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:
e most recent revision of RG 1.189. NEI 04-02, Section B.3.2, states that licensees should summarize EEEEs that demonstrate that a fire protection system or feature is “adequate for the hazard” in documentation for their license amendment request. If a licensee is not requesting specific approval for an “adequate for the hazard” EEEE, then the license amendment request should state that the licensee has used an EEEE to demonstrate compliance and should briefly describe the evaluated condition. Licensees requesting specific NRC approval for “adequate for the hazard” EEEEs, as discussed in Regulatory Position 2.2.1, should state that they have used the EEEE to demonstrate compliance and submit a detailed summary, including sufficient detail to allow the NRC staff to evaluate the EEEE. The level of detail should include (1) a summary of each condition, (2) a summary of the evaluation of each condition, and (3) a summary of the resolution of each condition. In all cases, licensees that rely on EEEEs to demonstrate compliance with NFPA 805 requirements should document this usage in their license amendment request. 2.4 Recovery Actions Use of recovery actions, as defined in NFPA 805, Section 1.6.52, to demonstrate the availability of a success path for the nuclear safety performance criteria does not meet the deterministic requirements in Section 4.2.3 of NFPA 805. Consequently, the licensee must address recovery actions, whether or not previously approved by the NRC, using the performance-based methods in Section 4.2.4, as required by NFPA 805, Section 4.2.3.1, and must evaluate the additional risk of their use according to NFPA 805, Section 4.2.4. Regulatory Position 2.2.4 provides guidance on calculating this additional risk of recovery actions. Appendix B.2.3 to NEI 04-02 provides detailed guidance on one acceptable approach for addressing recovery actions. When using the performance-based methods in NFPA 805, Section 4.2.4, the licensee must demonstrate