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:
requirements are voluntary (e.g., “should” used in place of “shall”). Since the 2001 Edition of NFPA 805 has been incorporated by reference into 10 CFR 50.48(c), licensees and applicants must comply with that standard as set forth in the regulation, unless the NRC grants an exemption from the requirements of 10 CFR 50.48(c) in accordance with 10 CFR 50.12, “Specific Exemptions.” If the licensee finds conflicts between NFPA 805 and NEI 04-02, licensees must follow the text of NFPA 805 because it is incorporated by reference in 10 CFR 50.48(c). d. NEI 04-02, Section 4.3.2, states, “[P]art of an existing fire protection program may be transitioned to a new NFPA 805 licensing basis by performing a transition review and by addressing NFPA 805 topics not typically addressed in a previously approved fire protection program…” While this statement may be true for some licensees, it should not be interpreted to mean that the existing FPP, a priori, complies with the requirements of 10 CFR 50.48(c). Licensees should verify that portions of the existing FPP that are to be so “transitioned” do, in fact, comply with the requirements of NFPA 805. e. NEI 04-02 states that, if operator manual actions that are not allowed under the current regulatory framework or do not have previous NRC approval become recovery actions, they should be evaluated using the change process. However, NFPA 805 states that the additional risk of recovery actions that are relied on to demonstrate the availability of a success path, as set forth in NFPA 805, Section 4.2.3.1, must be addressed using performance-based methods, as required by NFPA 805, Section 4.2.4 (see Regulatory Position 2.4). f. NEI 04-02, Section 4.3.1, states that existing engineering equivalency evaluations (EEEEs) are an acceptable alternative to the deterministic requirements in NFPA 805, Section 4.2.3. The NRC endorses this guidance only if the conditions identified in Regulatory Position 2.3.2 are met. g. NEI