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:
d function in conjunction with total containment requirements such as ventilation and control of contaminated liquid and-gaseous release. 1.120-17 In primary containment, fire detection systems should be provided for each fire hazard. The type of detection used and the location of the detectors should be the most suitable for the particular type of fire hazard identified by the fire hazard analysis. A general area fire detection capability should be provided in the primary contain- 6 ment as backup for the above-described hazard detection. To accomplish this, suitable smoke or heat detectors compatible with the radiation environment should be installed. For secondary containment areas, cable fire hazards that could affect sat..Y should be protected as described in Regulatory Position C.4.c(2). The type of detection . stem for other fire hazards identified by the fire hazard analysis should be the most suitable for the particular type of fire hazard. (2) Refueling and Maintenance - Refueling and maintenance operations in containn nt may introduce additional hazards such as contamination control materials, decontamination siupplies, wood planking, temporary wiring, welding, and flame cutting (with portable compressed-gas fuel supply). Possible fires would not necessarily be in the vicinity of fixed detection and suppres- sion systems. Management procedures and controls necessary to ensure adequate fire protection for transient fire loads are discussed in Regulatory Position C.I. Manual firefighting capability should be permanently installed in containment. Standpipes with hose stations and portable fire extinguishers should be installed at strategic locations throughout containment for any required manual firefighting operations. The contain- ment penetrations of the standpipe system should meet the isolation requirements of General Design Criterion 56 and should be Seismic Category I and Quality Group B. Adequate self-contained breathing apparatus should be provided