Document: NUREG-0800
Document ID: f0fdf572-145b-48ca-b0eb-03ce5f350473
Document Type: srp
Title: Nearby Facilities
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0327/ML032740044.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.6
CFR Part: 
CFR Title: 

Content:
and extinguishing of fires (firefighting). Manual fire suppression is the use of hoses, portable extinguishers, or manually actuated fixed systems by plant personnel. Automatic fire suppression is the use of automatically actuated fixed systems such as water, Halon, or carbon dioxide systems. Fire Watch — Individuals responsible for providing additional (e.g., during hot work) or compensatory (e.g., for system impairments) coverage of plant activities or areas for the purposes of detecting fires or for identifying activities and conditions that present a potential fire hazard. The individuals should be trained in identifying conditions or activities that present potential fire hazards, as well as the use of fire extinguishers and the proper fire notification procedures. Fire Zones — Subdivisions of fire areas. Free of Fire Damage — The structure, system, or component under consideration is capable of performing its intended function during and after the postulated fire, as needed, without repair. Hazardous Material — A substance that, upon release, has the potential of causing harm to people, property, or the environment. Revision 4 - October 2003 40 High Impedance Fault — A circuit fault condition resulting in a short to ground, or conductor to conductor hot short, where residual resistance in the faulted connection maintains the fault current level below the component’s circuit breaker long-term setpoint. Hot Short — Individual conductors of the same or different cables come in contact with each other and may result in an impressed voltage or current on the circuit being analyzed. Hot Work — Activities that involve the use of heat, sparks, or open flame such as cutting, welding, and grinding. Impairment — The degradation of a fire protection system or feature that adversely affects the ability of the system or feature to perform its intended function. Important to Safety — Nuclear power plant structures, systems, and components “important to