Document: NRC Regulatory Guide
Document ID: 40fb588c-37f6-474f-b12a-d7be81beefe5
Document Type: regulatory_guide
Title: Guidelines for Evaluating Fatigue Analyses Incorporating the Life Reduction of Metal Components Due to the Effects of the Light-Water Reactor Environment for New Reactors (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1417/ML14171A584.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.207
CFR Part: 
CFR Title: 

Content:
designed, fabricated, erected, and tested to the highest practical quality standards. DG-1309, Page 2 • Section 55a, “Codes and Standards,” of 10 CFR Part 50 endorses the ASME Code for design of safety-related systems and components. Section 50.55a(c), “Reactor Coolant Pressure Boundary,” requires, in part, that components of the reactor-coolant pressure boundary meet the requirements for Class 1 components in Section III of the ASME Code, except as provided in that section. Specifically, the ASME Class 1 requirements contain provisions, including fatigue design curves, for determining a component’s suitability for cyclic service. These provisions are used for those components that are exposed to reactor coolant and are required by regulation to have a fatigue CUF calculation or have an existing current licensing basis (CLB) fatigue CUF calculation. Related Guidance • U.S. Nuclear Regulatory Commission (NRC), “Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants,” NUREG-1800 (Ref. 5). • U.S. NRC, “Generic Aging Lessons Learned (GALL) Report,” NUREG-1801 (Ref. 6). Purpose of Regulatory Guides The NRC issues regulatory guides to describe to the public methods that the NRC staff considers acceptable for use in implementing specific parts of the agency’s regulations, to explain techniques that the NRC staff uses in evaluating specific problems or postulated accidents, and to provide guidance to applicants. Regulatory guides are not substitutes for regulations and compliance with them is not required. Methods and solutions that differ from those set forth in regulatory guides will be deemed acceptable if such alternatives provide a basis for the findings required for the issuance or continuance of a permit or license by the Commission. Paperwork Reduction Act This regulatory guide contains information collections that are covered by the requirements of 10 CFR Parts 50, 52, and 54, which the Office of