Document: NRC Regulatory Guide
Document ID: 8e45dce1-e1e7-4415-b1dd-7e2a610e545b
Document Type: regulatory_guide
Title: Fire Protection for Nuclear Power Plants (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2023/ML20231A835.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.189
CFR Part: 
CFR Title: 

Content:
ce, and modifications; b. continuity of combustible contents, furnishings, building materials, or combinations thereof in configurations conducive to fire spread; c. exposures to fire, heat, smoke, or water, including those that may necessitate evacuation from areas that are required to be staffed for safe shutdown; d. fire in control rooms or other locations having critical functions important to safety; e. lack of adequate access or smoke removal facilities that impedes plant operations or fire extinguishment in plant areas important to safety; f. lack of explosion-prevention measures; g. loss of electric power or control and instrumentation circuits; and h. inadvertent operation of fire suppression systems. Qualified fire protection and reactor systems engineers should perform the fire hazards analysis. Identifying fire hazards and the consequences of an assumed fire starting at any location in the plant requires experienced judgment. Personnel who are thoroughly trained and experienced in reactor safety are able to evaluate the consequences of the assumed fire for nuclear safety. The person conducting the analysis of fire hazards should be thoroughly trained and experienced in the principles of industrial fire prevention and control and in fire phenomena from fire initiation, through its development, to propagation into adjoining spaces. An engineer with the qualifications listed in Regulatory Position 1.6.1.a of this guide should conduct or directly supervise the fire hazards analysis. 1.3 Safe-Shutdown Analysis In accordance with 10 CFR 50.48, each operating nuclear power plant must provide the means to limit fire damage to SSCs important to safety to ensure the ability to safely shut down the reactor. Licensees should develop a safe-shutdown analysis to demonstrate the ability of the plant to safely shut down for a fire in any given area. Regulatory Position 5.1 of this guide identifies the safe-shutdown performance goals. The licensee should demonstrate the