Document: NRC Regulatory Guide
Document ID: c256f223-ee35-43e0-82e7-aa7b14469259
Document Type: regulatory_guide
Title: Preoperational Testing of Emergency Core Cooling Systems for Pressurized Water Reactors + HISTORY - HISTORY DG-1253 , Proposed Revision 2 (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1101/ML110110480.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.79
CFR Part: 
CFR Title: 

Content:
tions consistent with staff positions in this regulatory guide. Such suggestions and recommendations would not ordinarily be considered backfitting, even if prior versions of this regulatory guide are part of the licensing basis of the facility with respect to the subject matter of the inspection. However, the staff may not represent to the licensee that (1) the licensee’s failure to comply with the positions in this regulatory guide constitutes a violation, (2) the licensee may avoid the violation by agreeing to comply with this regulatory guide, or (3) the only acceptable way for the licensee to address the NRC-identified noncompliance or violation is to commit to this regulatory guide (i.e., including it in the facility’s licensing basis). If an existing licensee seeks a license amendment or change to an existing regulatory approval, and the staff’s consideration of the request involves a regulatory issue that is directly relevant to this regulatory guide, and if the specific subject matter of the new or revised guidance is an essential consideration in the NRC staff’s determination of the acceptability of the licensee’s request, the licensee may use this regulatory guide as a prerequisite for NRC approval. This is not considered backfitting as defined in 10 CFR 50.109(a)(1) or a violation of any of the issue finality provisions in 10 CFR Part 52. Conclusion While current licensees may voluntarily use this regulatory guide, the NRC is not imposing it. In addition, its publication is in conformance with all applicable internal NRC policies and procedures governing backfitting. Accordingly, the issuance of this regulatory guide is not considered backfitting, as defined in 10 CFR 50.109(a)(1), nor is it deemed to be in conflict with any of the issue finality provisions in 10 CFR Part 52. DG-1253, Page 12 GLOSSARY OF ACRONYMS ADAMS - Agency Document Access and Management System ADS – Automatic Depressurization System AP1000 – Advanced Passive 1000 ASME