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
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ew and approval (e.g., changes to a facility design under 10 CFR 50.59, “Changes, Tests and Experiments”), or (3) to resolve regulatory or inspection issues (e.g., by committing to comply with the provisions in the regulatory guide). Current licensees may continue to use the guidance, such as a previous version of this regulatory guide that the staff found acceptable for complying with specific portions of the regulations as part of the license approval process. A licensee who believes that the NRC staff is inappropriately imposing this regulatory guide in response to a request for a license amendment or a change to a previously issued NRC regulatory approval may file a backfitting appeal with the NRC in accordance with applicable procedures. Use by NRC Staff The NRC staff does not intend or approve any imposition or backfitting of the guidance in this regulatory guide. It does not expect any existing licensee to use or commit to using the guidance in this regulatory guide in the absence of a licensee-initiated change to its licensing basis. The NRC staff does 3 In this section, “licensees” include applicants for standard design certifications under 10 CFR Part 52. DG-1253, Page 11 not plan to ask licensees to voluntarily adopt this regulatory guide to resolve a generic regulatory issue, nor does it expect to initiate, without further backfit consideration, regulatory action that would require the use of this regulatory guide (e.g., issuance of an order, generic communication, or rule requiring the use of the regulatory guide, or requests for information under 10 CFR 50.54(f) as to whether a licensee intends to commit to use of this regulatory guide). During inspections of specific facilities, the staff may suggest or recommend that licensees consider various actions 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