Document: NUREG-0800
Document ID: 757f66f9-1dd5-4125-9970-089087134ad9
Document Type: srp
Title: FIRE PROTECTION PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0905/ML090510170.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.1.1
CFR Part: 
CFR Title: 

Content:
he basis for the review of the proposed methodologies. Refer to SRP Chapter 19, AProbabilistic Risk Assessment,@ for additional guidance on the review of nuclear power plant PRAs. A fire PRA should be subjected to a peer review to the extent that adequate industry guidance is available. The industry guidance will be reviewed and, if appropriate, accepted by the NRC prior to its application to specific fire PRAs. The results of the plant-specific peer reviews should also be reviewed by the NRC. A peer review should be conducted for all types and levels of fire PRAs. In the event that adequate industry guidance is not available for conducting a fire PRA peer review, the NRC should review the fire PRA for acceptability. Licensees may use PRA and/or risk insights gained from other methods in support of proposed changes to the plant licensing basis, such as license amendment requests pursuant to 10 CFR 50.90 and 50.92. RG 1.174, AAn Approach for Using Probabilistic Risk Assessment In Risk- Informed Decisions on Plant-Specific Changes to the Licensing Basis,@ provides guidelines for the use of PRA in support of plant changes that require NRC approval. Plant changes that are not subject to NRC approval are not within the scope of RG 1.174. Where PRA is used by licensees in support of submittals to change the plant licensing basis, the guidelines of SRP Chapter 19 should be followed. Licensees may apply fire modeling methodologies to a performance-based evaluation of the FPP and to changes to the program. Fire modeling results can provide input to a change evaluation, but the change should also be evaluated for the impact on plant risk, DID, and safety margin. Licensees should document that the fire models and methods used meet NRC requirements. The licensee should also document that the models and methods used in performance-based analyses are used within their limitations and with the rigor required by the nature and scope of the analyses. These analyses may use simple