DOE O 5480.22, Technical Safety Requirements
Functional areas: Environmental Quality & Impact
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Section 1
Vertical line denotes change.
DISTRIBUTION: INITIATED BY:
All Departmental Elements Assistant Secretary for
Nuclear Energy
U.S. Department of Energy ORDER
Washington, D.C.
2-25-92
Change 1: 9-15-92
Change 2: 1-23-96
SUBJECT: TECHNICAL SAFETY REQUIREMENTS
1. PURPOSE. To clearly state the requirements to have Technical Safety Requirements
(TSR) prepared for Department of Energy (DOE) nuclear facilities and to delineate the
criteria, content, scope, format, approval process, and reporting requirements of these
documents and revisions thereof.
2. CANCELLATIONS.
a. Paragraphs 5h, 7e(4), and 8d of DOE 5480.5, SAFETY OF NUCLEAR
FACILITIES, as of 9-23-86.
b. Paragraphs 5v, 7e(4), and 8d of DOE 5480.6, SAFETY OF DEPARTMENT OF
ENERGY-OWNED NUCLEAR REACTORS, as of 9-23-86.
3. SCOPE. The provisions of this Order apply to all Departmental Elements and to covered
contractors to the extent implemented under a contract or other agreement. A covered
contractor is a seller of supplies or services, involving a DOE-owned or -leased nuclear
facility, under a contract or subcontract containing one of four contract clauses as follows:
(a) Safety and Health (Government-owned or -leased facility) [DEAR 970.5204-2], (b)
Nuclear Facility Safety [DEAR 970.5204-26], (c) Radiation Protection and Nuclear
Criticality [DEAR 952.223-72], or (d) another clause whereby DOE elects to require
compliance with DOE nuclear safety requirements. The provisions of this Order will be
applied to DOE-owned nuclear facilities and operations exempt from Nuclear Regulatory
Commission (NRC) licensing, excluding those facilities and activities conducted under
Executive Order 12344 and Public Law 98-525.
4. EXCLUSIONS.
Director of the Naval Nuclear Propulsion Program: Executive Order 12344, statutorily
prescribed by P.L. 98-525 (42 U.S.C. 7158, Note) establishes the responsibilities and
authorities of the Director of the Naval Nuclear Propulsion Program (who is also the
Deputy Assistant Secretary for Naval Reactors within the Department) for all facilities
and activities that comprise the Program, a joint Navy-DOE organization.
DOE 5480.22
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2 DOE 5480.22
2-25-92
These executive and legislative actions establish that the Director is
responsible for all matters pertaining to naval nuclear propulsion,
including direction and oversight of environment, safety, and health
matters for all program facilities and activities. Accordingly, the
provisions of this order do not apply to the Naval Nuclear Propulsion
Program.
5. REFERENCES.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
DOE 1324.2A, RECORDS DISPOSITION, of 9-13-88, which establishes
the Departmental records disposition program.
DOE 3790.1A, FEDERAL EMPLOYEE OCCUPATIONAL SAFETY AND HEALTH
PROGRAM, of 10-22-84, which establishes the policy and
requirements for the occupational safety and health program for
Federal employees.
DOE 5000.3A, OCCURRENCE REPORTING AND PROCESSING OF OPERATIONS
INFORMATION, of 5-30-90, which establishes reporting of unusual
occurrences with programmatic significance for DOE operations.
DOE 5480.3, SAFETY REQUIREMENTS FOR THE PACKAGING AND
TRANSPORTATION OF HAZARDOUS MATERIALS, HAZARDOUS SUBSTANCES, AND
HAZARDOUS HASTES, of 7-9-85, which establishes the requirements
for packaging and transportation of hazardous materials, hazardous
substances, and hazardous wastes.
Section 2
DOE 5480.5, SAFETY OF NUCLEAR FACILITIES, of 9-23-86, which
establishes DOE’s nonreactor nuclear facility safety program.
DOE 5480.6, SAFETY OF DEPARTMENT OF ENERGY-OWNED NUCLEAR REACTORS,
of 9-23-86, which establishes requirements for a WE reactor
safety program.
DOE 5480.20, PERSONNEL SELECTION, QUALIFICATION, TRAININ6, AND
STAFFING REQUIREMENTS AT DOE REACTOR AND NONREACTOR NUCLEAR
FACILITIES, of 2-20-91, which establishes the selection,
qualifications, training, and staffing requirements for personnel
at Department of Energy-owned nuclear facilities.
DOE 5480.21, UNREVIEWED SAFETY QUESTIONS, of 12-24-91, which sets
forth the definitions and basis for determining the existence of
an Unreviewed Safety Question.
DOE 5481.1B, SAFETY ANALYSIS AND REVIEW SYSTEM, of 9-23-86, which
establishes uniform requirements for the preparation and review of
safety analyses.
Title 10, CFR 50.36, which establishes the Technical
Specifications and requirements for commercial nuclear facilities.
DOE 5480.22
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3
k. NUREG-1431, STANDARD TECHNICAL SPECIFICATIONS FOR WESTINGHOUSE
PLANTS, January 1991, which presents the standard Technical
Specifications for Westinghouse nuclear reactors.
l. ANS-15.1-1982;R90, DEVELOPMENT OF TECHNICAL SPECIFICATIONS FOR
RESEARCH REACTORS, which is the national consensus standard for
the Technical Specification requirements for research reactors.
m. Executive Order 12344, which establishes the responsibilities of
the Director as including the safety of reactors and associated
naval nuclear propulsion plants, the control of radiation and
radioactivity associated with naval nuclear propulsion plants, and
the operating practices and procedures applicable to naval nuclear
propulsion plants.
6. DEF INITIONS.
a.
b.
c.
d.
e.
f.
g.
Category A Reactor Facilities means those production, test, and
research reactors designated by DOE based on power level (e.g.,
design thermal power rating of 20 megawatts steady state and
higher), potential fission product inventory, and experimental
capability.
Category B Reactor Facilities means those test and research
reactors designated by DOE based on power level (e.g., design
thermal power rating of less than 20 megawatts steady state),
potential fission product inventory, and experimental capability.
Certification as stated in DOE 5480.20, chapter I, paragraph 6.
Contractor means any person under contract with the Department of
Energy with responsibility to perform activities in connection
with a nuclear facility.
Controlled Document is a document whose content is maintained
uniform among the copies by an administrative control system.
Hazardou s Materials are those materials that are toxic, explosive,
flammable, corrosive, or otherwise physically or biologically
health threatening.
Nonreactor Nuclear Facility. Those activities or operations that
involve radioactive and/or fissionable materials in such form and
quantity that a nuclear hazard potentially exists to the employees
or the general public. Included are acttvities or operations
that:
(1) Produce, process, or store radioactive liquid or solid
waste, fissionable materials, or tritium;
(2) Conduct separations operations;
4
h.
i.
j.
k.
1.
m.
n.
DOE 5480.22
2-25-92
(3) Conduct irradiated materials inspection, fuel fabrication,
decontamination, or recovery operations;
(4) Conduct fuel enrichment operations; or
(5) Perform environmental remedi ati on or waste management
activities involving radioactive materials.
Section 3
Incidental use and generating of radioactive materials in a
facility operation (e.g., check and calibration sources, use of
radioactive sources in research and experimental and analytical
laboratory activities, electron microscopes, and X-ray machines)
would not ordinarily require the facility to be included in this
definition. Accelerators and reactors and their operations are
not included. The application of any rule to a nonreactor nuclear
facility shall be applied using a graded approach.
Nuclear facility means reactor and nonreactor nuclear facilities.
Program Manager means the Headquarters (HQ) individual, or his
designee appointed by and under the direction of a Program
Secretarial Officer, who is directly involved in the operation of
a facility under his cognizance and who holds signature authority
to provide technical direction through field offices to DOE
contractors for these facilities.
Program Secretarial Officer (PSO) means the heads of DOE offices
with responsibility for specific facilities. These include the
Assistant Secretaries for Conservation and Renewable Energy,
Nuclear Energy, Defense Programs, Environmental Restoration and
Waste Management and, Fossil Energy, and the Directors of Energy
Research, Civilian Radioactive Waste Management, and New
Production Reactors.
Reactor Operator is as stated in DOE 5480.20, (page 5, paragraph
6.s).
Risk is quantitative or qualitative expression of possible loss
that considers both the probability that a hazard will cause harm
and the consequences of that event.
Safety Analvs is means documented processes: (1) to provide
systematic identification of hazards within a given DOE operation,
(2) to describe and analyze the adequacy of the measures taken to
eliminate, control, or mitigate identified hazards; and (3) to
analyze and evaluate potential accidents and their associated
risks.
Safety Analysis Repo tr (SAR) means that report which documents the
adequacy of safety analysis for a nuclear facility to ensure that
the facility can be constructed, operated, maintained, shut down,
DOE 5480.22
2-25-92
5
and decommissioned safely and in compliance with applicable laws
and regulations.
o. Senior Reactor Operator is as stated in DOE 5480.20, (page 5,
paragraph 6.i)
p. Technical Safety Requ irements (TSRs) means those requirements that
define the conditions, safe boundaries, and the management or
administrative controls necessary to ensure the safe operation of
a nuclear facility and to reduce the potential risk to the public
and facility workers from uncontrolled releases of radioactive
materials or from radiation exposures due to inadvertent
criticality. A TSR consists of safety limits, operating limits,
surveillance requirements, administrative controls, use and
application instructions, and the basis thereof. TSRs were
formerly known as Operational Safety Requirements for nonreactor
nuclear facilities and Technical Specifications for reactor
facilities.
q. Unreviewed Safety Questions. A determination made by examining
the following circumstances:
(1) Temporary or permanent changes in the facility as described
in existing safety analyses;
(2) Temporary or permanent changes in the procedures as derived
from existing safety analyses; and
(3) Tests or experiments not described in existing safety
analyses.
On identification of any of the above circumstances, an Unreviewed
Safety Question exists if one or more of the following conditions
result:
Section 4
(1) The probability of occurrence or the consequences of an
accident or malfunction of equipment Important to safety as
previously evaluated in the facility safety analyses could
be increased;
(2) The possibility for an accident or malfunction of a
different type than any evaluated previously in the facility
safety analyses could be created; and
(3) Any margin of safety as defined in the bases of the
Technical Safety Requirements could be reduced.
7. Policy. It is the policy of the Department that nuclear facilities
operate within PSO-approvee Technical Safety Requirements which
prescribe the bounds for safe operation of these facilities in order to
protect the health and safety of the public and reduce risk to workers.,
6
8.
DOE 5480.22
2-25-92
RESPONSIBI LITIES AND AUTHORITIES
a. Program Secretarial Officers (PSOs) shall carry out
responsibilities for facilities under their program jurisdiction
that include, but are not limited to, the following:
(1) Require preparation of Technical Safety Requirements for all
nuclear facilities, unless for a particular facility, based
upon safely analysis, the PSO determines that a TSR would
not be appropriate for that particular facility. In the
case of such a determination, the requirements of this Order
do not apply.
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
Grant temporary exemptions for up to one year from the
provisions of this Order after notifying the Secretary.
Request the Secretary grant permanent exemptions from this
Order after concurrence from the Assistant Secretary for
Nuclear Energy, Assistant Secretary for Environment, Safety
and Health, and/or the Director, Office of Nuclear Safety,
as appropriate.
Issue a directive that shall delineate the flow of TSR or
TSR change submittals from the contractor through the line
and review, approval, and concurrence responsibilities.
Review and approve schedules for preparing new Technical
Safety Requirements in accordance with this Order.
Review and approve new Technical Safety Requirements and
revisions thereto for all nuclear facilitates.
Provide guidance and assistance to field organizations in
the performance of safety reviews, appraisals, and the
preparation of Technical Safety Requirements.
Conduct appraisals to assure compliance with this Order.
Direct the line to transmit the results of the actions taken
under subparagraphs (3), (4), (5), and (7) to the
responsible program managers and field organizations with
any necessary appropriate instruction as to subsequent
action to be taken. Copies of these documents shall be
forwarded to the Director, Office of Nuclear Safety and the
Office of Environment, Safety and Health according to the
respective issues (nuclear versus nonnuclear and
occupational safety and health) being addressed.
(10) Designate an individual (s) to be responsible for bringing to
the attention of the contracting officer each procurement
falling within the scope of this Order. Unless another
DOE 5480.22
2-25-92
b.
7
individual is designated, the responsibility is that of the
procurement request originator (the individual responsible
for initiating a requirement on DOE F 4200.33).
(a)
(b)
Procurement Request Originators (the individuals
responsible for initiating a requirement on DOE F
4200.33) or such other individuals(s) as designated by
the cognizant PSO shall bring to the attention of the
cognizant contracting officer the following: (1) each
procurement requiring the application of this Order,
(2) requirements for flowdown of provisions of this
Order to any subcontract or subaward, and (3)
identification of the paragraphs or other portions of
this Order with which the awardee, or if different, a
subawardee, is to comply.
Section 5
Contracting Officers , based on advice received from
the procurement request originator or other designated
individual, shall apply applicable provisions of this
Order to awards falling within its scope. For awards,
other than management and operating contracts, this
shall be by incorporation or reference using explicit
language in a contractual action, usually bilateral.
All paragraphs of this Order shall be applied to
contractors excluding paragraph 7.
Heads of Field Offices shall carry out responsibilities that
include, but are not limited to, the following:
(1) Review all new Technical Safety Requirements and revisions
to Technical Safety Requirements submitted by contractors
under their cognizance and take review responsibilities as
directed by the cognizant PSO.
(2) Take such action as may be appropriate, including
curtailment and suspension of operations, when, in their
opinion, such operations may result in an undue risk to
health, safety, or the environment.
(3) Provide the PSO (with a copy to NS-1 and EH-1) appropriate
safety documentation (e.g, Implementation Schedules,
Technical Safety Requirements, and Technical Safety
Requirements Change Requests) to permit those organizations
to meet responsibilities as outlined in this Order as
directed by the PSO.
(4) Assure that applicable DOE contractors implement the
requirements of this Order and provide advisory services to
DOE contractors on matters involving policies, standards,
codes, guides, and procedures which relate to the
requirements of this Order as directed by the PSO.
DOE 5480.228
2-25-92
(5) Designate an individual(s) to be responsible for bringing to
the attention of the contracting officer each procurement
falling within the scope of this Order. Unless another
individual is designated, the responsibility is that of the
procurement request originator (the individual responsible
for initiating a requirement on DOE F 4200.33).
(a) Procurement request originators (the individuals
responsible for initiating a requirement on DOE F
4200.33) or such other individuals(s) as designated by
the cognizant heads of field organizations shall bring
to the attention of the cognizant contracting officer
the following: (1) each procurement requiring the
application of this Order, (2) requirements for
flowdown of provisions of this Order to any sub-
contract or sub-award, and (3) identification of the
paragraphs or other portions of this Order with which
the awardee, or, if different, a sub-awardee, is to
comply.
(b) Contracting officers based on advice received from the
procurement request originator or other designated
individual, shall apply applicable provisions of this
Order to awards falling within its scope. For awards,
other than management and operating contracts, this
shall be by incorporation or reference using explicit
language in a contractual action, usually bilateral.
All paragraphs of this Order shall be applied to
contractors excluding paragraph 7.
c. The Director, Office of Nuclear Safety (NS-1) acting as the
independent element responsible for nuclear safety oversight of
line management for the Department, shall:
(1)
(2)
(3)
(4)
(5)
Monitor and audit the implementation of all aspects of this
Order related to nuclear safety, including field
organization and contractor performance;
Review documentation such as Technical Safety Appraisals,
Safety Analysis Reports (SARs), implementation schedules,
TSRs, program office and onsite reports, and observe on-site
activities;
Section 6
Identify circumstances that are indicative of deteriorating
or poor performance that may warrant further action;.
Review and concur in the Department’s nuclear safety policy;
and
Concur with requests for permanent exemptions from the
requirements of this Order.
DOE 5480.22
2-25-92
d.
9
Assistant Secretary for Environment, Safety and Health (EH-1),
acting as the independent element responsible for nonnuclear
safety oversight of line management for the Department, which
includes issues related to environment, radiation protection,
industrial hygiene, uncontrolled releases of nonradioactive
hazardous materials, occupational safety and health shall:
(1) Monitor and audit all aspects of the implementation of this
Order related to EH functional areas of responsibility
including field organization and contractor performance;
(2) Review documentation and observe on-site activities and
identify circumstances indicative of poor performance that
may warrant further action; and
(3) Concur with requests for permanent exemptions from the
requirements of this Order within their areas of
responsibility.
9. TECHNICAL SAFETY REQUIREMENTS.
a. A contractor responsible for the operation of a DOE nuclear
facility shall:
(1) prepare Technical Safety Requirements for the
facility;
(2) submit the Technical Safety Requirements to the PSO for
approval; and
(3) operate the facility in accordance with the Technical Safety
Requirements as approved by the PSO including any
modification by the PSO;
b. Technical Safety Requirements shall define the operating limits
and surveillance requirements, the basis thereof, safety
boundaries, and management or administrative controls necessary to
protect the health and safety of the public and to minimize the
potential risk to workers from the uncontrolled release of
radioactive or other hazardous materials and from radiation
exposure due to inadvertent criticality. Technical Safety
Requirements shall be based on the facility Safety Analysis Report
and shall set forth specific limits and other requirements as
specified in this Order and Attachment 1 to this Order,
Guidelines for Technical Safety Requirements.n Attachment 1
presents an approach for the implementation and preparation of
Technical Safety Requirements documents which is acceptable to
DOE. Other approaches that are compatible with Attachment 1 may
be utilized providing that they are justified and approved in
writing by the PSO.
10 DOE 5480.22
c.
d.
e.
2-25-92
The TSR and its appendices constitute an agreement or contract
between DOE and the facility operating management regarding the
safe operation of the facility. As such, they cannot be changed
without PSO approval.
TSRs should be written in a clear and concise manner, in language
that is directed at and clearly understandable by those in the
facility operating organization. The TSR should not contain
excessive details that are more appropriate to the Safety Analysis
Report.
Technical Safety Requirements shall consist of the following:
(1) Use and Application. Definitions of terms, operating modes,
frequency notations, and actins to be taken in th eevent of
violation of Technical Safety Requirements operating limits
or surveillance requirements are to be included in the Use
and Application section. This section of the Technical
Safety Requirements shall contain the basic instructions for
using and applying the safety restriction contained in the
Technical Safety Requirements.
Section 7
(2) Safety Limits (SL). Safety Limits are limits on process
variables associated with those physical barriers, generally
passive, that are necessary for the intended facility
function and which are found to be required to guard against
the uncontrolled release of radioactivity and other
hazardous materials (this includes releases into the complex
and/or the community). If any Safety Limit is exceeded at
any reactor or nonreactor nuclear facility, action shall
begin immediately to place the facility in the most stable,
safe condition attainable including total shutdown of either
reactor or nonreactor nuclear facilities. The appropriate
time frame for the completion of the action for each nuclear
facility has to be developed and justified by the
contractor, as appropriate, in the TSR document which
requires PSO approval. The Sls shall describe the action to
be taken when an SL is exceeded. If a SL is exceeded, the
contractor shall notify DOE in accordance with DOE 5000.3A,
review the matter, and record the results of the review.
The review shall include the cause of the condition and the
basis for any corrective actions taken to preclude
reoccurrence. The safe, stable condition entered as
corrective action shall be maintained until the cognizant
Program Manager authorizes further operations.
(3) Operating Limits
(a) Limiting Control Settings (LCS). Limiting Control
Settings are settings on safety systems that control
process variables to prevent exceeding Safety Limits.
11DOE 5480.22
2-25-92
(4)
(b)
This subsection of the Technical Safety Requirements
shall contain the settings for automatic alarms and
automatic or non-automatic initiation of protective
actions related to those variables having significant
safety functions. The specific settings shall be
chosen such that if exceeded, sufficient time is
available to automatically or manually correct the
condition prior to exceeding Safety Limits. If the
automatic alarms or protective devices do not function
as required during applicable operating modes, the
contractor shall take action as defined in the
Limiting Control Setting to maintain the variables
within the requirements and to promptly repair the
automatic devices or the affected part of the process
or, if required, the facility shall be placed in its
most safe, stable condition. The LCS shall describe
the action to be taken in case of exceedance of LCS.
If an LCS is exceeded, the contractor shall notify DOE
in accordance with DOE 5000.3A, review the matter, and
record the results of the review including the cause
of the condition and the basis for any corrective
actions taken to preclude reoccurrence.
Limiting Conditions for Operatlon
l (LCO). Limiting
Conditions for Operation are the lowest functional
capability or performance level of safety-related
structures, systems, component and their support
systems required for normal safe operation of the
facility. This subsection of the TSR shall contain
the limits on functional capability or performance
level. When a Limiting Condition for Operation is not
met, the contractor shall take remedial actions
defined by the Technical Safety Requirements until the
condition can be met. The LCO shall describe the
action to be taken in case of exceedance of the LCO.
In cases of exceedance of an LCO, the contractor shall
notify DOE in accordance with DOE 5000.3A, review the
matter, and record the results of the review including
the cause of the condition and the basis for any
corrective actions taken to preclude reoccurrence.
Section 8
Surveillance Requirements. Surveillance Requirements are
requirements relating to test, calibration, or inspection to
ensure that the necessary operability and quality of safety-
related structures, systems, components, and their support
systems required for safe operation of the facility are
maintained. This section of the Technical Safety
Requirements shall contain the requirements necessary to
maintain operation of the facility within the Safety Limits,
Limiting Control Settings, and Limiting Conditions for
Operations. In the event that Surveillance Requirements are
12 DOE 5480.22
2-25-92
(5)
not successfully completed or accomplished within their
required frequency, the systems or components involved shall
be assumed to be inoperative and actions defined by the
Limiting Condition for Operation or Limiting Control Setting
shall be taken until the systems or components can be shown
to be operable.
Administrative Controls. Administrative Controls are the
provisions relating to organization and management,
procedures, recordkeeping, reviews, and audits necessary to
ensure safe operation of the facility. This section of the
Technical Safety Requirements shall contain the requirements
associated with Administrative Controls including those for
reporting deviations from Technical Safety Requirements
(i. e., exceedances of LCO, LCS, or SR, or violation of TSR).
Staffing requirements for facility position important to
safe operation of the facility shall be provided in the
Administrative Controls sections. Physical and
administrative controls of the criticality safety program
shall also be provided in the Administration Controls
section.
(6) Appendices. The following information shall be in the
Appendices:
(a) Basis. This Appendix shall provide summary statements
of the reasons for the operating limits and associated
surveillance requirements. The basis shall show how
the numeric value, the condition, or the surveillance
does fulfill the purpose derived from the safety
documentation. The primary purpose for describing the
basis for each requirement will not affect its
original intent or purpose.
(b) Design Features. This Appendix shall describe passive
design features of the facility which, if altered or
modified, would have a significant effect on safe
operation. If Design Features are in a DOE-approved
Safety Analysis Report, this Appendix is not required.
f. The TSR shall be kept current at all times so that it reflects the
facility as it exists and as it is analyzed in Safety Analysis
Reports. Contractors shall determine whether revisions to the
Technical Safety Requirements are required upon originating or
proposing a revision to a Safety Analysis Report, and, if SO,
shall prepare revisions and submit them with their basis for PSO
approval concurrent with the revisions to the Safety Analysis
Report. The TSR must be approved prior to facility or facility
practice change. To assure that the TSR is current, it shall be
reviewed at least annually along with the facility Safety Analysis
Report.
DOE 5480.22 Chg 2 13
1-23-96
g. All proposed revisions to Technical Safety Requirements or its Appendices shall
be submitted for PSO approval. Such submittals shall include the basis for the
proposed revision. Revision implementation shall occur only after PSO approval.
h. Only the current PSO-approved Technical Safety Requirements shall be used for
the operation of the facility. The current PSO- approved Technical Safety
Requirements shall be a controlled document.
Section 9
i. A contractor may take emergency actions that depart from the approved Technical
Safety Requirements when no actions consistent with the Technical Safety
Requirements are immediately apparent, and when these actions are needed to
protect the public health and safety. Such contractor actions shall be approved, as
a minimum, by a certified operator or supervisor certified on that system through
an accredited training program. If emergency actions are taken, verbal
notifications shall be made to the Head of the Field Element within 2 hours and by
written reports to the PSO within 24 hours.
10. IMPLEMENTATION.
a. For new facilities, the contractor shall submit a draft Technical Safety
Requirements document with its appendices to the PSO for approval. PSO
approval of the Technical Safety Requirements document shall be obtained prior
to operation.
b. For existing facilities that do not have DOE approved Technical Specifications or
Operational Safety Requirements, the contractor shall submit for approval a
schedule for the development and delivery of a draft Technical Safety
Requirements document and its appendices that satisfy the requirements of this
Order. This schedule shall be submitted to the PSO for approval by August 25,
1992. This submittal shall include the basis for the content, schedule, and level of
detail proposed, basis for interim operation or restrictions on interim operations,
and administrative controls during the upgrade process. Once a submitted plan
and schedule is approved by the PSO, the contractor shall comply with the plan
and schedule including any modifications made by the PSO. Unless approved by
the PSO earlier, the plan and schedule submitted by a contractor, as modified or
directed to be modified by the PSO, shall be considered to be approved 180 days
after submittal. Approved plans and schedules may be changed, but such changes
must be approved in the same manner as initial plans and schedules.
c. For existing facilities that have DOE-approved Technical Specifications or
Operational Safety Requirements, a review shall be conducted by the contractor to
compare these documents with the provisions of this Order and its related
guidance, Attachment 1.
Vertical line denotes change.
14 DOE 5480.22 Chg 2
1-23-96
(1) If the existing Technical Specifications or Operational Safety
Requirements comply with the provisions of this Order and guidance,
except for format, the contractor shall submit a statement to the PSO
stipulating to that fact by August 25, 1992. A copy of the existing
documents shall accompany the statement. The PSO shall review this
statement for approval. A schedule shall be submitted to the PSO for the
conversion of the existing Technical Specifications or Operational Safety
Requirements to Technical Safety Requirements (i.e., reprinting, changing
references in procedures, etc.). Unless approved by the PSO earlier, the
statement and schedule submitted by the contractor, as modified or
directed to be modified by the PSO, shall be considered to be approved
180 days after submittal. Approved statements and schedules may be
changed but such changes must be approved in the same manner as initial
statements and schedules. The existing Technical Specifications or
Operational Safety Requirements shall be converted to Technical Safety
Requirements (i.e., reprinting, changing references in procedures, etc.)
when revisions are made to the documents.
Section 10
During the interim period until the revised
Technical Safety Requirements are approved by the PSO, the existing
Technical Specifications or Operational Safety Requirements or subset
thereof shall be treated as DOE-approved Technical Safety Requirements
for purposes of this Order.
(2) If the existing Technical Specification or Operational Safety Requirements
do not comply with the provisions of this Order and guidance (Attachment
1), the contractor shall provide a plan and schedule for making the
revisions necessary to bring the document into compliance. The schedule
shall be submitted to the PSO for approval by August 25, 1992. This
submittal shall describe the need for upgrading the TS or OSR and shall
include the basis for the content, schedule, and level of detail proposed,
Vertical line denotes change.
DOE 5480.22 Chg 2 15 (and 16)
1-23-96
basis for interim operation or restrictions on interim operations, and
administrative controls during the upgrade process. Once a submitted plan
and schedule is approved by the PSO, the contractor shall comply with the
plan and schedule including any modifications by the PSO. Unless
approved by the PSO earlier, the plan and schedule submitted by a
contractor, as modified or directed to be modified by the PSO, shall be
considered to be approved 180 days after submittal. Approved plans and
schedules may be changed, but such changes must be approved in the
same manner as the initial plans and schedules.
JAMES D. WATKINS
Admiral, U.S. Navy (Retired)
Vertical line denotes change.
DOE 5480.22 Page i (and ii)
2-25-92
Attachment 1
GUIDELINES FOR TECHNICAL SAFETY REQUIREMENTS
DOE 5480.22 Attachment 1
Page iii2-25-92
TABLE OF CONTENTS
Attachment 1
Page iv DOE 5480.22
2-25-92
DOE 5480.22
2-25-92
List of Figures
Attachment 1
Page v
Attachment 1
Page vi
DOE 5480.22
2-25-92
List of Acronyms
ANSI - American National Standards Institute
ASME - American Society of Mechanical Engineers
Limiting Conditions for Operation
Limiting Control Setting
Operating Limit
Operational Safety Requirements
Program Manager
Personnel Protective Clothing and Equipment
Program Secretarial Officer
Safety Analysis Report
Safety Limit
Surveillance Requirements
Technical Specifications
Technical Safety Requirements
CERCLA- Comprehensive Environmental Response, Compensation, and Liability Act
LCO -
LCS -
OL -
OSR -
PM -
PPE -
PSO -
SAR -
SL -
SR -
TS -
TSR -
USNRC - United States Nuclear Regulatory Commission
USQ - Unresolved Safety Question
DOE 5480.22 Attachment 1
2-25-92 Page 1
BACKGROUND
The following discussion addresses general topics associated with the
development, use, and philosophy of Technical Safety Requirements (TSR). This
information is supplied to provide the user of this Guide with background
information to allow for better utilization of this Guide.
Section 11
1. Source Documents for the TSR. In the development of setpoints, limits,
staffing requirements, and other parameters for input into the TSR, the
site-specific Safety Analysis Report (SAR), and especially the safety
analyses contained therein, is to serve as the source document. The
requirements that are to be included in TSRs should be derived from these
site-specific safety analyses, which consider all credible accidents
(generally termed design basis accidents) including the most significant
possible releases of radioactive and other hazardous materials,
criticality scenarios, and the accidental releases expected during the
lifetime of the facility. Careful and thorough examination of the
accident analyses will yield values for defining the operational limits
necessary to assure that facility operation does not occur outside the
bounds assumed in the analyses. Such an examination will also identify
parameters and operating conditions that should be limited in order to
reduce, provide warning of, and mitigate the uncontrolled release of
hazardous materials and to prevent inadvertent criticality. Examples of
requirements expected to be developed include: operating limits for
principal process parameters, technical and administrative conditions
that must be met, availability of safety equipment and systems, and
critical functions of instrumentation and controls. Operation within the
bounds of the resulting requirements will provide reasonable assurance
that the nuclear facility will not threaten the health and safety of the
public or pose an undue risk to workers from uncontrolled releases of
radioactive or other hazardous materials and inadvertent criticality.
For facilities that do not have a Department of Energy (DOE)-approved
SAR, the technical input into the TSR may be derived from existing
documents/analyses that specifically demonstrate the limiting conditions
that the facility is expected to experience during normal operation and
upset conditions. In order to serve as the basis for the TSR, these
documents/analyses must systematically evaluate: a) all potential off-
normal conditions that are expected to occur during the life of the
facility and (b) what could be considered design basis accidents.
In areas that the SAR does not directly supply all of the input for the
TSR, such as surveillance intervals and acceptance criteria, national and
international codes, standards, and guides are to be used wherever
possible. Use of a value less conservative than that expressed in
applicable codes, standards, and guides should be justified in the SAR.
Where codes, standards, and guides conflict, the selection of a
particular code, standard, or guide to follow should be justified;
normally the most conservative should be selected. Where no code,
standard, or guide is applicable, other documents, such as risk
assessments and manufacturer documentation, may serve as a basis; a
Attachment 1 DOE 5480.22
Page 2 2-25-92
justification should be placed in the SAR. The sources of TSR
information for the SAR are shown in Figure 1.
2. Violation of TSR. Violations of the TSR occur as the result of four
circumstances:
(a) Exceeding a Safety Limit (SL);
(b) Failure to take the actions required within the required time limit
following: (1) exceeding a Limiting Control Setting (LCS), (2)
failure to meet Limiting Conditions for Operation (LCO), or (3)
failure to successfully meet a Surveillance Requirement (SR);
Section 12
(c) Failure to perform a surveillance within the required time limit;
and
(d) Failure to comply with an Administrative Control requirement.
For subparagraph (2b) above, it iS important to note that the violation
relates to failure to comply with an Action Statement. The actions
required to be taken when LCS are exceeded or when operations outside an
LCO occur are intended to provide compensatory protection for the same
safety concerns for which the limit was established. Thus, exceeding the
limit, by itself, is not considered a violation but is a reportable event
as an off-normal occurrence (DOE 5000.3A, Attachment 1, page 4, Group
1C).
Reporting TSR violations to DOE must be done in accordance with DOE
5000.3A. other reporting requirements, such as entering an LCO Action
Statement, must be listed and discussed in Section 5, “Administrative
Controls.”
3. Conditions Outside TSR In an emergency, if a situation develops that is
not addressed by the TSR, site personnel are expected to use their
training and expertise to take actions to correct or mitigate the
situation. Also, site personnel may take actions that depart from a
requirement in the TSR provided that: (a) an emergency situation exists;
(b) these actions are needed immediately to protect the public health and
safety; and (c) no action consistent with the TSR can provide adequate or
equivalent protection. Such action must be approved minimally by an
operator or supervisor who is certified on the system or reactor through
a DOE-accredited training program. If emergency action iS taken, both a
verbal notification shall be made to the responsible Head of the Field
Element and a written report made to the Program Secretarial Officer
(PSO) within 24 hours.
Attachment 1 DOE 5480.22
Page 4 2-25-92
4. Administrative Control of TSR. The facility must be operated in
accordance with the provisions of a current DOE-approved TSR. In order
to ensure this is the case, the TSR and its appendices must be an
administratively controlled document so that only current copies of the
DOE-approved TSR are used for operation of the facility. Making the TSR
controlled involves establishing a list of the copies of the TSR that
serve as “official” copies, then instituting a formal process of issuing
and distributing the copies as well as installing DOE-approved changes in
them.
5. Requirement to Update TSR. No changes may be made to the TSR until they
have been approved by the PSO. The TSR is to be a living document, that
is, it is to be updated prior to changes to the facility, the way the
facility is operated, or the facility’s Safety Analyses. Operating with
an outdated TSR is prohibited. Should a discrepancy between the facility
and the TSR be discovered, it must be reported to DOE in accordance with
DOE 5000.3A, an evaluation must be performed to determine if an
Unreviewed Safety Question exists per DOE 5480.21, and the discrepancy
must be resolved in an expeditious manner.
Section 13
6. Worker Safety. DOE’s first safety responsibility must be the protection
of the public. Those who work at DOE facilities accept some risk of
exposure to radioactive and other hazardous materials due to the nature
of the materials with which the facilities operate. Nevertheless, it is
incumbent upon DOE to assure that its facilities are operated in a manner
that minimizes the risk to workers and limits exposures to hazardous
materials to levels permitted by Federal or State regulations and
relevant DOE Orders. The TSRs, by requiring the facilities to operate
within predetermined safety limits, not only protect the public health
and safety and that of nearby workers but also inherently reduce the risk
to workers and facilities. The TSRs are not based upon maintaining
worker exposures below some acceptable level following an uncontrolled
release of hazardous material or inadvertent criticality; rather the risk
to workers is reduced through the reduction of the likelihood and
potential impact of such events. This is accomplished by the development
of safety requirements in the TSR for those systems, components, and
equipment that: (a) are barriers preventing the uncontrolled release of
radioactive and other hazardous materials; (b) mitigate such releases;
and (c) prevent inadvertent criticality. It should be noted that the
impact from the release of hazardous materials is also reduced through
industrial hygiene and radiation protection oversight (e.g., monitoring
of worker exposures, use of personal protective clothing and equipment
(PPE) and emergency evacuation planning), as well as the use of TSRs.
Consistent with relevant DOE Orders, the control of the levels of
hazardous materials to which workers may, at any time, be exposed is
addressed in each facilities’ safety and health programs. These programs
are required by reference in the Administrative Control Section of the
TSR.
Because of the necessary and inherent presence of hazardous and
radioactive materials at DOE nuclear facilities and the workers’
DOE 5480 l 22 Attachment 1
2-25-92 Page 5
proximity to these materials, it is impractical to reduce worker risk to
an insignificant level through selection of operating limits in TSRs.
The protection of the health and safety of workers is assured by the
combination of: (a) the development of TSRs for barriers to uncontrolled
releases and for preventative and mitigative systems, components, and
equipment; (b) use of PPE; (c) emergency protection programs; (d) worker
education; and (e) drills.
7. Size and Complexity of TSR Category A reactors and highly hazardous
nonreactor nuclear facilities are expected to have far more extensive
TSRs than other facilities, even though the documents were developed with
the same starting point criteria. This is because Category A reactors
and highly hazardous nonreactor nuclear facilities usually require a
greater number of limits on operation and a larger number of safety-
related systems for which limits must be established. The number and
complexity of the systems needed to maintain an acceptable level of risk
will result in comparably complex TSRs. TSRs are developed primarily to
detect indications of potential failure of engineered systems, to
demonstrate operability of such systems, and to provide actions in the
event that such systems become inoperable. Some DOE nonreactor nuclear
operations have very limited or no engineered systems; safety control of
these operations would be through worker protection programs and/or
environmental protection programs rather than TSRs. An example of this
kind of operation could be an environmental restoration project involving
cleanup of radioactive contamination.
Section 14
The scope and content of TSRs have been limited to include only the most
critical nuclear safety areas in order to make TSR documents more
operationally useful for controlling facility safety. The TSR should be
written in a clear, concise manner using language that iS directed at the
facility-operating organization.
8. Regulatory Authority Note. Release of hazardous materials is regulated
under the provisions of the Resource Conservation Recovery Act (RCRA) and
the Comprehensive Environmental Response, Compensation, and Liability Act
(CERCLA) as authorized by the Superfund Amendments and Reauthorization
Act (SARA) . Worker exposure to hazardous materials and/or conditions is
regulated under the provisions of the Occupational Safety and Health Act
Administered by the occupational Safety and Health Administration (OSHA).
Compliance with applicable Federal and State regulatory requirements is
necessary in addition to compliance with TSR document limits.
Attachment 1
Page 6
DOE 5480.22
2-25-92
I. INTRODUCTION
This document iS intended to give guidance to DOE contractors on the
preparation and implementation of TSRs for DOE reactor and nonreactor nuclear
facilities, and to provide a basis upon which DOE can approve TSRs submitted
by contractors. The contents of this document constitute an approach
acceptable to DOE. Other approaches may be used, provided PSO approval is
obtained, and the specific requirements of DOE 5480.22 are met.
In the interest of uniformity, contractors are encouraged to follow the format
presented in this document. Justification will be required before a TSR in a
format different from that presented here is approved by DOE.
Existing Technical Specifications/Operational Safety Requirements (TS/OSRs)
must be revised to meet the content requirements in DOE 5480.22. The format
of the TS/OSR is to be brought into conformance with the revised content and
format presented in this document in accordance with the PSO's agreed upon
schedule.
Nonreactor nuclear facilities may develop a TSR document for an entire
facility or the facility may be divided according to process, with a separate
segment of the TSR generated for each process. In any case, every portion of
the facility that contains radioactive or other hazardous material in
sufficient quantities to adversely impact the health and safety of the public
or pose a risk to workers must be covered by the TSR.
Reactor facilities are expected to develop a single TSR document for the
entire reactor facility. Every portion of the facility that contains
radioactive or other hazardous material in sufficient quantities to adversely
impact the health and safety of the public or pose a risk to workers must be
covered by the TSR.
DOE 5480.22 Attachment 1
2-25-92 Page 7
II. PREPARATION OF TECHNICAL SAFETY REQUIREMENTS
This section presents material to assist in the preparation of TSR for DOE
reactor and nonreactor nuclear facilities. It is divided into four parts:
Organization, Content, Format, and Examples.
The Organization part presents the basic organization required by this Order
along with some details to assist in unifying the document. Content of the
TSR is the second part, which discusses in detail what is expected to be in
each of the sections of the TSR. The third part is a detailed presentation of
TSR format from how to number pages to layout of the requirements themselves.
Examples are embedded in the document to illustrate various parts of a TSR.
1. Organization
Section 15
1.1 Front Matter. Front matter should consist of at least the
following items:
a.
b.
c.
d.
e.
Title page should include at least: name of the reactor
or nonreactor nuclear facility, location, the words
“Technical Safety Requirements,” and the contractor
responsible.
The Table of Contents should list every item in the volume
(see Figure 2 for a reactor facility example and Figure
for a nonreactor nuclear facility example).
A List of Tables should be included (see Figure 4 for a
reactor facility example and Figure 5 for a nonreactor
nuclear facility example).
A List of Figures should be included (see Figure 6 for a
reactor facility example and Figure 7 for a nonreactor
nuclear facility example).
A List of Acronyms l, bbreviations, and Svmbols should be
3
compiled and included.
1.2 Arrangement of Sections. The arrangement of sections should be
in accordance with the following:
a. Section 1 - Use and Application
b. Section 2 - Safety Limits
c. Section 3/4 - Operational Limits and Surveillance
Requirements
Attachment 1 DOE 5480.22
Page 8 2-25-92
TABLE OF CONTENTS
Paragraph Page
Section 1 Use and Application
1.1 DEFINITIONS
1.2 OPERATIONAL MODES
1.3 FREQUENCY NOTATIONS
1.3.1 Frequency Codes
1.4 MODE APPLICAB1LITY SUMMARY
1.5
1.6
1.7
Section 2
2.1
2.2
2.3
Section 3/4
LIMITING CONDITIONS FOR OPERATIONS (LCO)
ACTION REQUIREMENTS
SURVEILLANCE REQUIREMENTS
Safety Limits
POWER LIMITS
PRESSURE LIMITS
TEMPERATURE LIMITS
Operational Limits and Surveillance
Requirements
GENERAL APPLICATION
REACTIVITY CONTROL SYSTEMS
3.0
3.1
3.1.1 Control Bank Insertion Limits
3.1.2 Core Reactivity
3.2 INSTRUMENTATION
•
Ž
Figure 2 Example Table of Contents for a Nuclear
Reactor Facility TSR
DOE 5480.22 Attachment 1
2-25-92 Page 9
TABLE OF CONTENTS
Paragraph Page
Section 1 Use and Application
1.1 DEFINITIONS
1.2 OPERATIONAL MODES
1.3 FREQUENCY NOTATIONS
1.3.1 Frequency Codes
1.4 MODE APPLICABILITY SUMMARY
1.5 LIMITING CONDITIONS FOR OPERATIONS (LCO)
1.6 ACTION REQUIREMENTS
1.7 SURVEILLANCE REQUIREMENTS
Section 2 Safety Limits
2.1 FISSILE MATERIAL
Section 3/4 Operational Limits and Surveillance
Requirements
3.0 GENERAL APPLICATION
3.1 CRITICALITY, RADIOACTIVITY, AND CHEMICAL
ALARM SYSTEMS
3.1.1 Criticality Alarms
3.1.2 Area Monitors
3.1.3 Chemical Alarm Systems
3.2 VENTILATION SYSTEMS
3.2.1 HEPA Filters
3.2.2 Fire Screens
•
•
•
Figure 3 Example Table of Contents for a Nonreactor
Nuclear Facility TSR
Attachment 1 DOE 5480.22
Page 1O 2-25-92
LIST OF TABLES
Table No.
2-1
2.2-1
Page
3.3-1
3.4-1
4.3-1
Title
Reactor Core Safety Limits
Decay Heat Removal Rate Versus
Shutdown Time
Control Rod Withdrawal Limits
Versus Mode
Maximum Power Level Versus Primary
Pump Configuration
Control Rod Surveillances
Figure 4 Example List of Tables for a Nuclear Reactor
Facility TSR
Table No.
3-1
LIST OF TABLES
Title
Limiting Control Settings
Page
3.3-1 Criticality, Radioactivity, and Chemical
Alarm Sensors
3.4-1
4.3-1
Fire Detection Sensor
Criticality Alarm Surveillances
Figure 5 Example List of Tables for a Nonreactor Nuclear
Facility TSR
DOE 5480.22 Attachment 1
2-25-92 Page 11
Figure No.
3-1
3.3-1
3.4-1
LIST OF FIGURES
Title Page
Maximum Vessel Pressure Versus Metal Temperature
Maximum Control Rod Withdrawal Versus Power
Minimum Reactor Coolant Flow Versus Power
Figure 6 Example List of Figures for a Nuclear Reactor
Facility TSR
Figure No. Page
3.371
3.4-1
LIST OF FIGURES
Title
Section 16
Location of Criticality Alarm Sensors
Location of Fire Detection Sensors
Figure 7 Example List of Figures for a Nonreactor
Nuclear Facility TSR
Attachment 1
Page 12
DOE 5480.22
2-25-92
Note that Section 3 is Operational Limits, and
Section 4 is Surveillance Requirements. Surveillance
Requirements are established to demonstrate and
assure that the Operational Limits are met. These
two sections are thus intimately related. They are
presented together in the text of the TSR document
because of this relationship. Such presentation
makes it easier to assure that Surveillance
Requirements are appropriate for the related
Operational Limits.
d. Section 5 - Administrative Controls
1.3 Cover Page. Each section should have a cover page that has the
section number and the title centered on the page.
1.4 Appendices. Appendices should be placed at the end of the
document. They should be designated as Appendix A, Appendix B,
etc., and should have a cover page with the letter designation
and title. The appendix that contains the TSR bases should be
Appendix A and the Design Features Appendix should be Appendix
B. Other appendices should be designated alphabetically
beginning with Appendix C.
2. Content. The content of each section of the TSR is described in the
following paragraphs.
2.1 Section 1 - Use and Application This section should contain
basic information and instructions for using and applying the
TSR. The following elements should be addressed under separate
headings in this section:
a. Definition Provide a list of defined terms and
corresponding definitions as used throughout the TSR.
Arrange the defined terms in alphabetical order and in
tabular form as shown in Figure 8. Include a note at the
beginning of the list stating that defined terms appear
in upper-case type throughout the TSR.
b. Operational Modes (Reactors). In the interest of
uniformity, the operational conditions or modes listed
below are preferred and an attempt should be made to fit
each reactor facility into this scheme. If, however, a
reactor facility cannot be made to fit, modes may be
defined as needed, provided the definition is clearly
written with definite lines of demarcation between modes.
The number of modes should be held to a minimum. The
number of modes should be established based upon the
DOE 5480.22 Attachment 1
2-25-92 Page 13
NOTE: Defined terms in this list-appear in upper-case type throughout these
Technical Safety Requirements.
Term Definition
ACTION The steps listed in each requirement that are
required to be performed when the specified
LIMITING CONDITIONS FOR OPERATION are not met
ACTUATION LOGIC TEST The application of various simulated input signal
combinations in conjunction with each possible
interlock logic state and verifying the required
logic output. Shall include, as a minimum, a
continuity check of output devices
ANALOG CHANNEL Injection of a simulated signal
OPERATIONAL TEST into...
Figure 8 Example Listing of Definition
Attachment 1
Page 14
DOE 5480.22
2-25-92
minimum number required to be able to distinguish between
different facility conditions and to ensure the provision
of an adequate level of safety while in each condition.
(1) Define the Operational Modes as follows:
(a) Operation Mode - To be in Operation Mode, the
reactor shall be critical and may be at any
power level up to and including maximum allowed
power.
Section 17
(b) Standbv Mode - To be in Standby Mode, the
reactor shall be subcritical but capable of
operation without substantial administrative or
mechanical actions. K effective limits or other
limits needed to define the mode should be
included.
(c) Shutdown Mode - To be in Shutdown Mode, the
reactor shall be significantly subcritical and
capable of operation only after completing
substantial administrative and/or mechanical
actions. Normally, this would be a procedure or
series of procedures (such as multiple system
valve line-ups) that must be performed, but it
could be mechanical or electrical repairs,
calibration, or other activity. The K effective
values should normally be included, unless they
are of no use for a particular reactor, in which
case conrol rod position(s) or other
appropriate means should be defined for
“significantly subcritical.”
(d) Refueling Mode - To be in the Refueling mode,
the reactor vessel integrity is breached (in all
nonaccident conditions), or any core alterations
including fuel rods, control rods, targets, or
other vessel, internals are occurring or have
occurred. Normally this mode requires major
mechanical and associated administrative steps
be completed before operation is possible.
(e) Submodes may be created and defined as needed by
reactor facilities. The definition should be
clearly written with numerical or other definite
demarcation between submodes. The number of
submodes should be limited as much as possible
to avoid complexity and potential confusion.
(2) Normally the definition of the modes in a TSR
document will be a summary of the definitions above
Operational Modes (Nonreactor Nuclear Facilities). In
DOE 5480.22 Attachment 1
2-25-92 Page 15
with whatever additional information is needed for a
particular reactor, such as maximum allowed power, in
the definition of Operation Mode. It should be noted
that different mode definitions will be needed for
facilities being decommissioned and while they are
being dismantled.
c.
the interest of uniformity, the operational conditions
and modes listed below are preferred and an attempt
should be made to fit each nonreactor nuclear facility
into this scheme. If, however, a nonreactor nuclear
facility cannot be made to fit, modes may be defined as
needed, provided they are clearly defined with definite
lines of demarcation between modes (such as a numerical
value of pressure, temperature, or flow). The number of
modes should be held to a minimum because nonreactor
nuclear facilities may encompass various operations that
may be in differing modes rather than the whole facility
being in a single mode.
It should be noted that different mode definitions will
be needed for facilities being decomissioned and while
they are being dismantled. Define the Operational Modes
as follows:
(1)
(2)
(3)
(4)
(5)
(6)
Cold Standby - the facility is not operating with its
Operation Mode - the mission of the facility or its
current campaign is being performed.
Shutdown Mode - the facility iS not performing its
mission or its current campaign, and is incapable of
doing so in its present condition.
Warm Standby - the facility is not operating but
still retains its inventory of hazardous material.
hazardous material inventory removed.
Repair Mode - the facility iS not able to perform its
mission in its current condition.
Section 18
Submodes may be created and defined as needed by
nonreactor nuclear facilities. The definition should
be clearly written with numerical or other definite
demarcation between submodes. The number of submodes
should be limited as much as possible to avoid
complexity and potential confusion.
Attachment 1
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DOE 5480.22
2-25-92
d. Frequency Notation. The frequency notations, as used in
the surveillances and elsewhere, should be defined as
follows when included in the TSR:
Notation
S - Shiftly
D - Daily
W - Weekly
M - Monthly
Q - Quarterly
A - Semi-annually
C - Campaign
R - Refueling
S/U - Start-up
N/A
Minimum Frequency
(Periodicity Notation)
At least once per 12 hours.
At least once per 24 hours.
At least once per 7 days.
At least once per 31 days.
At least once per 92 days.
At least once per 184 days.
Prior to each campaign startup.
Prior to entering Standby or Operation
Modes after reactor refueling.
Prior to each startup.
Not applicable.
e. Acronyms. Provide a list of the acronyms used in the
TSR.
f. Safety Limits. Describe here the purpose and scope of
Safety Limits, i.e., process variable parameters
indicative of barrier failure that could lead to
uncontrolled release of radioactive materials.
Application of Safety Limits should be described in terms
of four basic rules:
(1) Compliance with safety Limits is required in all
modes.
(2) Upon exceeding a Safety Limit, the following steps
are to be taken:
(a) The affected parameter must be immediately
brought within the Safety Limit;
(b) Reactors are required to be shutdown
immediately. At nonreactor nuclear facilities,
the TSR is to specify actions to be taken which
must place the involved process in the most
stable, safe condition attainable, including
shutdown; and
(c) All other ACTION requirements must be met.
(3) A technical evaluation of the Safety Limit violation
is required to determine if any damage may have
DOE 5480.22
2-25-92
Attachment 1
Page 17
occurred and to evaluate the capacity of
system(s)/component(s) to restart.
(4) After violation of a Safety Limit, restart of the
affected system(s)/component(s) is prohibited until
approval from the cognizant Program Manager (PM) is
received.
Requirements (3) and (4) above may be included in Section
5 of the TSR “Administrative Controls,” provided
reference to the requirement is in the appropriate Safety
Limit.
g. Limiting Control Setting. Describe here the purpose and
function of Limiting Control Settings, i.e., process
variable parameters for safety systems that function to
prevent the exceedance of Safety Limits.
Application of Limiting Control Settings should be
described in terms of four basic rules:
(1) Compliance with a Limiting Control Setting is
required in the modes specified.
(2) Upon discovery that the instrumentation or interlock
setpoint is less conservative than the required
Limiting Control Settings, the associated ACTION
requirement must be met.
(3) Failure to comply with the ACTION statement in the
stated time interval is considered a TSR violation.
(4) If an automatic safety system does not function as
required, appropriate action should be taken to
compensate. In the case of reactors, that action may
take the form of reactor shutdown and/or engineered
safeguards feature initiation or adjustment. In the
case of nonreactor nuclear facilities, such action
might be manual process shutdown or adjustment.
Section 19
h. Limiting Conditions for Operation Describe here the
purpose and function of Limiting conditions for
Operation, i.e., Limiting Conditions for Operation
establish the lowest functional capability or performance
levels-of equipment required for normal safe operation of
the facility. Also, this part should contain the
requirements for how Limiting Conditions for Operation
should be applied.
Application of Limiting Conditions for operation follows
six basic rules:
Attachment 1
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DOE 5480.22
2-25-92
(1) Compliance with a Limiting Condition for Operation is
required in the modes specified.
(2) Upon the failure to meet a Limiting Condition for
Operation, the associated ACTION Requirement must be
met.
(3) Failure to meet the specified Limiting Condition for
Operation and its ACTION Statements within the time
interval is considered noncompliance with the
requirement. Similarly, completing the ACTION
Statement within the specified interval is considered
noncompliance with the requirement.
(4) Restoration of the Limiting Conditions for Operation
prior to the expiration of the specified time
interval(s) of the ACTION Statement removes the
requirement to complete the ACTION Statement.
(5) When a Limiting Condition for Operation is not met,
unless provided for differently in the ACTION
statement, within 1 hour action should be initiated
to place the facility in a mode in which the
requirement does not apply.
(6) Entry into a different mode should not be made unless
all of the Limiting Conditions for Operation are met
for that mode, except for the passage through a mode
as required to comply with ACTION Statements. For
example, for reactors, criticality should not be
achieved unless all Limiting Conditions for Operation
are met for OPERATION Mode; however, passage through
STANDBY Mode is allowed without all STANDBY Mode
Limiting Conditions for Operation be met if going
from OPERATION Mode to SHUTDOWN Mode under an ACTION
Statement.
The above rules should be discussed in detail, with
specific examples if necessary, along with
information that will help the user interpret and
apply the requirements.
i. Surveillance Requ irements. Describe the purpose of
Surveillance Requirements, that is, Surveillance
¹It should be noted that at nonreactor nuclear facilities that contain an
inventory of radioactive materials, the LCOs that are necessary to monitor for
a breech of the barriers containing the material, are always applicable. The
ACTION statement in this case should be rapid restoration of the capability, or
compensatory measures.
DOE 5480.22 Chg 1
9-15-92
Attachment 1
Page 19
Requirements are requirements relating to test,
calibration, or inspection to assure that the necessary
quality of systems and components is maintained, that
facility operation will be within the Safety Limits, and
that the Limiting Control Settings and the Limiting
Conditions for Operation will be met.
Application of surveillances follows four basic rules:
(1) Surveillance Requirements must be met for all
equipment/components/conditions to be considered
operable.
(2)
(3)
Each Surveillance Requirement shall be performed
within the specified interval, with a maximum
extension of 25 percent of the interval between any
two consecutive surveillances. (This extension is
intended to provide operational flexibility both for
scheduling and for performing surveillances. It
should not be relied upon as a routine extension of
the specified interval).
Section 20
Failure to perform a surveillance within the required
time interval or failure of a surveillance test shall
result in the equipment/component/condition being
declared inoperable and shall be considered a
violation of the TSR and a failure to meet a Limiting
Condition for Operation (LCO). When an equipment or
a component fails the surveillance test, the action
required by the TSR for failing to meet the LCO shall
be taken. When a surveillance requirement is not
performed within its required time frequency, in
order to avoid subjecting the facility to unnecessary
transients, e.g., scramming a reactor, additional
time may be allowed to complete a surveillance before
declaring a failed LCO and taking the required
action. In this case, from the time of discovery, Up
to 24 hours, or up to the time limit of the specified
surveillance frequency, whichever is less, is allowed
for performing a surveillance test. The need for
this allowance and the time needed to perform the
surveillance test shall be justified in the TSR Bases
and be approved by the PSO.
Vertical line denotes change.
Attachment 1
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DOE 5480.22
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(4) A different mode may not be entered unless all of the
Surveillance Requirements for equipment/components/
conditions of that mode are current, except for the
passage through an operational mode as required to
comply with ACTION Statements.
The above rules should be discussed as they apply to each
facility, and examples should be given as needed to fully
explain the surveillance system.
2.2 Section 2 - Safety Limits
a. Safety Limits. Safety Limits should describe as
precisely as possible the parameters being limited and
state the limit in measurable units (pressure,
temperature, flow, etc.). See Figure 9 for an example of
a reactor Safety Limit.
b. Applicabilitv. Each Safety Limit is to have a mode
applicability statement. This statement shall consist of
a simple list of modes or other conditions for which the
Safety Limit is applicable.
c. Actions. Action Statements are to completely describe
the actions to be taken in the event that the Safety
Limit is not met. These actions should first place the
facility in a safe, stable condition or should verify
that the facility already is safe and stable and will
remain so. Secondly, the ACTION Statement should
establish the steps and time limits to correct the out-
of-specification condition. The actions should bring the
affected parameter immediately within the Safety Limit
and should effect a shutdown of the affected system(s)
(or the reactor) within a justified facility-specific
time frame, normally less than an hour. Other actions
required after a Safety Limit violation, including
reporting requirements and an evaluation of possible
damage caused by the Safety Limit violation, may be
included in the ACTION Statement or may be placed in
Section 5, “Administrative Controls,” with proper
reference to the Requirement. A statement prohibiting
restart prior to PM approval of the system(s) shutdown
following a Safety Limit violation must be included
either in the ACTION Statement of each Safety Limit or in
Section 5 of the TSR “Administrative Controls.”
d. Selection of Safety Limits. Safety limits are those
limits which, if exceeded, could directly cause the
failure of one or more of the barriers that prevent the
uncontrolled release of radioactive or other hazardous
materials. Generally, containment/confinement should not
DOE 5480.22
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Attachment 1
Page 21
Section 21
be considered as barriers that require Safety Limits
because they are mitigative in nature; however, these
systems will be considered in the development of Limiting
Conditions for Operation. For reactors, typically these
2.1 SAFETY LIMITS
2.1.1 REACTOR
SL: The
CORE SAFETY LIMIT
reactor shall not be in OPERATION mode unless reactor
coolant flow exceeds X gallons per minute
APPLICABILITY: Operation Mode
ACTIONS : 1. Go to SHUTDOWN mode immediately,
2. Notify the DOE EOC within one hour of reaching
SHUTDOWN mode, and
3. Prohibit facility operation until authorized by DOE.
Figure 9 Example of Safety Limit for a Nuclear Reactor Facility
Attachment 1
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DOE 5480.22
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barriers are considered to be the fuel cladding and
primary coolant system, including piping and pressure
vessels. Typical reactor limits of importance are
primary coolant system pressure, primary coolant system
temperature, and reactor power. For reactors without
closed primary coolant systems (SUCh as pool-type
reactors), or with primary coolant systems that operate
at essentially atmospheric pressure, the only Safety
Limits may be on maximum reactor power and water
temperature.
For nonreactor nuclear facilities, the barriers
preventing the uncontrolled release of radioactive and
other hazardous materials are considered to be the
process material boundary (tank, pipe, glove box, etc.).
Limits of importance for nonreactor nuclear facilities
are facility specific, but often relate to pressure
differential across barriers, combustible/flammable
material limits, and process heat limits. A filter
system that is the only barrier between a process and the
environment may require a Safety Limit.
The state of a system relative to being critical is often
expressed in terms of the system’s neutron multiplication
factor [Keff]. Other measures, such as fraction of a
critical dimension or mass, can also be used at times.
There are typically no methods available to provide
continuous monitoring of the Keff of an operating system.
Because the neutron multiplication factor cannot be
measured directly, safety limits for nuclear criticality
safety are not applicable. Rather than relying upon a
numerical safety limit, the safety of an operation is
assured through the application of the double contingency
principle, which provides that no credible single failure
can lead to a criticality accident. This methodology
results in a wide variety of limits and controls such
that the violation of any single limit or control would
not result in a “point beyond which safety cannot be
assured.” These limits or conditions are contained in
Limiting Conditions for Operations or could be contained
in the Nuclear Criticality Safety Program in the
Administrative Control Section.
Not all nuclear facilities will have Safety Limits; for
example, Hazard Category 3 facilities may have no such
limits.
DOE 5480.22
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Attachment 1
Page 23
2.3 Section 3/4 - Operational Limits and Surveillance
Requirements³. This section should contain the Limiting
Control Settings and the Limiting Conditions for Operations, as
well as mode applicability information, Action Statements, and
Surveillance Requirements, for each requirement.
Section 22
The initial conditions of the safety analyses upon which the
authorization to operate is based are the least conservative
limits of acceptable operation. These initial condition values
must be adjusted for both instrument error and the expected
instrument drift between surveillances, and an allowance should be
made for calculational uncertainties prior to being used as limits
in the TSR. The adjustment for instrument error accounts for the
fact that the TSR limit is a measured value, while the SAR initial
condition/assumption is an exact number. Instrumentation has
inherent inaccuracy that must be accounted for. If an SAR initial
condition is a maximum pressure of 100 psi, for example, this
value must be adjusted to 97 psi for the maximum measured pressure
if the instrumentation has an accuracy of ±3 percent. Likewise,
adjustment must be made to the SAR initial condition or assumption
value to account for any calculations/assumptions that may have
been made in getting from the SAR initial condition/assumption to
the measured parameter(s). For example, if the SAR assumes a
certain flow of water through a reactor core, some adjustments or
conservatism must be built into the measured coolant flow in
circulation loops to account for the fact that not all of that
flow may pass through the core.
The most conservative value for each parameter contained in the
safety analyses makes up the envelope within which the facility
must operate in order to ensure that the SAR analyses bound safe
operation. That is to say that, provided the facility is operated
within these SAR initial condition limits (suitably adjusted for
instrument error and uncertainties), the SAR results accurately
demonstrate that the consequences of accidents/transients/
incidents are acceptable.
a. Limiting Control Settings. LCSs should describe, as
precisely as possible, the parameter being controlled and
its limit, or the limiting setting of the device to control
it. This information may be presented in tabular or graphic
form, with whatever written information that is necessary
placed in the body of the requirement. Figure 10 is an
example of LCS.
³Section 3 delineates Operational Limits. Section 4 describes Surveillance
Requirements. There is usually a one-to-one correlation between operational
limits and the surveillances related to them. Each limit is typically presented
at the same place as its related surveillance. For this reason, the combined TSR
section is designated Section 3/4.
Attachment 1
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DOE 5480.22
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b.
c.
d.
Limiting Conditions for Operation. The LCO statement should
describe, as precisely as possible, the lowest functional
capability or performance level of equipment required for
continued safe operation of the facility. Each separate
limiting condition should have an LCO with associated Mode
Applicability, ACTION statement, and Surveillance
Requirement.
Applicabilitv. Mode Applicability Statements are to be
included for each LCS and LCO. These shall consist of a
simple listing of the modes or conditions for which the LCS
or LCO is applicable.
Actions. Action Statements are to completely describe the
actions to be taken in the event that an LCS or LCO is not
met.
Section 23
For LCS ACTION Statements, if the setting in question is
less conservative than the required setpoint but still
within the Allowable Value, no action is required, as the
difference between the nominal setpoint and the Allowable
Value of the setpoint is equal to the band allowed for
calibration accuracy and instrument drift. If, however, the
setting is nonconservative relative to the Allowable Value,
the ACTION statement should require that the setpoint be
adjusted to within limits in a set time or that the channel
be declared inoperable. See Figure 10 for an example of an
LCS.
The Action Statement for LCOs should state the action
required to address the condition not meeting the LCO.
Normally this simply requires the adverse condition be
corrected in a certain time frame and provides further
action if this is impossible. For example, if an LCO
requires two pumps to be operable at all times when in the
OPERATION Mode, the Action Statement would likely state that
if one pump is inoperable it must be made operable in X
hours or the facility shall be placed in SHUTDOWN Mode
within the following Y hours; if both pumps were inoperable,
the Action Statement would likely require at lease one pump
be operable in Z hours and the second pump operable in the
following W hours or the facility shall be placed in
SHUTDOWN Mode. Figure 11 is an example of an LCO Action
Statement.
DOE 5480.22
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Attachment 1
Page 25
3.2 LIMITIN6 CONTROL SETTINGS
3.2.2 CALCINER BED FLUIDIZING AIR FLOW
LCS : The Calciner Bed fluidizing air flow isolation trip
setpoint shall be set to ˆ 125 scfm.
APPLICABILITY: Operation Mode.
ACTIONS:
A. With an air flow setpoint less than 125 scfm but more
than 117 scfm, adjust the setpoint to be ˆ 125 scfm
within 8 hours or declare the channel inoperable.
B. With an air flow setpoint \ 117 scfm, adjust the
setpoint to be ˆ 125 scfm within one hour or declare
the channel inoperable.
C. With neither of the two Calciner Bed fluidizing air
flow channels OPERABLE, return at least one channel
to OPERABLE status within 8 hours or place the
calcining operations in SHUTDOWN.
Figure 10 Example of Limiting Control Settings
Attachment 1 DOE 5480.22
Page 26 2-25-92
3/4.4 CONFINEMENT SYSTEMS
3.4.2 CONFINEMENT EXHAUST SYSTEMS
LCO: A. Two CONFINEMENT EXHAUST SYSTEMS shall be OPERABLE with each
system comprised of the following components:
1.
2.
3.
B. One
Applicability:
ACTIONS: 1.
One CONFINEMENT EXHAUST SYSTEM fan
One in-line charcoal filter
The following instrumentation:
a. one confinement exhaust flow indicator, with alarm
b. one beta-gamma radiation monitor, with alarm
c. one gas temperature sensor down-stream of the filter
CONFINEMENT EXHAUST SYSTEM shall be in operation.
OPERATION MODE, and during FUEL MOVEMENT
With one CONFINEMENT EXHAUST SYSTEM inoperable, restore
the inoperable system to OPERABLE status within 72 hours
OR be in STANDBY within the next 6 hours.
(continued)
Figure 11 Example of LCO
Page 1 of 2
DOE 5480.22
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Attachment 1
Page 27
3/4.4 CONFINEMENT SYSTEMS
3.4.2 CONFINEMENT EXHAUST SYSTEMS
ACTIONS (continued)
2. With both CONFINEMENT EXHAUST SYSTEMS inoperable:
a. Restore one of the systems to OPERABLE status within 1
hour
OR be in at least STANDBY within the following 1 hour
AND
b. Restore the second system to OPERABLE status within 72
hours
OR be in STANDBY in the following 6 hours
c. Cease moving fuel until at least one system is OPERABLE
SURVEILLANCE REQUIREMENTS
Section 24
4.4.2 Each CONFINEMENT EXHAUST SYSTEM shall be demonstrated OPERABLE
a. at least shiftly:
1) the CONFINEMENT EXHAUST SYSTEM in OPERATION shall be
verified to be taking a suction on the reactor building
at a rate of 500 SCFM or more
2) the CONFINEMENT EXHAUST SYSTEM in STANDBY shall be
verified to be aligned to take suction on the reactor
building and with the fan control in “AUTO” position
3) all instrumentation required in LCO A.3. above is
verified OPERABLE
b. at least monthly each CONFINEMENT EXHAUST SYSTEM shall be
operated for an hour or more with a flow of 500 SCFM or more
c. at least annually the charcoal filter shall be tested to have
an efficiency of at least 99% removal of methyl iodine.
Figure 11 Example of LCO
Page 2 of 2
The Action Statement for nuclear criticality safety LCO
should normally be that the process or activities not in
compliance with the LCO should be stopped immediately (if
Attachment 1
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DOE 5480.22
2-25-92
this action would not result in a less stable condition) and
the process, system, or area be restored to a safe condition
in accordance with an approved recovery plan.
Action Statements should be broken down whenever possible
into separate statements describing a single deviated
condition requiring operator action; this simplifies the
explanation of the expected action and better ensures that it
will be performed correctly. Completion times for each
action should be stated in simple units of time. Use the
term “inoperable” to describe the deviated condition to limit
the length of the Action Statement.
Use the term “OPERABLE” to describe the corrected condition
or part of the system without deviation. While “inoperable”
is presented in lower-case letters, “OPERABLE” is presented
in upper-case letters. Keep wording in Action Statements as
brief as possible. Be consistent in the use of verbs and
tense. Use the same wording structure between requirements.
Do not use articles unless necessary for clarity. When a
mode change is required by an Action Statement, use the
actual title of the modes (e.g., rather than numerical
designation of modes) to prevent any possible
misunderstanding or typographical error that could cause the
operator to take inappropriate action. Action Statements
should cover all possible combination of operable and
inoperable components in the systems described.
e. Surveillance Requirements. Surveillance Requirement
statements consist of short descriptions of each requirement
and its frequency of performance. A frequency of
performance is mandatory. These statements should be as
brief as possible but should identify those requirements
needed to ensure compliance with the LCS or LCO. Begin each
Surveillance. Requirement with a
verb. Be consistent in use of terms and sentence structure
between requirements.
f. Selection of Limiting Control Settings
(1) Limiting Control Settings (reactors) consist of the
reactor trip system instrumentation setpoints. All
reactor trip setpoints should be listed in this section,
along with the “Allowable Value,” which is the limiting
value of the LCS accounting for all instrumentation
channel uncertainties.
The Reactor Trip Setpoint limits specified here are the
nominal values at which the reactor trips are set and
shall be selected to provide sufficient allowances
between the trip setpoint and the Safety Limit to ensure
DOE 5480.22
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Attachment 1
Page 29
Section 25
that the core and the reactor coolant system are
prevented from exceeding their Safety Limits during
normal operation and anticipated operational
occurrences.
(2) Limiting Control Settings of instruments that monitor
process variables at nonreactor nuclear facilities are
the settings that either initiate protective devices
themselves or sound an alarm to alert facility personnel
to take action in order to protect barriers that prevent
the uncontrolled release of radioactive materials.
Where a Limiting Control Setting is specified for a
variable that is also subject to a Safety Limit, the
setting shall be chosen so that protective action taken
upon exceeding the setting, either automatic or manual,
will correct the abnormal situation before a Safety
Limit is exceeded. An example of a Limiting Control
Setting might be the high differential pressure across a
glove box.
g. Selection of Limiting Conditions for Operation (for
reactors). LCO should be written only for systems and
equipment that meet one (or more) of the following
descriptions:
(1) Installed instrumentation that is used to detect and
indicate in the control room or other control location
an inadvertent criticality or a significant degradation
of any of the physical barriers that prevent the
uncontrolled release of radioactive or other hazardous
materials that could threaten the health and safety of
the public and pose a risk for workers. This section is
intended to control those instruments installed to
detect excessive reactor coolant system or other
container leakage. Depending on design, this could, for
example, include instrumentation to measure coolant
systems pressure or level , make-up tank level, pool
level, sump level, or even radiation level.
Instrumentation used to detect degradation of or leakage
from waste systems and storage tanks, such as pressure
and level instrumentation and radiation or chemical
monitors, should be included.
(2) Structures, systems, and components that are relied upon
in the Safety Analysis to function or actuate to
mitigate accidents, or transients that either involve
the assumed failure of, or present a challenge to, the
integrity of a physical barrier that prevents the
uncontrolled release of radioactive materials that could
threaten the health and safety of the public and pose a
risk for workers. This section is intended to include
Attachment 1
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DOE 5480.22
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only those structures, systems, and components that are
part of the primary success path of a safety sequence
analysis, and those support and actuation systems
necessary for them to function successfully.
The primary success path of a safety sequence analysis
is the sequence of events assumed by the Safety Analyses
which leads to the conclusion of a transient or accident
with consequences that are acceptable. Hence, any
structure, system, or component in that assumed sequence
should be included in the LCOs. Each transient or
accident analysis that challenges the integrity of a
radioactive material barrier, or involves its assumed
failure, should be studied to compile a list of involved
components, systems, and structures. Radioactive
material barriers are typically fuel cladding, the
primary coolant system, the confinement or containment,
tanks, piping, and ventilation systems.
Section 26
Included here should be the reactor trip systems, decay
heat removal systems, ventilation systems, and
containment or confinement systems, as well as emergency
power sources. Other items that might be included, if
they are assumed by the Safety Analyses to operate, are
emergency diesel generators, poison injection systems,
makeup systems, and radioactive waste systems. In all
cases, support and actuation systems necessary for the
above to function must be included, such as
instrumentation and controls, power supplies (electric,
compressed air), and cooling systems. The above are to
serve only as examples; a list must be developed for
each reactor facility.
Care should be taken to include only structures,
systems, and components that meet the qualifying
definitions. Maintaining the LCOs at the minimum number
necessary will emphasize the importance of the LCOs and
better ensure the compliance with them.
(3) Process variables that are initial conditions for those
design basis accidents or transient analyses that
involve the assumed failure of, or present a challenge
to, the integrity of a radioactive material barrier.
Identification of these variables should come from a
search of each such transient and accident analysis.
Every initial condition of a process variable mentioned
in these analyses should be included in the TSRs. The
LCO should be established at a level that will assure
that the process variable is not less conservative
during actual operation than was assumed in any of the
safety analyses.
DOE 5480.22
2-25-92
(4)
(5)
Attachment 1
Page 31
Included here, for example, would be reactor coolant
flow, temperature, pressure, neutron flux, storage tank
level, pressure, temperature, and content concentration.
Experiments and experimental facilities that could
provide a path for the uncontrolled release of
radioactive materials, or that could affect criticality.
This section is to include experimental facilities and
experiments containing radioactive materials that could
leak to threaten the public and workers. Likewise
included here are the reactivity effects of experiments
and experimental facilities. Any experiment or
experimental facility that can adversely affect the
critical state of the reactor by either adding
reactivity or significantly altering distribution of
power, should have an LCO stating the conditions and
limits placed on the experiment or experimental facility
and must be approved by DOE as a TSR revision before the
experiment can be conducted.
Systems and equipment that are used for handling fissile
material outside of the reactor core. LCOs written to
cover equipment that meets this description shall
incorporate the double contingency principle. This
principle requires that at least two unlikely,
independent changes in process conditions would have to
occur concurrently in order to make a criticality
accident possible. Hence, inadvertent criticality
protection shall be provided by either: (a) the control
of two independent process parameters (the preferred
approach, if practical); or (b) a system of multiple (at
least two) controls on a single parameter. In all
cases, no single failure shall result in the potential
for a criticality accident. Mass/density limits,
geometry spacing, the use of neutron poisons, measures
necessary to prevent unplanned transport of materials to
an unfavorable geometry, etc., are parameters/conditions
that may be controlled to meet this requirement. The
basis for selecting either approach shall be fully
documented.
Section 27
h. Selection of Limiting Conditions for Operation (for
nonreactor nuclear facilities) LCOs should be written only
for systems and equipment which meet one (or more) of the
following descriptions:
(1) Installed instrumentation that is used to detect and
indicate in the control room or other control location,
an inadvertent criticality or a significant degradation
of the physical barriers that prevent the uncontrolled
release of radioactive materials. This is most
Attachment 1
Page 32
(2)
DOE 5480.22
2-25-92
applicable to the primary isolation barrier, which can
be the process material boundary. The instrumentation
indicated here would be that which is used to detect
leakage from the tank, pipe, glove box, and so on that
define the primary isolation. In addition to various
types of radiation and chemical monitors, other
instrumentation included here could be flow (gas or
liquid), pressure, etc., depending on design.
Structures, systems, and components that are relied upon
in the Safety Analyses to function or actuate to prevent
or mitigate accidents, or transients that either involve
the assumed failure of, or present a challenge to, the
integrity of a physical barrier that prevents the
uncontrolled release of radioactive materials. This
section is intended to include only those structures,
systems, and components that are part of the primary
success path of a safety sequence analysis and those
support and actuation systems necessary for them to
function successfully.
The primary success path of a safety sequence analysis
is the sequence of events assumed by the Safety
Analyses, which leads to the conclusion of a transient
or accident with consequences that are acceptable.
Hence, any structure, system, or component in that
assumed sequence should be included in the LCO. Each
transient or accident analysis that challenges the
integrity of a radioactive material barrier, or involves
its assumed failure, should be studied to compile a list
of involved components, systems, and structures.
Radioactive material barriers are typically the process
material barrier and the containment or confinement.
Included here should be systems that automatically place
the facility in a safe condition, such as
instrumentation and controls that trip or S1OW processes
and automatic isolation systems. Other items that might
be included, if they are assumed by the Safety Analyses
to operate, are emergency power sources (diesel
generators, turbines, etc.), fire detection/suppression
and possibly seismic detection instrumentation.
Containment/confinement requirements would be in this
section as LCOs. In all cases, support and actuation
systems necessary for the above to function must be
included, such as instrumentation and controls, power
supplies (electric, compressed air), and cooling
systems.
The above are to serve only as examples; a list must be
developed for each facility.
DOE 5480.22
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Attachment 1
Page 33
(3)
Care should be taken to include only structures,
systems, and components that meet the qualifying
definitions. However, if operating experience or risk
assessment indicates that additional structures,
systems, or components should have LCOs, they may be
included provided strong justification is documented.
Maintaining the LCOs at the minimum number necessary
will emphasize the importance of the LCOs and better
ensure the compliance with them.
Section 28
Process variables that are initial conditions for
those design basis accidents or transient analyses
that involve the assumed failure of, or present a
challenge to, the integrity of a radioactive material
barrier. Identification of these variables should
come from a search of each such transient and
accident analysis. Every initial condition of a
process variable mentioned in these analyses should
be included in the TSRs. The LCO should be
established at a level that will assure that the
process variable is not less conservative during
actual operation than was assumed in any of the
safety analyses.
(4) Experiments and experimental facilities that could
provide a path for the uncontrolled release of
radioactive or other hazardous materials or that
could affect criticality. This section is to include
experimental facilities and experiments containing
radioactive materials that could leak to threaten the
public and workers.
(5) Systems and equipment that are used for handling
fissile material. LCOs written to cover equipment
that meets this description shall incorporate the
double contingency principle. This principle
requires that at least two unlikely, independent
changes in process conditions would have to occur
concurrently in order to make a criticality accident
Hence, inadvertent criticality protectionpossible. .
shall be provided by either: (a) the control of two
independent process parameters (the preferred
approach, if practical) or (b) a system of multiple
(at least two) controls on a single parameter. In
all cases, no single failure shall result in the
potential for a criticality accident. Mass/density
limits, geometry/spacing, the use of neutron poisons,
measures necessary to prevent unplanned transport of
materials to an unfavorable geometry, etc., are
parameters/conditions that may be controlled to meet
DOE 5480.22Attachment 1
Page 34
i.
j.
k.
2-25-92
this requirement. The basis for selecting either
approach shall be fully documented.
Application of LCO. General rules of application of
LCOs, as discussed in section II.2.1.h, should be written
as the first division of Section 3 (3.0.1, 3.0.2,...).
An example of an application LCO is given in Figure 12
(nuclear reactors) and Figure 13 (nonreactor nuclear
facilities).
Application of Surveillance Requirements. General rules
of application of Surveillance Requirements, as discussed
in section II.2.1.i, should be written as the first
division of Section 4 (4.0.1, 4.0.2, . ..). An example of
such surveillance rules is given in Figure 14.
Special Test Exceptions. Special test exceptions may be
allowed under controlled conditions. These test
exceptions should be placed in Section 3 (LCO). Any test
exceptions should be clearly written to state which LCOs
are being excepted, for how long, and under what
conditions.
2.4 Section 5 - Administrative Controls. This section should
impose administrative requirements necessary to control
operation of the facility such that it meets the TSR. The
sections that follow discuss some of the administrative
controls that should be placed in this section. The list here
DOE 5480.22 Attachment 1
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3/4 OPERATING LIMITS AND SURVEILLANCE REQUIREMENTS
3/4.0 GENERAL APPLICATION
OPERATING LIMITS
3.0.1 LIMITING CONTROL SETTINGS
3.0.1.1 Compliance with the LIMITING CONTROL SETTINGS
requirements is required during the OPERATIONAL MODES or
other conditions specified therein.
Section 29
3.0.1.2 Noncompliance with a requirement (TSR violation) shall
exist when the LIMITING CONTROL SETTING and associated
ACTION statement are not met within the specified time
interval.
3.0.2 LIMITING CONDITIONS FOR OPERATION
3.0.2.1 Compliance with the LIMITING CONDITIONS FOR OPERATION
contained in the succeeding requirements are demanded
during the OPERATIONAL MODES or other conditions
specified therein; except that upon failure to meet the
LIMITING CONDITIONS FOR OPERATION, the associated ACTION
Statement shall be met.
3.0.2.2 Noncompliance with a requirement (TSR violation) shall
exist when the demands of the LIMITING CONDITION FOR
OPERATION and associated ACTION Statement are not met
within the specified time intervals. If the LIMITING
CONDITION FOR OPERATION is restored prior to expiration
of the specified time intervals, completion of the ACTION
Statement is not required.
(continued)
Figure 12 Example of General Application of Operating
Limits for a Nuclear Reactor TSR
Page 1 of 2
Attachment 1
Page 36
DOE 5480. 22
2-25-92
3/4 OPERATING LIMITS AND SURVEILLANCE REQUIREMENTS
3/4.0 GENERAL APPLICATION
OPERATING LIMITS
3.0.2.3 When a LIMITING CONDITION FOR OPERATION is not met,
except as provided in the associated ACTION Statement,
within 1 hour action shall be initiated to place the unit
in a MODE in which the requirement does not apply.
Where corrective measures are completed that permit
operation under the ACTION Statement, the action may be
taken in accordance with the specified time limits as
measured from the time of failure to meet the LIMITING
CONDITION FOR OPERATION. Exceptions are stated in the
individual requirements.
This requirement is not applicable in SHUTDOWN or
REFUELING MODES.
3.0.2.4 Entry into an OPERATIONAL MODE or other specified
condition shall not be made unless the conditions for the
LIMITING CONDITION FOR OPERATION are met without reliance
on provisions contained in the ACTION Statement. This
provision shall not prevent passage through or to
OPERATIONAL MODES as required to comply with ACTION
Statement. Exceptions are stated in the individual
requirements.
Figure 12 Example of 6eneral Application of Operating
Limits for a Nuclear Reactor TSR
Page 2 of 2
DOE 5480.22 Attachment 1
2-25-92 Page 37
3/4 OPERATING LIMITS AND SURVEILLANCE REQUIREMENTS
3/4.0 GENERAL APPLICATION
OPERATING LIMITS
3.0.1 LIMITING CONTROL SETTINGS
3.0.1.1 Compliance with the LIMITING CONTROL SETTINGS
requirements is required during the OPERATIONAL MODES or
other conditions specified therein.
3.0.1.2 Noncompliance with the requirement (TSR violation) shall
exist when the LIMITING CONTROL SETTINGS and associated
ACTION Statement are not met within the specified time
interval.
3.0.2 LIMITING CONDITIONS FOR OPERATION
3.0.2.1 Compliance with the LIMITING CONDITIONS FOR OPERATION
contained in the succeeding requirements is demanded
during the OPERATIONAL MODES or other conditions
specified therein; except that upon failure to meet the
LIMITING CONDITIONS FOR OPERATION, the associated ACTION
Statement shall be met.
3.0.2.2 Noncompliance with a requirement (TSR violation) shall
exist when the demands of the LIMITING CONDITION FOR
OPERATION and associated ACTION Statements are not met
within the specified time intervals. If the LIMITING
CONDITION FOR OPERATION is restored prior to expiration
of the specified time intervals, completion of the ACTION
Statement is not required.
(continued)
Section 30
Figure 13 Example of General Application of operating
Limits for a Nonreactor Nuclear Facility TSR
Page 1 of 2
Attachment 1
Page 38
DOE 5480.22
2-25-92
3/4 OPERATING LIMITS AND SURVEILIANCE REQUIREMENTS
3/4.0 GENERAL APPLICATION
OPERATING LIMITS
3.0.2.3 When a
except
within
LIMITING CONDITION FOR OPERATION is not met,
as provided in the associated ACTION Statement,
1 hour action shall be initiated to place the unit
in a MODE in which the requirement does not-apply by
placing it in SHUTDOWN within the next 12 hours.
Where corrective measures are completed that permit
operation under the ACTION Statement, the action may be
taken in accordance with the specified time limits as
measured from the time of failure to meet the LIMITING
CONDITION FOR OPERATION. Exceptions are stated in the
individual requirements.
This specification is not applicable in SHUTDOUN or
REPAIR MODES.
3.0.2.4 Entry into an OPERATIONAL MODE or other specified
condition shall not be made unless the conditions for the
LIMITING CONDITION FOR OPERATION are met without reliance
on provisions contained in the ACTION Statement. This
provision shall not prevent passage through or to
OPERATIONAL MODES as required to comply with ACTION
Statement. Exceptions are stated in the individual
requirements.
Figure 13 Example of 6eneral Application of operating
Limits for a Nonreactor Nuclear Facility TSR
Page 2 of 2
DOE 5480.22
2-25-92
Attachment 1
Page 39
3/4 OPERATING LIMITS AND SURVEILLANCE REOUIREMENTS
3/4.0 GENERAL APPLICATION
SURVEILLANCE REQUIREMENTS
4.0.1
4.0.2
4.0.3
4.0.4
SURVEILLANCE REQUIREMENTS shall be met during the
Operational Modes or other conditions specified for
individual LCS and LCOs unless otherwise stated in an
individual SURVEILLANCE REQUIREMENT.
Each SURVEILLANCE REQUIREMENT shall be performed within
1.25 of the specified time interval.
Failure to perform a SURVEILLANCE REQUIREMENT within the
specified time interval (TSR violation) shall constitute
a failure to meet the OPERABILITY requirements for a
LIMITING CONDITION FOR OPERATION. Exceptions are stated
in the individual requirements. Surveillances do not
have to be performed on inoperable equipment.
Entry into an Operational Mode or other specified
condition shall-not be made unless the SURVEILLANCE
REQUIREMENT(S) associated with the LIMITING CONDITION FOR
OPERATION has been performed within the stated
surveillance interval or as other otherwise specified.
Figure 14 Example of 6eneral Application for SURVEILLANCE REQUIREMENTS
Attachment 1
Page 40
DOE 5480.22
2-25-92
is not complete; additions should be made by each facility.
a. Contractor Resoonsibilitv
(1) The Facility Supervisor shall be responsible for
overall unit operation and shall delegate in writing
the succession to this responsibility during his
absence.
(2) The Shift Foreman shall be responsible for the local
command function. A management directive to this
effect, signed by the [highest level of corporate
management] shall be reissued to all station
personnel on an annual basis. During any absence of
the Shift Foreman from the area, a designated,
qualified individual shall assume the command
function.
Section 31
b. Contracto r Organizat ion. Onsite and offsite
organizations shall be described for facility operation
and contractor management. The onsite and offsite
organizations shall be described in terms of the lines of
authority, responsibility, and communication for the
highest management levels through intermediate levels to
and including all operating organization positions. The
individuals who train the operating staff and those who
carry out health physics and quality assurance functions
may report to the appropriate onsite manager; however,
they shall have sufficient organizational freedom to
ensure their independence from operating pressures.
c. Procedures. Procedures should be required to be
established, implemented, and maintained for all
activities in support of the TSR. This should include:
emergency operating procedures; operating procedures for
all phases of operation, procedures for all surveillances
required by TSR; Security Plan implementation; Emergency
Plan implementation; fire protection; procedures for all
programs listed in paragraph d below; and procedures
governing the administrative aspects of operation of the
facility. A system should be developed to control all
procedures used in support of the TSR. The system should
include the mechanism of review, approval, revision,
control, and temporary-changes.
d. Programs. Programs developed to ensure the safe and
healthful operation of the facility should be discussed
here and thereby required by reference. These programs
might include but not be limited to the following: in-
service inspection of components, pumps, and valves as
DOE 5480.22
2-25-92
Attachment 1
Page 41
per ASME Boiler and pressure Vessel Code Section XI;
worker protection such as Radiation Protection Programs,
Inplant Radiation, and Toxic Substance Monitoring;
industrial hygiene and occupational safety; Process
Control Programs; Ventilation Filter Testing Program;
Explosive Gas and Storage Tank Radioactivity Monitoring
Programs; radiological effluent control; environmental
measurement and control programs; quality programs;
configuration control programs; and document control.
The individual program documents should be referenced or
the basic elements of these programs should be described
in this section but are to be separate controlled volumes
not included in the TSR. The detailed Nuclear
Criticality Safety Program may be presented in this
subsection of the TSR.
e. Minimum Operations Shift Complement should be as follows.
This Section of the Administrative Controls should
include the maximum working hours and maximum number of
consecutive days on duty.
(1) For Categorv A Reactors.
(a) A certified reactor operator or senior reactor
operator should be required to be at the
controls in the control room at all times when
the reactor is fueled, except if the reactor is
shut down and secured with a physical constraint
(a lock, for example) such that no reactivity
changes are possible;
(b) In addition, a certified senior reactor operator
should be required to be in the control room at
all times when the reactor is operating or in an
operational mode other than shut down or
refueling;
(c) A certified senior reactor operator or senior
reactor operator limited to fuel handling should
be required to be present at the facility to
directly supervise any alteration of the core
including fuel loading or transfer. This person
should be required to have no other concurrent
duties; and
Section 32
(d) Required staffing of operating shifts should be
specified on the basis of relevant safety
analyses. This is to include health physics,
fire protection, and other on-shift or on-demand
support staff.
Attachment 1
Page 42
DOE 5480.22
2-25-92
Note that for Category A reactors, USNRC Regulatory Guide
1-114, Rev. 2, “Guidance to the Operators at the Controls
and Senior Operators in the Control Room of a Nuclear
Power Unit” should be used to define acceptable control
room boundaries for the senior reactor operator and
reactor operator to be considered “in the control room”
and “at the controls” respectively.
(2) For Cateqorv B Reactors.
(a) A certified reactor operator or senior reactor
operator should be required to be at the
controls at all times during the operation of
the reactor.
(b) A certified senior reactor operator should be
required to be present at the reactor facility
or readily available or on call at all times
during operation and to be present in the
control room during startup and approach to
power, during recovery from an unplanned or
unscheduled shutdown, or during significant
reduction in power. A certified senior reactor
operator should be required to be present in the
facility during refueling; and
(c) Required staffing of operating shifts should be
specified on the basis of relevant safety
analyses. This is to include health physics,
fire protection, and other on-shift or on-demand
support staff.
(3) For Nonreactor Nuclear Facilities The required
staffing of operating shifts for nonreactor nuclear
facilities and the members of the shift staff
required to be present in the control room or control
area for different operating conditions should be
specified on the basis of relevant safety analyses.
f. Operating Support. Included should be the requirement to
maintain a current list in the control room or other
control location of facility support personnel by name,
title, and work and home telephone number. The list
should include management, radiation safety, and
technical support personnel. This section of the
Administrative Controls should delineate the shift
staffing including operations and others as needed
(health physics, fire protection, individuals monitoring
industrial hygiene parameters, etc.).
DOE 5480.22
2-25-92
Attachment 1
Page 43
g. Facilitv Staff Qualifications and Training. Minimum
qualifications for members of the unit staff shall be
specified by use of an overall qualification statement
referencing an American National Standard Institute
(ANSI) standard; alternately, by specifying individual
position qualification. Generally, the first method is
preferable; however, the second method is adaptable to
those unit staffs requiring special qualification
statements because of a unique organizational structure.
A retraining and replacement training program for the
unit staff shall be maintained under the direction of the
[position title] and shall meet or exceed the
requirements and recommendations of Section [ ] of [an
ANSI standard], and, for appropriate designated
positions, shall include familiarization with relevant
industry operational experience.
h. OPERABILITY Definition and Implementation Principles.
The definition of OPERABLE-OPERABILITY is to be included
in the TSR as follows:
Section 33
“A system, subsystem, train, component, or device shall
be OPERABLE or have OPERABILITY when it is capable of
performing its specified function, and when all
necessary attendant instrumentation, controls, electrical
power, cooling or seal water, lubrication, or other
auxiliary equipment that are required for the system,
subsystem, train, component, or device to perform its
function(s) are also capable of performing their related
support function(s).”
General Principles of OPERABILITY are to be included as
follows:
GENERAL PRINCIPLE 1: A system is considered OPERABLE as
long as there exists assurance that it is capable of
performing its specified safety function(s).
GENERAL PRINCIPLE 2: A system can perform its specified
safety function(s) only when all of its necessary support
systems are capable of performing their related support
functions.
GENERAL PRINCIPLE 3: Assuring the capability to perform
a safety function is an ongoing and continuous process:
GENERAL PRINCIPLE 4: When all systems designed to
perform a certain safety function are not capable of
performing that safety function, a loss of function
Attachment 1
Page 44
DOE 5480.22
2-25-92
condition exists. Facility operation with such a
condition may not continue.
GENERAL PRINCIPLE 5: When a system is determined to be
incapable of performing its intended safety function(s),
the declaration of inoperability shall be immediate.
GENERAL PRINCIPLE 6: Any exception to an immediate
determination-of inoperability must be justified.
i. Technical Safety Requ i rement Basis Control. Contractor
may make changes to the TSR Bases without prior DOE
approval provided the changes do not involve any of the
following:
(1) A change in the TSR;
(2) A change to the SAR that involves an Unreviewed
Safety Question as defined in DOE 5480-.21;
(3) A change to the way that OPERABILITY or the TSR could
be met, applied, or interpreted.
Proposed changes that meet the criteria of (a), (b),
or (c) above shall be reviewed and approved by the
DOE prior to implementation. Changes to the Basis
that may be implemented without prior DOE approval
will be provided to the DOE at least annually.
j. Reviews and Audits . Describe the method(s) established
to conduct independent reviews and audits. The methods
may take a range of forms acceptable to the DOE. These
may include creating an organizational unit, a standing
or ad hoc committee, or assigning individuals capable of
conducting these reviews and audits. When an individual
performs a review function, a cross-disciplinary review
determination is necessary. If deemed necessary, such
reviews shall be performed by the review personnel of the
appropriate discipline. Individual reviewers shall not
review their own work or work for which they have direct
responsibility. Regardless of the method used,
management shall specify the functions, organizational
arrangement, responsibilities, appropriate ANSI/ANS 3.1-
1981 qualifications, and reporting requirements of each
functional element or unit that contributes to these
processes.
Reviews and audits of activities affecting facility
safety have two distinct elements. The first of these is
the review performed by facility personnel to ensure that
day-to-day activities are conducted in a safe manner.
DOE 5480.22 Attachment 1
2-25-92 Page 45
Section 34
The second of these is the review and audit of facility
activities and programs affecting nuclear safety that are
performed independent of the facility staff. The
independent review and audit should provide for the
integration of the reviews and audits into a cohesive
program to provide senior level facility management with
an assessment of facility operation and recommend actions
to improve nuclear safety and facility reliability. It
should include an assessment of the effectiveness of
reviews conducted by facility staff.
Facility staff reviews should include: USQ
determinations; proposed tests and experiments;
procedures; programs; facility changes and modifications;
TSR changes; facility operation, maintenance, and
testing; DOE and industry issues of safety significance;
and any other safety-related items.
Reviews by the offsite safety organization should
include: USQ determinations; proposed changes to the
TSR; violations of codes, Orders, and procedures that
have safety and health significance; Occurrence Reports;
staff performance; unanticipated deficiencies of
structures, systems, or components that could affect
nuclear safety; significant, unplanned radiological or
toxic material releases; and significant operating
abnormalities.
Audits by the offsite safety organization should include
conformance with TSR; training and qualification of
facility staff; program implementation; deficiency
corrective actions; quality program adherence; and other
activities of safety significance.
k. Reporting Requirements. Reporting requirements are to be
in accordance with DOE 5000.3A.
2.5 Bases Appendix. This Appendix shall provide brief summary
statements of the reasons for the SLs, OLs, and associated Srs.
The bases shall show how the numeric values, the conditions,
the surveillances, and the Action Statements fulfill the
purpose derived from the safety documentation. The primary
purpose for describing the basis of each requirement is to
ensure that any future changes to the requirement will not
affect its original intent or purpose. The Bases Appendix
shall reference the more specific detailed basis for the TSRs
in the SAR.
2.6 Design Features Appendix. Until a facility has a DOE-approved
SAR, a Design Features Appendix should be included with the
TSR. After DOE approves a facility SAR, the Design Features
Attachment 1 DOE 5480.22
Page 46 2-25-92
Appendix may be eliminated, provided that assurance is made
that the provisions of the Design Features Appendix are present
in the approved SAR or elsewhere in the TSR.
The purpose of the Design Features Appendix is to describe in
detail those features not covered elsewhere in the TSRs that,
if altered or modified, would have a significant effect on
safety. Three areas need to be addressed: vital passive
components, configuration and physical arrangement, and
materials.
a. Vital passive components are essentially piping, vessels,
supports, structures (such as confinement), and
containers. This discussion should present a detailed
description of each vital passive component, including
functions, dimensions, design criteria, applicable codes
and standards, materials used, in-service inspection
required, manufacturer, and all details that must be
considered prior to alteration, modification, or
replacement.
Section 35
b. The Design Features Appendix should also address
configuration and physical arrangement where it is a
safety concern. Details should be given of the
configuration or physical arrangement including
dimensions, the parameter(s) being controlled, and the
reasoning behind the design. Examples of such a
situation would be where criticality avoidance is
dependent on physical separation and where configuration
is used to minimize radiation levels.
c. If safe operation of the facility is dependent on any
component being constructed of a particular material,
that requirement should be discussed in the Design
Features Appendix. The component and system should be
identified as well as the special material involved, any
in-service inspections required of the material or
component, and any special operational considerations
such as maximum/minimum temperature, pressure, flow, or
chemical concentration. Material considerations may be a
separate section of the Design Features Appendix or may
be integrated into other portions of the Design Features
Appendix.
d. Site Characteristics such as the locations of public
access roads, collocated facilities, facility area
boundaries, site boundaries, nearest residence distances,
etc., should be presented in this appendix.
3. Format
DOE 5480.22 Attachment 1
2-25-92 Page 47
3.1 Numbering of Pages/Sections/Tables/Figures
a. Page Numbering. All page numbers should be centered at
the bottom of the page. The following paragraphs
describe the numbering schemes for individual sections.
(1) Front Matter Pages. Number the front matter pages
with successive lower-case Roman numerals i, ii, iii,
etc.
(2) Section Page Numbering (Except Sections 2 and 3/4).
All section page numbers, except for Sections 2 and
3/4, should have two parts: an Arabic section number
followed by a dash, and an Arabic number designating
the numerical page number within the section (see
example below).
Ex ample Page Numbering for Sections l and 5
1-1, 1-2, 1-3, . . . .
5-1, 5-2, 5-3, . . . .
(3) Sections 2 and 3/4 Page Numbering. Sections 2 and
3/4 are subdivided into numerous subsections
corresponding to the individual requirement numbers.
The first part of each page number for Sections 2 or
3/4 should, therefore, correspond to the subsection
number followed by a dash and an Arabic number
designating the numerical page number within the
subsection (see examples below).
xample Page Numbering for Sect ions 2 and 3/4
2 l-l, 2 1-2, 2 1-3, . . . .
3/4 1-1, 3/4 1-2, 3/4 1-3, . . . .
3/4 2-1, 3/4 2-2, 3/4 2-3, . . . .
(4) Numbering of Appendix Pages. Number all pages of
appendices, except for the 8asis Appendix, with an
alpha-numeric number separated by a dash. The first
part should be a capital letter corresponding to the
appendix letter (appendices are designated
alphabetically). The second part should denote the
numeric sequence of pages within the appendix
(Examples: A-1, A-2, . . . . B-1, B-2 . ..)..
(5) Basis Appendix Page Numbering. All page numbers for
the Bases Appendix should begin with the word “Basesn
followed by the subsection number that it supports
(see examples below).
Attachment 1
Page 48
DOE 5480.22
2-25-92
Bases 2 l-l, Bases 2 1-2, . . . .
Bases 3/4 O-1, Bases 3/4 O-2 . . . .
Bases 3/4 1-1, Bases 3/4 1-2 . . . .
b. Paragraph Numbering for Sections 1 and 5. Paragraphs
should be numbered with successive Arabic numbers -
separated by decimal points. The following scheme should
be used for subordination of paragraphs:
Section 36
Example Paragraph Numbering
1.1 (Major Paragraph)
1.1.1 (First Subordinate Paragraph)
1.1.1.1 (First Subdivision of First Subordinate
Paragraph)
1.2 (Second Major Paragraph)
c. Numbering of Safety Limits (Section 2), Limiting Control
Settings, and Limiting Conditions for Operation (Section
3)
(1)
(2)
(3)
(4)
(5)
All SLs, LCSs, and LCOs should begin with 2. or 3.,
then the number associated with the group, which will
be followed by the number of the requirement.
Complex systems may require further subdivision.
Example:
2.11 Reactor Coolant Circulation System
3.10.2.1 Diesel Generator Fuel Oil Tank
Number Safety Limits beginning with 2.1 and
continuing with 2.2, 2.3, . . . . Any subdivision of
Safety Limits should be numbered with an additional
number added to the number of the SL; for example,
2.1.1, 2.1.2, . . . .
Number Operating Limits beginning with 3.1 and
continuing with 3.2, 3.3, . . . . Any subdivisions of
OLs should be numbered with an additional number
added to the number of the LCS, for example, 3.2.2,
3.2.3, . . . .
Operating Limits should be grouped by principal
system or function and each OL within a group should
be numbered sequentially. Limiting Control Settings
are normally the first requirements within a group.
For reactors, normally all OLs can be put into the
following groups:
DOE 5480.22
2-25-92
Attachment 1
Page 49
(6)
0.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Application
Reactivity Control
Core Power Distribution
Instrumentation
Coolant System
Engineered Safety Systems
Confinement/Containment
Plant Systems”
Electrical Systems
Experiment Facilities
10. Radwaste Systems
11. Special Tests
12. Refueling Requirements
13. Spent Fuel Pool Requirements
For less complex reactor facilities, omit groups
above (except “O”) as appropriate and retain the same
numbering scheme to indicate that a group was
omitted. Add other groups as necessary.
For nonreactor nuclear facilities, standardized
grouping of requirements is more difficult because of
the diversity of facilities, however, many facilities
will have the following:
0. Applicability
1. Criticality, Radioactivity, and Hazardous
Material Alarm Systems
2. Confinement/Ventilation
3. Fire Detection and Suppression
4. Emergency Power
5. Chemical Systems
DOE 5480.22Attachment 1
Page 50 2-25-92
6. Instrumentation
7. Experimental Facilities
(7) ACTION Statements should be lettered with upper case
letters. Subdivisions of ACTION Statements should be
numbered, 1., 2., . . . .
(8) See Figure 11 for sample numbering of LCO and ACTION
Statements.
d. Numbering of Surveillance Requ irements (Section 4)
(1) Surveillance Requirements should be designated with
numbers beginning with 4.
(2) The second number should correspond to the same
grouping scheme utilized for the LCS or the LCO, and
the third number in the sequence indicates the LCS or
the LCO which this surveillance principally supports.
Hence, the Surveillance Requirements will have
numbers the same as the LCS or the LCO which they
support except for the first number which will be a
“4” instead of a “3.”
(3) Subdivisions should be identified with a lowercase
letter and indented; further subdivisions should be
numbered with a number and “close parenthesis" (eg.,
1), 2), . ..) and should be indented from the letter
(see Figure 11 for an example).
e. Numbering of Bases (Bases Appendix). Bases are numbered
in accordance with the number of the SL, LCS, or LCO
which they support.
Section 37
f. Table Numberi nq
(1) Table numbers
the number of
followed by a
numbers. See
samples.
in Sections 2 and 3/4 should begin with
the specification to which they apply,
dash, and then sequential Arabic
the example below and Figure 15 for
Example Table Numbers for Section 3/4
Table 3.3.l - 1. Title
(Sheet 1 of 6)
Table 4.2.5 - 1. Title
(2) Numbers of tables in the Basis appendix should begin
with the words “Bases Table” and the subsection
DOE 5480.22
2-25-92
Attachment 1
Page 51
number that it supports, followed by a dash and then
sequential Arabic numbers.
Ex ample Table Numbers for Basis Appendix
Bases Table 3/4.1-1
Bases Table 3/4.2-1
(3) Table numbers in all other sections should begin with
the applicable section number followed by a dash and
then sequential Arabic numbers.
Example Table Numbers for Sections Other Than Bases
and Sections and 3/4
Table 5-1.
Table 5-2.
Attachment 1 DOE 5480.22
Page 52 2-25-92
3/4.5 INSTRUMENTATION
3.5.1 REACTOR TRIP SYSTEM INSTRUMENTATION
LCO: As a minimum, the Reactor Trip System Instrumentation
channels of Table 3.5-1 shall be OPERABLE.
APPLICABILITY: AS shown in Table 3.5-1.
ACTIONS: As shown in Table 3.5-1.
SURVEILLANCE REQUIREMENTS
4.5.1 Each Reactor Trip System instrumentation channel and
automatic trip logic shall be demonstrated OPERABLE
by the performance of the Reactor Trip System
Instrumentation Surveillance Requirements specified
in Table 4.5-1.
(continued)
Figure 15 Example of LCO
Page 1 of 4
Attachment 1
Page 56
DOE 5480.22
2-25-92
(4) For multiple-page tables in all sections, use
the phrase “(Sheet 1 of , Sheet 2 of
etc.)” after the table title (see example for f
(1) above).
(5) All tables should be located as near as
possible after the place where they are first
referenced. Where tables and figures are both
referenced in a specification, present the
tables before the figures.
g. Figure Numbering
(1) Figure numbers in Sections 2 and 3/4 should
begin with the number of the requirement to
which they apply, followed by a dash, then
sequential Arabic numbers.
Example Figure Numbers for Section 3/4
Figure 2.1.1-1 Title
Figure 3/4.2.1-1. Title
(Sheet 1 of 6)
Figure 3/4.2.5-1. Title
(2) Figure numbers in the Basis appendix should
begin with the words “Bases Figure” and the
subsection number that it supports, followed by
a dash and then sequential Arabic numbers.
Example Figure Numbers for Bases Appendix
Bases Figure 2.1-1
Bases Figure 3/4.2-1
(3) Figure numbers in. al 1 other sections should
begin with the applicable section number
followed by a dash and then sequential Arabic
numbers.
Example Figure Numbers for Sections Other Than
Sections 2 and 3/4 and Appendix
Figure 5-1.
Figure 5-2.
(4) For multiple-page figures in all sections, use
the phrase “(Sheet 1 of , Sheet 2 of _,
etc. )” after the figure title.
DOE 5480.22
2-25-92
3.2
Attachment 1
Page 57
(5) All figures should be located as near as
possible after the place where they are first
referenced.
Page Headings. Use upper case letters in the page
headings for consistency and to set the heading apart
from the body of the requirement. The heading
information is provided as a convenience for the user in
locating requirements and should not be emphasized by
bold face type. Separate the heading information from
the body of the requirement by a solid horizontal line
across the entire page (see Figures 9 and 11).
Section 38
Continuation Between Pages. Use the word “continued” in
parentheses and in lower case letters to denote
continuation of a grouping of action statements,
surveillances, or Basis to the next page (see Figure 11
and Example 3 below).
Example Page Headings
Example 1:
3/4.4 REACTOR COOLANT SYSTEM
3.4.2 PRESSURE PROTECTION SETPOINTS
Example 2:
3/4.6 CONFINEMENT SYSTEMS
3.6.2 AIR CLEANING SYSTEM
Example 3:
3/4.6 CON INEMENF T SYSTEMS
4.6.1 SURVEILLANCE REQUIREMENTS
(continued)
3.3 Highlighting. Various forms of highlighting are used in
the example shown in Figure 15 to improve visibility of
the information presented. These include:
a. Bolding. Bold type is used to highlight the major
headings, table column headings, and to emphasize
especially important information. Notes are also
in bold type for added emphasis.
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b. Spatial Dedication. The SL, LCS, and LCO are
offset or indented so that this information stands
out from the surrounding text. Recognition and
separation of the SL, LCS, and LCO requirements
allows this information to be more quickly and
easily located and scanned without interference
from the surrounding text. Also, the SL, LCS, and
LCO mode applicability headings are separated by
extra “white space,” allowing for quick recognition
and scanning of specific information.
c. Delimiters. Delimiters function as visual cues for
the user, signaling the beginning and/or end of
specific segments of information. Delimiters
should take the form of two closely spaced
horizontal lines. Separation of two independent
requirements on the same page would call for the
use of delimiters, for example.
d. Underscoring. Underscoring is an effective way of
adding emphasis to specific information when
properly used. However, it tends to lose its
effectiveness when used too much. For this reason,
underscoring is used in the example only to add
emphasis to logical connectors (AND, OR, BUT,
etc.).
3.4 Use of Log ic Terms. Logic terms (AND, OR, IF, BUT, etc.)
should be used as little as possible. In preparing TSR,
try to avoid logic terms. When they must be used, the
following guidelines apply: All logic terms should be
underscored, in uppercase bold type, and flush left
between the two (or more) sets of connected conditions,
and:
a.
b.
c.
AND is used to connect two or more sets of criteria
that must both (all) be satisfied for a given
logical decision. If more than two sets of
conditions are required, a list format is
preferable.
OR should be used to denote alternative
combinations or conditions, meaning either one, or
the other. Because it is easily misinterpreted,
the use of OR should be avoided whenever possible.
When action steps are continent upon certain
conditions, terms such as IF, BUT, IF NOT, etc.,
may be used as appropriate, however, use of such
terms should be kept to a minimum. Where possible,
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3.5
3.6
3.7
3.8
Attachment 1
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rewrite the condition so the logic term is not
needed.
Notes and Cautions. Notes and Cautions should not
normally occur within the context of the TSR. The TSR in
itself is a compendium of potential cautions, and Notes
often indicate that the basic explanation is inadequate.
When Notes or Cautions are necessary, the following
applies:
Section 39
a. Cautions shall be placed immediately before the
information to which they refer. Notes may be
placed before or after the text they amplify as is
most appropriate. All notes and cautions should be
preceded by the centered heading “NOTE” or
"CAUTION" in uppercase bold type. Text in the note
or caution statement should be bold type, indented
from both sides of the page. Cautions should be
delimited from standard text.
b. Notes and Cautions pertaining to information inside
the ACTIONS and SURVEILLANCE REQUIREMENTS
statements should be placed immediately before the
information to which they apply.
Tables. When the volume of tabular information to be
presented is small, consider integrating the information
in text rather than using a separate table. When tables
are necessary, they should be located as conveniently as
possible for the user. They should have a formal title
and number.
Body Of Section 1 - Use and Application. This section is
expected to be mostly text, so should take the form of
paragraphs numbered in accordance with Section II.3.1.b.
Other forms of input (tables, notes, etc.) should follow
the guidance outlined in Section II.3.1.
ody of Section 2 - Safety Limits. Safety Limits should
be presented in the format shown in Figure 9.
The page heading, as described in Section II.3.2,
subparagraph 3.2, should be to the left margin of the
page. Below the, heading, and indented, should be the
letters “SL:” (in al 1 bold, upper case letters), followed
on the same line by a colon and the requirement. If the
requirement has subdivisions, they should also be
indented.
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Below the requirement, with sufficient space left above
to make the requirement stand apart, the word
“APPLICABILITY:” should appear at the left margin and in
bold upper case letters. On the same line should be the
applicability modes or other conditions.
Below the Applicability statement with sufficient space
so as to make it obviously separate, should appear the
word “ACTIONS” in bold, upper case letters. Immediately
below “ACTIONS” should be the ACTION Statements, which
should be indented from the left margin and lettered with
capital letters. Subdivisions of the ACTION Statements
should be further indented and numbered.
3.9 Body of Section 3/4 - Operational Limits and Surveillance
Requirements should be presented in the format shown in
Figures 10 and 11. The page headings should be as
described in Section 11.3.2, above and should be to the
left hand margin of the page. Below the heading and
indented should be the letters “LCS” or “LCO” in bold
upper case letters. This should be followed on the same
line by a colon and then the requirement. For simple
requirements, only a sentence or two may suffice while
for a complex requirement, subdivisions may be necessary.
Use upper case letters for the main divisions and
indented numbers as the first subcategory. Use indented
lower case letters for the next division, if necessary.
If further division appears to be necessary, consider
making an entire new requirement within the main group.
Below the requirement, with sufficient space left above
to make a clear separation, the word “APPLICABILITY:”
should appear at the left margin and in bold upper case
letters. On the same line should be the applicability
modes or other conditions.
Section 40
Below the APPLICABILITY statement, also with sufficient
space left above to make a clear separation, should
appear the word “ACTIONS:” in bold upper case letters.
Immediately below “ACTIONS:” and indented should be the
ACTION Statements, the main divisions of which should be
numbered, and subdivisions should be lettered.
Below the ACTION statements, with sufficient space left
above to make a clear separation, should appear the words
“SURVEILLANCE REQUIREMENTS:” in bold upper case letters
at the left margin. Below “SURVEILLANCE REQUIREMENTS:”,
and indented, should be the number of the surveillance,
as defined in Section II.3.1. The statement of the
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surveillance(s) should follow, with subdivisions
indented.
3.10 Body of Section 5 - Administrative Controls. The body of
this section is expected to be mostly text, possibly with
tables, so it should take the form of paragraphs numbered
in accordance with Section II.3.1.b, and as noted on
Section II.3.1, for other types of input.
3.11 Bodv of Basis_ Appendix The body of the Bases appendix
should be presented in the format shown in the example of
Figure 16. The page heading should be that described in
Section 11.3.2, with the number of the SL, LCS, or LCO
and the same title used in that requirement.
Below the requirement number and title (3.3 .2. BORON
INJECTION SYSTEM in Figure 16, for example), the word
BASIS in bold upper case letters should be at the left
margin and underlined with a delimiter. Immediately
below the delimiter are the Bases themselves.
3.12 Changes to the TSR. Changes to the TSR shall be
designated in the following manner: (a) a list of pages
in effect with page number and date, (b) a record of
revision pages, (c) sidebar changes in the TSR text, and
(d) each page should contain the page number, document
number, and effective date.
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3.3 REACTIVITY CONTROL
3.3.2 BORON INJECTION SYSTEM
BASES
Each section would normally be in paragraph form and should include the
information required by Section 11.2.5.
Figure 16 Example of Basis Appendix
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III. WRITER’S GUIDE
1. Introduction. Style in writing is the cumulative effect of the
writer’s choice of words and phrases, sentence structure, emphasis,
and arrangement of material. In any technical writing, the style
must not intrude on the communication of facts. Good technical
writing style is not apparent until it falters. Inconsistent or
inappropriate wording, sentence structure, or punctuation distracts
the user and distorts meaning. This section contains style
guidelines for writing Technical Safety Requirements. They apply
to all sections of the requirements. Their consistent use will
ensure that the information in Technical Safety Requirements is as
clear, concise, and usable as possible.
2. Words and Phrases.
2.1 Use Familiar Words. Brief, clear writing increases reading
speed and comprehension. To make writing readable and
understandable, use familiar words. Such words tend to be
short and used
meaning gained
Less familiar:
approximately
often in conversation. There is rarely any
by using a longer, less familiar word.
Familiar:
about
utilize, employ use
accumulation buildup
prior to before
however but
proceed go on, go
facilitate help, ease
additionally too, also
2.2 Use Words With Precise Meanings. Words and phrases such as
the following do not have precise meaning for the user and
should be avoided:
Section 41
immediately
approximately
as soon as possible
initiate at once
When a word or phrase is to be used as the basis for
compliance requirement, be precise. Do not use words that
cannot be precisely interpreted.
2.3 Verbs. Use the standards in the following paragraphs as
guidelines for the correct use of verbs and verb forms.
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Strong Versus Weak Verbs. DO not smother strong verbs by
turning them into objects of weaker verbs.
Smothered: Strong:
make an inspection inspect
perform a verification verify
take the measurement measure
Strong Versus Long Verbs. Use one-syllable verbs instead of
two-syllable verbs. Use one- and two-syllable verbs instead
of verbs with several syllables. Unless technical meaning
demands the longer verb, there is no good reason to use it.
Long: Short:
function work
accomplished done
accumulate build up
perform do, make, take, run
prevent...from keep...from
fabricated made
2.4 Articles. Articles are a, an, and the. Use articles in
descriptive text only as needed for clarity and flow of
thought. The following guidelines apply to use of articles.
Do not use articles in:
a. Titles of documents, chapters, sections, paragraphs,
Figures, tables, appendices, or other document elements.
b. Table column headings.
c. Table entries and tabular instructions unless a passage
cannot be clearly understood without articles.
d. Procedural steps and instructions. Keep procedural
information direct and concise by omitting articles,
unless a
them.
3. SENTENCE STRUCTURE
3.1 General Rules
passage cannot be clearly understood without
a. Arrange words in sentences and sentences in paragraphs so
that the meaning is clear on first reading.
b. Make sentences concise by omitting useless words.
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c.
d.
e.
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Rewrite sentences that may be confusing, awkward,
illogical, or obscure to the reader.
Break up long, straggling, complex sentences into two or
more short ones.
Do not include words, phrases, or clauses that do not
relate directly to the main thought of the sentence.
3.2 Sentence Length. Short sentences and clauses make writing
more readable and understandable. Not all long sentences are
hard to understand, but length and difficulty tend to be
related. Sentence length can be varied to avoid monotony,
however, examine long sentences to see if they can be
shortened. Change long sentences to shorter ones. Change
clauses to phrases, clauses or phrases to single adjectives or
adverbs, and long phrases to shorter ones. For example:
Long:
Better:
During the performance of an ANALOG CHANNEL
OPERATIONAL TEST, it is necessary to check the
entire instrumentation loop (excluding sensor)
including the function of an annunciator light;
however, during performance of a CHANNEL
CALIBRATION, it is not necessary to ensure that all
annunciators function properly.
When performing an ANALOG CHANNEL OPERATIONAL TEST,
the entire instrumentation loop (except sensor),
including the annunciator light, must be checked.
When performing a CHANNEL CALIBRATION, annunciators
need not be checked.
If, in the course of testing of valve stroke times,
it is found that any valve exhibits a stroke time
that is 25 percent greater than the stroke time
measured during a previous test of the same valve,
the test frequency of the valve shall be increased
to once per month until corrective action is taken,
at which time the original test frequency shall be
resumed.
Long:
Section 42
Better: When testing valve stroke times, if any valve is
found to have a stroke time 25 percent greater than
when previously tested, increase its test frequency
to once per month. When corrective action is
taken, resume the original test frequency.
3.3 Positive Versus Negative Sentences. Where possible, use
positive sentences instead of negative sentences.
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Negative: High steam pressure is not uncommon under such
conditions.
Positive: High steam pressure is common under such
conditions.
Negative: If at least one pump cannot be put back in
service, . . . .
Positive: If no pump can be put back in service, . . . .
3.4 Active Versus Passive Sentences. Where possible, use
sentences with active instead of passive verbs.
Passive: System pressure is relieved by PORVs when . . . .
Active: PORVs relieve steam pressure when . . . .
Passive: This limitation provides assurance that . . . .
Active: This limitation ensures that . . . .
4. BREVITY IN WRITING
4.1 Unnecessary Words and Phrases. Economy in writing is reached
by omitting needless words and phrases and by phrasing
information succinctly. Below are examples of ways to
simplify sentences and phrases.
Wordy:
Better:
Wordy:
Better:
Fire Detectors that are used to actuate Fire
Suppression Systems represent a more critically
important component of the facility’s Fire
Protection Program than detectors that are
installed solely for early fire warning and
notification.
Fire Detectors that actuate Fire Suppression
Systems are more important to the facility’s Fire
Protection Program than detectors used solely for
early fire warning.
Inservice inspection of heat exchangers is
essential in order to maintain surveillance of the
conditions of the tubes in the event that there is
evidence of mechanical damage or progressive
degradation due to design, manufacturing errors, or
inservice conditions that lead to corrosion.
Inservice inspection of heat exchangers is required
to ensure that there is no damage or progressive
degradation of the tubes caused by design or
manufacturing errors, or corrosion.
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Wordy: Better:
in the event that... if...
in order to... to...
for the purpose of... for, to...
it is dependent upon... it depends on...
Each of the curves shows... Each curve shows...
give consideration to consider
initiated immediately started at once
more frequent intervals more frequently
In the following examples, the underlined words can be left
out of the sentences with no loss in meaning but with a gain
in economy of expression. The underlined words add nothing to
the sense of the sentences.
The purpose of the drains is to remove water from the turbine.
Two alarm signals serve to indicate that the pump is not
working.
The thermocouples are designed to sense metal temperature
variations.
The phrase relationship between the generator output and the
applied load is very critical.
A pressure switch located on the seal oil supply unit . . . .
Do not remove any tools from the work area without proper
authorization.
4.2 Abbreviations. Acronyms. and Symbols. Use only those
abbreviations, acronyms, and symbols-that are clearly
recognized by the user. Avoid abbreviations of words,
phrases, or names, unless the system or component is
frequently and commonly abbreviated. Following are common
symbols that should be used in Technical Safety Requirements.
=
Section 43
Except for °F and
text. When space
symbols should be
Symbol
%
°F
°C
+
<
°C, symbols should be avoided in narrative
is limited, such as in tables or figures,
used for brevity and to save space.
Meaning
Equal to
P e r c e n t
Degrees Fahrenheit
Degrees Celsius
Plus
Minus
Less Than
-
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\ Less Than or Equal To
^
> Greater Than
Greater Than or Equal To
4.3 Capitalization . In general, standard American English rules
for capitalization should be used. The following specific
guidelines apply to writing of Technical Safety Requirements:
a. Use of Upper Case Letters. Write the following in upper
case letters:
(1) Defined terms
(2) Requirement titles and systems when used as page or
LCO headings
(3) Acronyms
(4) The word NOTE when used as a heading
(5) Logic terms used as connectors, e.g., AND, OR,
EITHER, etc.
(6) Table column headings
(7) Headings in the LCOs and Bases (Refer to the
example in Figures 9 and 14 of Part II
“Preparation”)
b. Use of Initial Upper Case Letters (First Letter in Each
Word). Initially capitalize the following:
(1) Each word in system titles
(2) First word in a phrase used in a list
(3) Each word in component nomenclature
(4) Each word in a system or component
(5) Proper nouns
(6) Each word in major system names
(7) Figure and table titles
reference
4.4 Punctuation . In general, use standard American English rules
for punctuation. Refer to Figure 9 of Part II for an example
of punctuation in Technical Safety Requirements. Do not use
periods in the Action Statement tables. Use periods as
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appropriate in the surveillance requirement tables. Do not
use contractions of words. For example, use “cannot” rather
than “can’t” or “is notn rather than “isn’t.”
4.5 Units of Measure. Follow the guidelines below when writing
units of measurement:
a. Use the same units of measurement that appear on
instruments or gauges whenever possible.
b. Use units of measure that are familiar to the operators.
c. Use Arabic numerals unless specific equipment dictates
otherwise.
4.6 Tolerances. Follow the guidelines below when writing
tolerances:
a. Whenever possible, always provide acceptable tolerances
for given values.
b. Give tolerances in immediately understood terms. DO not
use the ± symbol to express tolerances. When possible,
state the value as an acceptable range, i.e., ‘between xx
and xx.” The ± symbol may be used as a heading where a
list of values is to be entered, e.g.:
Pressure (± l0% )
psid
psid
In this application, the ± symbol is used as an
acceptable tolerance for calculating actual values, that
should then be written as acceptable ranges in the table.
4.7 Formulas and Calculation s. Formulas and calculations should
be avoided in Technical Safety Requirements when possible.
Unless the formula or calculation is part of an instruction or
procedure that must be performed by the user, formulas of
calculations can usually be avoided.
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IV. CONVERSION OF TS/OSR TO TSR
Chapter II provides guidance on the preparation of TSR. This Chapter
gives contractors guidance on conversion of existing TS and OSRs into
TSRs.
Section 44
1. Conversion of Existing Technical Specifications. For reactor
facilities with existing TS which are not formatted in accordance
with this Order, the conversion can be assisted with the use of a
screening form. This form would be essentially a checklist to be
applied against each existing requirement. The form would pose
five questions, one question for each of the five criterion of
Section II.2.3.g. Any requirement which generates a positive
response to any of the five questions must be included in the TSR.
If a specification is to be transferred to the TSR, it can be
categorized into Safety Limit, Limiting Control Setting, or
Liimiting Condition for Operation according to the criteria in
Section II.2.3.g. Figure 17 provides a sample screening form for
Technical Specifications..
2. Conversion of Existinq Operational Safetv Requ irements. For
nuclear facilities with existing OSR which are not formatted in
accordance with this order, the conversion can be assisted with the
use of a screening form. This form would be essentially a
checklist to be applied against each existing requirement. The
form would pose five questions, one question for each of the five
criterion of Section II.2.3.h, page 32, of this document. Any
requirement which generates a positive response to any of the five
questions must be included in the TSR. If a requirement is to be
transferred to the TSR, it can be categorized into Safety Limit,
Limiting Control Setting, or Limiting Condition of Operation
according to the criteria in Section II.2.3.h. Figure 18 provides
a sample screening form for Operational Safety Requirements.
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TECHNICAL SPECIFICATION SCREENING FORM
1. TECHNICAL SPECIFICATION NUMBER:
2. EVALUATION: Is the technical specification applicable to:
YES NO
YES NO
YES NO
YES NO
YES NO
a. Installed instrumentation that is used to detect and
indicate in the control room or other control location a
significant degradation of the any of the physical
barriers that prevent the uncontrolled release of
radioactive or other hazardous materials, or;
b. A structure, system, or component that is part of the
primary success path and which functions or actuates to
mitigate an accident or transient that either involves
the assumed failure of, or presents a challenge to, the
integrity of a radioactive or other hazardous material
barrier, or;
c. A process variable that is an initial condition to a
design basis accident or transient that involves the
assumed failure of, or presents a challenge to, the
integrity of a radioactive or other hazardous material
barrier, or;
d. Experiments or experimental facilities that could
provide a path for the uncontrolled release of
radioactive or other hazardous material or that could
affect criticality.
e. Systems and equipment used to handle fissile material
outside the reactor core.
If the answer to any one of the above questions is “YES,” then the
technical specification should be included in the Technical Safety
Requirements, unless justified otherwise.
Figure 17 Example Technical Specifications Screening Form
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3. DISCUSSION: Here explain why the specification does or does not
meet the criteria and note any special considerations why a
particular specification should or should not be included in the
TSR. This part should also include the following specific
information:
Section 45
a. If the specification is found to meet criteria “b” or “c,”
provide examples of the accidents or transients for which
the specification represents an initial condition or which
it is assumed to mitigate.
b. Where a component, structure, or system has more than one
purpose or function that is addressed in other technical
specifications, reference the other specification(s) for the
other function(s).
c. If the specification does not meet any of the criteria, a
short description of the requirements should be provided.
4. CONCLUSION:
This technical specification is included in the Technical
Safety Requirements.
This technical specification is not included in the
Technical Safety Requirements.
Figure 17 Example Technical Specifications Screening Form
Page 2 of 2
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OPERATIONAL SAFETY REQUIREMENTS SCREENING FORM
1. OPERATIONAL SAFETY REQUIREMENTS
NUMBER:
2. EVALUATION: Is the operational safety requirement applicable to:
YES NO
YES NO
YES NO
YES NO
YES NO
a. InstalLed instrumentation that is used to detect, and
indicate in the control room or other control location,
a significant degradation of the physical barriers which
prevent the uncontrolled release of radioactive or other
hazardous materials, or;
b. A structure, system, or component which functions or
actuates to mitigate an accident or transients that
either involves the assumed failure of, or present a
challenge to, the integrity of a physical barrier which
prevents the uncontrolled release of radioactive or
other hazardous materials, or;
c. A process variable that is an initial condition for
those design basis accidents or transient analyses that
involves the assumed failure of, or presents a challenge
to, the integrity of a radioactive or other hazardous
material barrier, or;
d. Experiments and experimental facilities that could
provide a path for the uncontrolled release of
radioactive or other hazardous materials, or that could
affect critically, or;
e. Systems and equipment used to handle fissile materials.
If the answer to any one of the above questions is “YES," then the
operational safety requirement should be included in the Technical
Safety Requirements unless justified otherwise.
Figure 18 Example Operational Safety Requirements Screening Form
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OPERATIONAL SAFETY REOUIRFMENTS SCREENING FORM (continued)
3. DISCUSSION: Explain why the requirement does or does not meet the
criteria and note any special considerations why a particular
requirement should or should not be included in the TSR. This
part should also include the following specific information:
a. If the requirement is found to meet criteria “b” or “c,”
provide examples of the accidents or transients for which
the requirement represents an initial condition or which it
is assumed to mitigate.
b. Where a component, structure, or system has more than one
purpose or function that is addressed in other operational
safety requirements, reference the other requirement(s) for
the other function(s).
c. If the requirement does not meet any of the criteria, a
short description of the requirements should be provided.
4. CONCLUSION:
This operational
Technical Safety
This operational
Technical Safety
safety requirement
Requirements.
safety requirement
Requirements.
is included in the
is not included in the
Figure 18 Example Operational Safety Requirements
Screening Form
Page 2 of 2