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:
system piped from a storage reservoir if practical. Service or rated operating life should be a minimum of one-half hour for the self-contained units. At least two extra air bottles should be located on site for each self-contained breathing unit. In addition, an onsite 6-hour supply of reserve air should be provided and arranged to permit quick and complete replenishment of exhausted supply air bottles as they are returned. If compressors are used as a source of breathing air, only units approved for breathing air should be used; compressors should be operable assuming a loss of offsite power. Special care must be taken to locate the compressor in areas free of dust and contaminants. (8) Where total flooding gas extinguishing systems are used, area intake and exhaust ventilation dampers should be controlled in accordance with NFPA 12, "Carbon Dioxide Systems," and NFPA 12A, "Halon 1301 Systems, to maintain the necessary gas concentration. e. Lighting and Communication Lighting and two-way voice communication are vital to safe shutdown and emergency response in the event of fire. Suitable fixed and portable emergency lighting and communication devices should be provided as follows: (1) Fixed self-contained lighting consisting of fluorescent or sealed-beam -units with individual 8-hour-minimum battery power supplies should be provided in areas that must be manned 1.120-13 for safe shutdown and for access and egress routes to and from all fire areas. Safe shutdown areas include those required to be manned if the control room must be evacuated. (2) Suitable sealed-beam battery-powered portable hand lights should be provided for emergency use by the fire brigade and oth'r operations personnel required to achieve safe plant shutdown. (3) Fixed emergency communications independent of the normal plant communication system should be installed at preselected stations. (4) A portable radio communiLations system should be provided for use by~the fire brigade and other