Document: NRC Regulatory Guide
Document ID: 80776ca5-a83d-4667-9a94-0bffa1befa91
Document Type: regulatory_guide
Title: Fire Protection Guidelines for Nuclear Power Plants (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1221/ML12216A013.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.120
CFR Part: 
CFR Title: 

Content:
confinement, suppression, administrative controls, fire brigade organization, inspection and maintenance, training, quality assurance, and testing. Fire Rating - the endurance period of a fire barrier or structure; it defines tAe period of resistance to a standard fire exposure before the first critical point in behavior is observed (see NFPA 251). Fire Suppression - control and extinguishing of fires (firefighting). Manual fire suppres- sion 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 Zones - the subdivisions of fire areas in which the fire suppression systems are designed to combat particular types of fires. Noncombustible Material a. material, no part of which will ignite and burn when subjected to fire. b. material having a structural base of noncombustible material, as defined in a., with a surfacing not over 1/16 inch thick that has a flame spread rating not higher than 50 when measured using ASTM E-84 Test, "Surface Burning Characteristics of Building Materials." Raceway - refer to Regulatory Guide 1.75. Restricted Area - any area to which access is controlled by the licensee for purposes of protecting individuals from exposure to radiation and radioactive materials. Safety-Related Systems and Components - systems and components required to shut down the reactor, mitigate the consequences of postulated accidents, or maintain the reactor in a safe shutdown condition. Secondary Containment - a structure that completely encloses primary containment, used for controlling containment leakage. Sprinkler System - a network of piping connected to a reliable water supply that will dis- tribute the water throughout the area protected and will discharge the water through sprin- klers in sufficient quantity either to extinguish the 'fire entirely or to prevent its spread. The system,