Document: NRC Regulatory Guide
Document ID: 666e1303-0170-4974-a7d6-af27eb586524
Document Type: regulatory_guide
Title: Risk-Informed, Performance-Based Fire Protection for Existing Light-Water Nuclear Power Plants (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2104/ML21048A448.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.205
CFR Part: 
CFR Title: 

Content:
ssuance of a license amendment approving the methods. A licensee may apply these approved methods within the limits specifically described in its licensing basis to implement plant changes that affect the FPP. Licensee self-approval of FPP changes using approved alternative risk-informed or performance- based methods may be granted in the fire protection license condition, when appropriate. Subsequent changes to the approved alternative risk-informed or performance-based method must be submitted for NRC review and approval (through a license amendment request) before being applied to the licensee’s FPP. Licensee self-approval of fundamental FPP changes in NFPA 805 Chapter 3 may be granted in the fire protection license condition if the alternative is functionally equivalent or adequate for the hazard as appropriate. This license condition does not apply to changes made under NFPA 805, Section 1.7, “Equivalency” because NFPA 805, Section 1.7 requires that those changes be submitted to and approved by the NRC. 2.2.4 Risk Evaluations In accordance with 10 CFR 50.48(c), licensees may evaluate fire areas using performance-based approaches. The performance-based approaches may be fire modeling or other engineering analyses (i.e., NFPA 805, Section 4.2.4.1), a fire risk evaluation (i.e., NFPA 805, Section 4.2.4.2), or a risk-informed or performance-based alternative to compliance with NFPA 805 (i.e., 10 CFR 50.48(c)(4)). These methods are applied to aspects of a fire area that are used as an alternative to the NFPA 805 RG 1.205, Revision 2, Page 10 deterministic criteria,3 whether these alternatives involve hardware (equipment and systems) functions or human actions. (Note that EEEEs, as set forth in NFPA 805, Section 2.2.7, can be used to demonstrate compliance with the deterministic criteria; refer to Regulatory Position 2.3.2.) A license amendment request should clearly demonstrate that the requirements of 10 CFR 50.48(c) and NFPA 805 will be met, including any