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:
The licensee should establish written mutual aid agreements between the utility and the offsite fire departments that are listed in the fire hazards analysis and pre-fire plans as providing a support response to a plant fire. These agreements should delineate fire protection authorities, responsibilities, and accountabilities with regard to responding to plant fire or emergency events, including the fire event command structure between the plant fire brigade and offsite responders. The plant fire brigade drill schedule should provide for periodic local fire department participation (at least annually). These drills should effectively exercise the fire event command structure between the plant fire brigade and offsite responders (see Regulatory Position 3.5.1.4 for guidance on the conduct and evaluation of fire brigade drills). Offsite fire department response should be tested periodically, in conjunction with the required exercises of the radiological emergency response plan required by 10 CFR 50.47, “Emergency plans.” 4. Building Design and Passive Features 4.1 General Building and Building System Design This section provides guidance on building layout (e.g., fire areas and zones), materials of construction, and building system design (e.g., heating, ventilating, and air conditioning (HVAC), electrical, lighting, and communication systems) important to effective fire prevention and protection. Regulatory Position 4.2 provides guidance for passive fire barriers. 4.1.1 Combustibility of Building Components and Features According to GDC 3 in Appendix A to 10 CFR Part 50, noncombustible and heat-resistant materials must be used wherever practical throughout the unit. Interior wall and structural components, thermal insulation materials, radiation shielding materials, and soundproofing should be noncombustible. The fire hazards analysis should identify in situ combustible materials used in plant SSCs and specify suitable fire protection. Metal deck roof