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:
eeting minutes, and letters from licensees without a corresponding written NRC approval are examples of documents that do not represent NRC approval for this purpose. Existing exemptions or deviations from these attributes of NFPA 805, Chapter 3, are previously approved alternatives to the fundamental FPP attributes and, therefore, take precedence over the requirements in NFPA 805, Chapter 3, provided the NRC staff determines that the licensee has acceptably addressed the continued validity of any exemption or deviation in effect at the time of application. The term “valid,” used in this context, means that the technical basis for approval of the original exemption or deviation still applies (e.g., plant modifications or other changes have not invalidated the assumptions or analysis that formed the basis for the exemption or deviation; new information has not surfaced that would invalidate the original finding). RG 1.205, Revision 2, Page 14 In the case of exemptions, the NRC will rescind, if appropriate, the original exemption in the NFPA 805 license amendment, since, in many cases, the NRC’s approval to use 10 CFR 50.48(c) and NFPA 805 will negate the licensee’s need for the exemption. 2.3.2 Previously NRC-Approved Alternatives to Deterministic Requirements in NFPA 805, Section 4.2.3 NFPA 805, Section 2.2.7, defines EEEEs and states that, when applying a deterministic approach, licensees may use EEEEs to demonstrate compliance with the specific deterministic fire protection design requirements in NFPA 805, Chapter 4, for existing plant configurations. These EEEEs must clearly demonstrate an equivalent level of fire protection compared to the deterministic requirements. In the past, licensees have requested and received exemptions or deviations from the specific requirements in pretransition fire protection regulations (i.e., 10 CFR Part 50, Appendix R). Licensees may use existing exemptions or deviations to demonstrate compliance with the specific