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:
EEEE clearly demonstrates an equivalent level of fire protection compared to the deterministic requirements in NFPA 805, Chapter 4. b. The EEEE is not based on a risk calculation. c. The EEEE does not include any 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. One type of EEEE is commonly referred to as a “Generic Letter (GL) 86-10 evaluation.” These evaluations, which are conducted consistent with GL 86-10, “Implementation of Fire Protection Requirements,” dated April 24, 1986 (Ref. 19), permit licensees that have adopted the GL 86-10 standard fire protection license condition to make changes to their approved FPPs without prior NRC approval, if those changes would not adversely affect the ability to achieve and maintain safe shutdown in the event of a fire. The NRC may not have reviewed and approved these changes, and they may not necessarily demonstrate an equivalent level of fire protection compared to the deterministic requirements in RG 1.205, Revision 2, Page 15 Section 2.2.7 of NFPA 805. The licensee should verify that any EEEEs relied upon to meet the deterministic requirements of NFPA 805, Section 4.2.3, including GL 86-10 evaluations, meet the three conditions above. NEI 04-02, Section 4.1.1, notes that the licensee should review EEEEs during the NFPA 805 transition process to ensure that the quality level and basis for acceptability are still valid. Appendix B-3 to NEI 04-02 provides detailed guidance on the review of EEEEs. Except as noted above, satisfactory results from this review should provide an adequate basis to show that the EEEEs meet the deterministic requirements of Chapter 4 of NFPA 805. Guidance for acceptable EEEEs appears in the 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