Document: NRC Regulatory Guide
Document ID: 8e45dce1-e1e7-4415-b1dd-7e2a610e545b
Document Type: regulatory_guide
Title: Fire Protection for Nuclear Power Plants (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2023/ML20231A835.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.189
CFR Part: 
CFR Title: 

Content:
by relating item (a) above specifically to: changes to the FPP under the standard license condition; changes that maintain compliance with the applicable NFPA codes and standards endorsed by the NRC; Appendix R to 10 CFR Part 50; this RG; DG-1359, Page 34 and the applicable BTPs, NUREG series reports, and other NRC-approved or NRC-issued documents. Licensees may perform code and standard equivalency evaluations without NRC review and approval, in accordance with the guidance in Regulatory Position 1.8.6. Other documents approved or issued by the NRC that provide a basis for compliance would include topical reports endorsed by the staff or other staff-documented generic positions or generic communications. If the licensee has an analysis in a retrievable format that demonstrates compliance with the applicable NRC-approved document(s), the change is acceptable, provided that the change meets current regulations (e.g., 10 CFR 50.48; Appendix R to 10 CFR Part 50, where applicable; and GDC 3), and is consistent with the defense-in-depth philosophy for fire protection (see Section II.A of Appendix R to 10 CFR Part 50). The NRC does not require an assessment of the risk impact of the change to demonstrate regulatory compliance. The NRC may find the substitution of repairs in lieu of installed fire protection systems and features for systems and components required to achieve and maintain cold shutdown acceptable, as long as the time to repair the cold shutdown capability did not exceed the limits prescribed in Appendix R to 10 CFR Part 50. An assessment of the risk impact may or may not be necessary to satisfy the provisions under item (b), above, depending on the nature of the change and the analysis used to justify it. Regulatory Position 5 of this guide provides additional guidance on acceptable operator manual actions. The licensee is responsible for demonstrating that the change has not resulted in an adverse effect on safe shutdown or noncompliance with the