Document: NUREG-0800
Document ID: 2b0752f4-9104-408c-b400-d0ec931a3dbf
Document Type: srp
Title: FIRE PROTECTION PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350030.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.1
CFR Part: 
CFR Title: 

Content:
rs using onsite capability. Design basis Both trains of equipment necessary for mitigation of accidents consequences following design basis accidents may be damaged by a single exposure fire. The most stringent fire damage limit should apply for those systems that fall into more than one category. Redundant systems used to mitigate the consequences of other design basis accidents but not necessary for safe shutdown may be lost to a single exposure fire. However, protection shall be provided so that a fire within only one such system will not damage the redundant system. 9.5.1-18 Rev. 2 - July 1981 The fire hazards analysis should separately identify hazards and provide appropriate protection in locations where safety-related losses can occur as a result of: (1) Concentrations of combustible contents, including transient fire loads due to combustibles expected to be used in normal operations such as refueling, maintenance, and modifications; (2) Continuity of combustible contents, furnishings, building materials, or combinations thereof in configurations conducive to fire spread; (3) Exposure fire, heat, smoke, or water exposure, including those that may necessitate evacuation from areas that are required to be attended for safe shutdown; (4) Fire in control rooms or other locations having critical safety-related functions; (5) Lack of adequate access or smoke removal facilities that impede fire extinguishment in safety-related areas; (6) Lack of explosion-prevention measures; (7) Loss of electric power or control circuits; (8) Inadvertent operation of fire suppression systems. The fire hazards analysis should verify that the NRC fire protection program guidelines have been met. The analysis should list applicable elements of the program, with explanatory statements as needed to identify location, type of system, and design criteria. The analysis should identify and justify any deviations from the regulatory guidelines. Justification for deviations from the