewater
discharged
through
outfall.
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Table 4-1. Source and Release Parameters (cont’d)
Source Failure(s)
Scenario Agent/Toxin Quantity Form & Activity
Containmen
t Barriers
Procedures/
Protocols
Initiating
Event(s)
Barrier
(Initial)
Failure
Mode(s)
Release
Condition(s)
6 Yersinia
pestis
Unknown Multiple
experiments
being conducted
with Yersinia
pestis Bacteria
in solution
Test tubes
and flasks;
facility
design
Biosafety
Program
Explosion of
propane truck
near facility
Test tubes
and flasks
Test tubes and
flasks break
due to shock
effects of the
blast
Loss of power
and other
damage
renders HVAC
inoperable in
BSCs, loss of
building
integrity
(i.e., openings)
7 Crimean-
Congo
hemorrhagi
c fever virus
Unknown Infected host
being
transported
Biosafety
cage and
transport
vehicle
Transportatio
n procedures
for infected
laboratory
animals;
protocols for
blood borne
pathogen
protection
Transportation
accident
Biosafety
cage and
transport
vehicle
Damage to the
transport
vehicle and
cage, injures
the infected
laboratory
animal
causing it to
bleed
Responders
come into
contact with
infected blood
and violate
bloodborne
pathogen
protection
procedures;
vectors feed on
blood and
excrement at
scene and
become
infected
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Table 4-1. Source and Release Parameters (cont’d)
Source Failure(s)
Scenari
o Agent/Toxin Quantity Form & Activity
Containmen
t Barriers
Procedures/
Protocols
Initiating
Event(s)
Barrier
(Initial)
Failure
Mode(s)
Release
Condition(s)
8 Bacillus
anthracis
Container with
1 gram
(approximatel
y 1x1012
spores)
Dried Bacillus
anthracis spores
in a container
set up in a BSC
for an
experiment
Class II
BSC with
HEPA
filter; PPE;
facility
design
Centrifuge
procedures,
Biosafety
Program
Malevolent
act,
disgruntled
employee
smashes
container and
discards PPE
outside of
biocontainmen
t are
Container Airborne
release caused
by Malevolent
Act
Contaminatio
n caused by
employee
violating
contamination
control
procedures
Facility
HVAC system
picks up
aerosolized
material then
exhausts them
to the
environment.
Contaminated
PPE discarded
outside of the
biocontainmen
t area.
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Table 4-2. Recognition Factors
Scenario (Agent/Toxin) Transmissibility
Transport to
Environment Recognition Factors
1. Tube Breakage in Centrifuge
[release of B. anthracis spores as an
aerosol]
No (inhalation
pathway)
Airborne dispersion via
the ventilation system
The experimenter or other laboratory personnel observe or
discover the damage to the test tube and the release of the
solution of Bacillus anthracis.
The centrifuge is used outside the Class II BSC.
2. Failure in Pest Control Program
[release of Y. pestis bacteria via
infected host]
High Infected Host (vector) Discovery of trapped feral mice within the facility
(indicating a potential failure in the pest control program).
Discovery of unsealed cable penetrations, which could
allow rodents and other vectors direct access to the interior
of the facility.
3. A naerobic Jar Explosion [C.
botulinum bacteria and toxin released
as an aerosol]
No Airborne dispersion via
the ventilation system
The anaerobic jar explodes in the Class II BSC
The HEPA filters in the Class II BSC are non-operational.
The HEPA filters in the HVAC system are non-operational
Section 49
4. Earthquake [release of dried B.
anthracis spores; airborne,
contaminated personnel and fomite
transfer]
No (inhalation
pathway)
Airborne dispersion and
transfer of contaminated
material
Earthquake occurs and causes significant damage to the
facility structure (including creating openings to the
environment).
The container holding dried Bacillus anthracis spores was
reported by personnel involved to have been spilled,
releasing the contents to the environment.
HEPA filters (Class II BSC, HVAC) are inoperable due to
the loss of ventilation flow.
Emergency evacuation of personnel from laboratory spaces
without following the standard decontamination and
disrobing procedures.
5. Facility Fire [airborne and
contaminated water release of C.
botulinum toxin]
No Airborne dispersion
through the ventilation
system, and water borne
release through building
outfall
The fire detection system activates fire alarms and the fire
suppression system.
The researcher handling the toxin reports the spill of the
material after exiting the room.
Water runoff from the activation of the sprinklers is
discharging through the outfall.
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Table 4-2. Recognition Factors (cont’d)
Scenario (Agent/Toxin) Transmissibility
Transport to
Environment Recognition Factors
6. Explosion [release of Y. pestis
bacteria; personnel contamination
and infected host]
High Airborne dispersion
Transfer of
contamination
Infected Host (Human)
The explosion causing visible damage to the facility structure
including creating openings to the environment
The tubes/beakers containing solutions of Yersinia pestis
bacteria break and release their contents.
The loss of electrical power to the Class II BSCs ventilation
and associated HEPA filters.
7. Transportation Accident [arthropod
and animal to human transmission of
a viral pathogen (Crimean-Congo
hemorrhagic fever virus)
Moderate Contamination from
infected host (animal)
Initial responders initiating protective actions at locations
beyond the immediate/affected area
8. Malevolent Act [Disgruntled
employee releases dried B. anthracis
spores]
No (inhalation
pathway)
Airborne dispersion via
the ventilation system
Contamination from
discarded PPE
Returning laboratory personnel find the discarded PPE
outside the containment area.
Laboratory personnel discover the smashed container inside
the containment area, approximately 30 minutes after the
employee leaves the work area.
Facility HVAC system is operating when the incident is
discovered; no mitigative actions took place prior to the
arrival of coworkers.
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Table 4-3. Example Protective Actions
Scenario
(Agent/Toxin) Transport to Environment
Stability of Agent/Toxin in the
Environment
Transport to
Receptors
Candidate
Protective Actions
for Collocated
Workers & the
General Public
1. Tube Breakage in
Centrifuge [release of B.
anthracis spores as an
aerosol]
Airborne dispersion via the
ventilation system
The spores are very stable and may
remain viable for many years in soil
and water. They resist sunlight for
varying periods. [High stability in the
environment]
Inhalation through
airborne dispersion
1 2 3
Contamination 1 3 6 7 8 9 10
Infected host (insects,
food animals, pets)
1 3 7 10
2. Failure in Pest Control
Program [release of Y.
pestis bacteria via infected
host]
Section 50
Infected Host (vector) At near freezing temperatures, it will
remain alive from months to years but
is killed by 15 minutes of exposure to
55°C. It also remains viable for some
time in dry sputum, flea feces, and
buried bodies but is killed within
several hours of exposure to sunlight.
[Moderate stability in the
environment]
Infected host (insects,
food animals, pets)
1 3 7 10
Contaminated animal
droppings
1 6 9 10
3. Anaerobic Jar
Explosion [C. botulinum
bacteria and toxin released
as an aerosol]
Airborne dispersion via the
ventilation system
The stability of botulinum toxin is not
equal in all environments. It is most
stable in neutral or alkaline foods.
Aerosolized botulinum toxin is
estimated to degrade at a rate of 1% to
4% per minute. [High stability in the
environment]
Inhalation through
airborne dispersion
1 2 3
Contamination 1 3 6 7 8 9 10
4. Earthquake [release of
dried B. anthracis spores;
airborne, contaminated
personnel and fomite
transfer]
Airborne dispersion and
transfer of contaminated
material
The spores are very stable and may
remain viable for many years in soil
and water. They resist sunlight for
varying periods. [High stability in the
environment]
Inhalation through
airborne dispersion
1 2 3
Contamination 1 3 6 7 8 9 10
Infected host (insects,
food animals, pets)
1 3 7 10
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Table 4-3. Example Protective Actions (cont’d)
Scenario
(Agent/Toxin) Transport to Environment
Stability of Agent/Toxin in the
Environment
Transport to
Receptors
Candidate
Protective Actions
for Collocated
Workers & the
General Public
5. Facility Fire [airborne
and contaminated water
release of C. botulinum
toxin]
Airborne dispersion through
the ventilation system, and
water borne release through
building outfall
The stability of botulinum toxin is not
equal in all environments. It is most
stable in neutral or alkaline foods.
Aerosolized botulinum toxin is
estimated to degrade at a rate of 1% to
4% per minute. [High stability in the
environment]
Inhalation through
airborne dispersion
1 2 3
Waterborne 1 8
Contamination 1 3 6 7 8 9 10
6. Explosion [release of Y.
pestis bacteria; personnel
contamination and
infected host]
Airborne dispersion
Transfer of contamination
Infected Host
At near freezing temperatures, it will
remain alive from months to years but
is killed by 15 minutes of exposure to
550 C. It also remains viable for some
time in dry sputum, flea feces, and
buried bodies but is killed within
several hours of exposure to sunlight.
[Moderate stability in the
environment]
Inhalation through
airborne dispersion
1 2 3
Contaminated animal
droppings
1 6 9 10
Infected host (insects,
food animals, pets)
1 3 7 10
Infected host (human) 1 3 4 5 6
7. Transportation Accident
[arthropod and animal to
human transmission of a
viral pathogen (CCH)]
Contamination from infected
host
The virus is rather fragile and does not
survive well outside the host. It is
rapidly killed by ultraviolet light. It is
very stable in the tick vector and
infected ticks remain infected
throughout their lives. [No stability in
the environment]
Contamination caused
by direct contact with
fluids from an
infected host
1 4 5 6
Infected host (insects,
food animals, pets)
1 3 7 10
8. Malevolent Act
[Disgruntled employee
releases dried B. anthracis
spores]
Airborne dispersion via the
ventilation system
Contamination from discarded
PPE
Section 51
The spores are very stable and may
remain viable for many years in soil
and water. They resist sunlight for
varying periods. [High stability in the
environment]
Inhalation through
airborne dispersion
1 2 3
Contamination 1 3 6 7 8 9 10
Infected host (insects,
food animals, pets)
1 2 3 7 10
4-24 DOE G 151.1-5
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Table 4-4. Examples of Generic Initial Protective Actions
(a) Standard Initial Protective Actions
Standard Initial Protective Actions
Access control: Control of personnel access to areas of potential exposure and/or contamination outside the
biocontainment area to prevent unnecessary exposures and minimize the spread of contamination. Access control
is most effective when implemented immediately upon recognizing that an area has been, or will be, affected by a
hazardous material release.
Sheltering/Shelter-in-place: Directing people to seek shelter inside a building or similar location and to remain
inside until the threat of exposure at dangerous levels passes. Shelter-in-place means directing people to stay
inside at their current locations until the threat of dangerous exposure passes. Sheltering/shelter-in-place is used
when evacuating collocated workers and/or the public would cause greater risk than staying where they are, or
when an evacuation cannot be performed.
Evacuation: Moving all people from a threatened area to a safer place. To perform an evacuation, there must be
enough time for people to be warned, to get ready, and to leave an area. If there is enough time, evacuation is the
best protective action. Evacuees should be sent to a definite place, by a specific route, far enough away from the
incident site so they will not have to be moved again if the wind shifts.
Decontamination: The removal of hazardous material from personnel and equipment to the extent necessary to
prevent potential adverse health effects. Contaminated clothing and equipment should be removed after use and
stored in a controlled area until cleanup procedures can be initiated. Decontamination also applies to removal of
hazardous materials that may have been deposited on the ground and on other structures in the vicinity of the
release.
(b) Airborne Release Scenarios
1. Airborne Release of a biological agent; the agent is not transmissible.
Standard Initial Protective Actions
2. Airborne Release of a biological agent; the agent is transmissible.
Standard Initial Protective Actions
Quarantine: Separation and restriction of movement of persons, who while not yet ill, have been exposed to a
transmissible biological agent and therefore may become infectious. Since quarantine may sometimes require long
periods of time pending definitive laboratory results, considerations for support of personnel may include food,
water and diversionary activities.
Medical Surveillance: Immediate and active medical surveillance activities, including a process to identify,
screen, test, and assess people who are most likely to have been exposed. Based on medical surveillance results,
identify candidates for monitoring and/or treatment.
5-1 DOE G 151.1-5
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5. EMERGENCY MANAGEMENT PROGRAM
FOR BIOSAFETY FACILITIES:
PROGRAMMATIC ELEMENTS
Section 52
The technical details necessary for establishing programmatic activities for developing,
implementing, and maintaining the emergency management program depend on the
documented “technical planning basis” contained in the Hazards Survey and EPHA
described in the previous chapter. Guidance in this chapter will emphasize integration of
the requirements of the Select Agent Rules with DOE/NNSA programmatic requirements
(i.e., planning, preparedness, and readiness assurance) for hazardous biological materials
and with an existing site emergency management program. Documentation of these
program elements in the Emergency Plan or program descriptions should clearly
characterize the role of tailoring in applying commensurate with hazards.
5.1 Program Administration
DOE O 151.1C directs that effective organizational management and administrative
control of a facility emergency management program be provided by establishing and
maintaining authorities and necessary resources commensurate with the associated
responsibilities to plan, develop, implement, and maintain a viable, integrated, and
coordinated program. This program administration element identifies the functions and
activities that should be implemented and effectively maintained to ensure that
emergency management programs at facilities/sites comply with both Base Program and
Hazardous Material Program requirements contained in DOE O 151.1C.
Contractors at all DOE/NNSA facilities must designate a qualified individual to
administer the emergency management program. This administrator should develop and
maintain the emergency plan, develop related documentation, develop the Emergency
Readiness Assurance Plan (ERAP) and annual updates, develop and conduct training and
exercise programs, coordinate readiness assurance assessment activities, and coordinate
emergency management resources.
An individual or entity (facility) required to register under the Select Agent Rules also
must designate an individual to be the Responsible Official (RO) with the authority and
control to ensure compliance with the Select Agent Rules. According to the Select Agent
Rules, the RO should:
• Have authority and responsibility to act on behalf of the entity.
• Ensure compliance with the requirements of the Select Agent Rules.
• Ensure that annual inspections are conducted for each facility/laboratory where Select
Agents or Toxins are stored or used in order to determine compliance with the Rule
requirements. Results of each inspection should be documented and any deficiencies
identified during an inspection should be corrected.
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In order to facilitate the seamless integration of CDC/APHIS incident response
requirements with DOE/NNSA biosafety facility emergency management requirements
and guidance, it is recommended that the designated RO also have overall responsibility
for implementing and maintaining the emergency management program as the biosafety
facility emergency management program administrator. As such, the designated
administrator/official has responsibility for program administration tasks that involve
compliance with Select Agent Rule requirements and existing DOE/NNSA emergency
management policy as expressed in DOE O 151.1C, with its companion guidance in the
DOE G 151.1-series. This dual responsibility includes:
Section 53
• Development of a specific integrated comprehensive emergency management and
incident response program based upon a graded approach commensurate with the
hazards. An integrated response program should include response to incidents
involving hazardous biological materials as well as response to other identified site
hazards.
• Development of an Emergency Plan (including Select Agent Rule Incident Response
Plan requirements) to fully describe facility response to incidents involving “theft,
loss, or release of a Select Agent or toxin, inventory discrepancies, security breaches
(including information systems), severe weather and other workplace violence, bomb
threats, suspicious packages, and emergencies such as fire, gas leak, explosion, power
outage, etc.” The emergency plan should account for hazards associated with Select
Agents/toxins and should detail appropriate actions for containing such materials.
• Documentation of the comprehensive emergency management program in the
Emergency Plan to describe provisions for biosafety facility response to OEs and,
specifically, provisions for response to an OE involving the release of a biological
agent or toxin from the biosafety biocontainment.
• Development of Emergency Plan Implementing Procedures (EPIPs) to describe how
the emergency plan should be implemented.
• Development of training, drill, and exercise programs for hazardous biological
materials response. These programs should be coordinated and integrated with
existing facility/site emergency response programs to prevent conflict with other
activities and to ensure that resources are available.
• Oversight by the emergency management program administrator of biosafety
program implementation and maintenance, especially routine surveillance of
biosafety protocols and practices, safety equipment, and systems that represent an
integral component of the safety and emergency management programs.
Other specific requirements are contained in the Select Agent Rules and DOE O 151.1C.
The primary task of the administrator is to ensure the program is effectively implemented
and maintained by directing and monitoring functions/activities. Tasks of the emergency
management program administrator can be extensive, covering the breadth of the
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program. However, delegating functions and activities or integrating them with site-wide
emergency management programs may satisfactorily accomplish these requirements.
The administrator should ensure that DOE/NNSA biosafety facilities review all
emergency preparedness documents, such as plans, procedures, scenarios, and
assessments for classified information using current classification guidance. If
documents such as EPHAs do not contain classified information, the emergency
management program administrator reviews them to determine if the documents contain
Official Use Only (OUO) information.
Additional guidance related to general aspects of Program Administration can be found in
DOE G 151.1-3, Chapter 1.
5.2 Training and Drills
DOE O 151.1C directs that a comprehensive, coordinated, and documented program of
training and drills be developed as an integral part of the emergency management
program to ensure that preparedness activities for developing and maintaining program-
specific emergency response capabilities are accomplished. The program should apply to
emergency response personnel and organizations the facility/site expects to respond.
Emergency-related information needs to be available to offsite response organizations.
Section 54
Training and drill tasks for DOE/NNSA facilities/sites with biological agents and/or
toxins involve integration of Select Agent Rule training requirements with existing
emergency management training policy given in DOE O 151.1C. For those DOE/NNSA
biosafety facilities registered under the Select Agent Rules, facilities containing
biological agents/toxins should provide incident response information and training to
each individual approved for access to the facility. All workers required to take
protective actions (e.g., assembly, evacuation, shelter) are to be provided the appropriate
hazard-specific training for their responsibilities and periodic drills. Training should
address particular needs of the individual, the work they will do, and risks posed by the
Select Agents or Toxins. Symptom-specific awareness training should be provided for
all personnel.
Routine surveillance of experience and skill levels of personnel in at-risk positions, such
as laboratory technicians/workers and maintenance, housekeeping, and animal care
personnel, needs to be maintained. Monitoring of biosafety facility activities will identify
additional training and education necessary to ensure the safety of persons working at
each BSL. Establishment of a regular education/recertification process is essential to
ensure the safety of all personnel at the location/activity.
Refresher training should be provided annually. A record of the training provided to each
individual working in biosafety facilities should be maintained, including name of the
individual, date and description of the training, and means used to verify that the
employee understood the training.
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Training and drills for hazardous biological agents/toxins should be hazard-specific, and
address two generic response scenarios. The first is the observed release scenario based
on observed facility accidents and initiating events. The second is the unobserved release
scenario based on recognition through medical surveillance. Training and drills for both
should involve onsite medical personnel; offsite public health officials and community
medical personnel should be invited to participate regularly.
General guidance for developing, conducting, and recording training and drills activities
can be found in DOE G 151.1-3, Chapter 2.
5.3 Exercises
DOE O 151.1C requires all elements of an emergency management program be validated
over a multi-year (5 years) period through a formal exercise program. The exercise
program validates facility- and site-level emergency management program elements by
initiating response to simulated, realistic emergency events/conditions replicating an
integrated emergency response to an actual event as nearly as possible. Planning and
preparation should use a structured approach that includes documentation of specific
objectives, scope, timelines, injects, controller instructions, and evaluation criteria for
realistic scenarios. Each exercise should be conducted, controlled, evaluated, and
critiqued. A critique process should be established to include gathering and documenting
observations of participants. Corrective action identified in the critique process should be
incorporated into the emergency management program.
Section 55
Similarly, the Select Agent Rules require that drills or exercises be conducted at least
annually to test and evaluate effectiveness of the emergency plan. A lessons-learned and
corrective actions program should also be implemented if no site-wide program is
available. After any drill, exercise, or incident, the emergency plan should be reviewed
and revised as necessary. Further guidance related to evaluations, lessons learned, and
corrective actions can be found in DOE G 151.1-3, Chapter 4, Readiness Assurance.
As part of a site-wide emergency management program, DOE/NNSA biosafety facilities
should conduct annual building evacuation exercises consistent with Federal regulations,
local ordinances, and National Fire Protection Association (NFPA) Standards.
Communications systems should also be tested at least annually with DOE Headquarters,
Cognizant Field Element, and offsite agencies. Site-level emergency response
organization elements and resources need to participate in a minimum of one exercise
annually. For multiple-facility sites, the biosafety facility should be the basis for the site
exercise, in its turn, as part of the rotation among facilities; the integration of its response
to hazardous biological releases with the site-wide emergency program should be tested
and demonstrated.
Each biosafety facility needs to exercise its emergency response capability annually and
include at least facility-level evaluation and critique. Evaluations of annual facility
exercises by Departmental entities should be performed periodically so that each facility
has an external Departmental evaluation at least every 3 years.
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The exercise program for DOE/NNSA biosafety facilities should be hazard-specific and
address the two generic types of scenarios, observed and unobserved releases. These
exercises should involve onsite medical personnel and, if possible, offsite public health
officials and community medical personnel. Although DOE O 151.1C only requires
offsite response organizations be invited to participate in site-wide exercises once every 3
years, the essential role of the offsite response in the case of biological releases suggests
that more frequent participation is desirable and should be encouraged.
Further guidance for developing and conducting exercises can be found in
DOE G 151.1-3, Chapter 3.
5.4 Readiness Assurance
As required by DOE O 151.1C, a Readiness Assurance program for emergency
management provides a framework and associated mechanisms to assure emergency
plans, implementing procedures, and resources are adequate and sufficiently maintained,
exercised, and evaluated (including assessments and appraisals). The Order requires
appropriate and timely improvements to be made in response to needs identified through
coordinated and comprehensive emergency planning, resource allocation, training and
drills, exercises, and evaluations.
As indicated in Section 6.3, below, the Select Agent Rules require that drills or exercises
be conducted to test and evaluate the effectiveness of the emergency plan. In addition,
the HHS Secretary is allowed to inspect any biosafety facility at which activities
regulated by the Select Agent Rules are conducted. Prior to issuing a certificate of
registration to an individual or facility (entity), the HHS Secretary may inspect and
evaluate the premises and records to ensure compliance with the Rules.
Section 56
A Readiness Assurance program consists of evaluations, improvements, and ERAPs.
The biosafety facility emergency management program is subject to internal and external
program and exercise evaluations. Routine surveillance of biosafety protocols and
practices, safety equipment, and systems provides assurances that required maintenance,
equipment tests, certifications, inspections, reviews, and other activities intended to
maintain laboratory control measures at high performance levels, are accomplished as
required. Skill level and training for at-risk personnel should also be monitored to
provide assurances that a high level of performance is maintained and to ensure the safety
of laboratory personnel. A structured and comprehensive approach to these surveillance
activities can provide an effective tool for sustaining a continuous process of self-
assessment.
Other components of a Readiness Assurance program involve reliable improvement and
lessons-learned programs. Of particular importance for biosafety facilities is a system for
incorporating and tracking lessons learned from internal training, drills, and actual
responses, as well as from external sources. Mutual sharing of lessons-learned among
similar BSL laboratories in DOE/NNSA, academic institutions, and private industry is
expected to increase, as biosafety emergency management becomes a more mature
discipline.
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Other topics such as performance indicators, No-Notice Exercises, and ERAPs are
discussed in detail in the guidance contained in DOE G 151.1-3, Chapter 4.
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6. EMERGENCY MANAGEMENT PROGRAM
FOR BIOSAFETY FACILITIES:
RESPONSE ELEMENTS
The technical details necessary for establishing programmatic activities for developing,
implementing, and maintaining the emerge