Unbound Engineered Nanoscale Particles (UNP) Worker

A worker who:

(1) Has the potential for inhalation or dermal exposure to UNP due to performing work with potential exposure to UNP;

(2) Routinely spends time in an area due to performance of regular duties in which engineered UNP have the potential to become dispersed in the air or onto surfaces; or

(3) Works on equipment that might contain or bear UNP and that could release UNP during servicing or maintenance.