Document: NRC Regulatory Guide
Document ID: edb75cf4-27e1-4166-989c-25781bd48b98
Document Type: regulatory_guide
Title: Fire Protection Program for Nuclear Power Plants During Decommissioning and Permanent Shutdown (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2007/ML20078K920.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.191
CFR Part: 
CFR Title: 

Content:
ntended. The barrier control program should allow for redesignation, modification, or removal of barriers, based on changes to the facility and hazards (i.e., fire and radiological) as the facility is decommissioned. NFPA 221, “Standard for High Challenge Fire Walls, Fire Walls, and Fire Barrier Walls” (Ref. 31), contains additional information and guidance. 3.7 Control of Structures, Enclosures, and External Areas 3.7.1 Control of Temporary Enclosures and Structures The fire protection program should address fire hazards created by the construction and location of temporary enclosures and structures. The fire protection program should evaluate the need for automatic or manual fire suppression capability inside and outside each temporary structure. The use of combustible construction materials should be minimized and controlled as specified in Regulatory Position C.3.4 in this guide. Chapter 4, “Temporary Construction, Equipment and Storage,” of NFPA 241 provides additional information and guidance for controlling the fire hazards associated with temporary structures. Temporary structures should not present a fire exposure hazard to plant structures containing radioactive materials or radioactive contamination, or to contaminated waste material accumulation or storage areas. NFPA 80A, “Recommended Practice for Protection of Buildings from Exterior Fire Exposures” (Ref. 32), provides guidance for the appropriate separation of structures to minimize the fire exposure. Tents or other membrane-type structures should be constructed of noncombustible, fire-retardant material. Membrane-type materials should be certified as conforming to the requirements of the large-scale test described in NFPA 701. 3.7.2 Preventing Fire from Exposing Structures and Materials The fire protection program should identify controls to protect structures containing radioactive materials from an exposure fire. The fire hazard presented by transient combustibles, including stored