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:
provides an acceptable performance-based fire protection program. NFPA 805, Chapter 5, applies to the power block areas of nuclear power plants that have permanently ceased operations. The power block areas are defined in the licensee’s approved NFPA 805 fire protection program. The power block comprises structures that have equipment required for nuclear plant operation. These structures generally include the containment, auxiliary building, service building, control building, fuel building, radwaste, water treatment, turbine building, and intake structure. However, the buildings that make up the plant’s power block areas during decommissioning may change commensurate with the SSCs required to meet the nuclear safety performance criteria during decommissioning. As indicated in the guidance in Regulatory Position C.1.4 of this guide, the power block may also include facilities that contain radiological hazards or ancillary facilities that directly support the decommissioning process (e.g., onsite waste storage). 6.1 NFPA 805 Nuclear Safety Performance Criteria During decommissioning, NFPA 805 fire protection program elements should be maintained commensurate with the changes in fire hazards and the potential release of hazardous and radiological materials to the environment. The fire protection systems and features required to protect SSCs to meet the nuclear safety performance criteria of Section 1.5.1, “Nuclear Safety Performance Criteria,” of NFPA 805 should continue to be maintained during decommissioning. Decay heat removal systems (e.g., the spent fuel pool cooling system) should be capable of removing sufficient heat from the spent fuel such that fuel is maintained in a safe and stable condition. Vital auxiliaries, such as ventilation systems, electrical power supplies, service water systems, component cooling water systems, and instrument air, should be capable of supporting the spent fuel pool cooling system functions required for decay heat removal