Document: NRC Regulatory Guide
Document ID: aa450282-f5b0-4dd2-b41a-917a7491deb2
Document Type: regulatory_guide
Title: Preparing Probabilistic Fracture Mechanics (Rev. 0)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2133/ML21334A158.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.245
CFR Part: 
CFR Title: 

Content:
anics in Regulatory Applications” (Ref. 6), which constitutes the detailed technical basis for this RG. The NRC has an approved methodology for risk-informed decision making for design-basis changes (Ref. 7), and PFM may be used as a tool within that framework. The purpose of PFM is to model the behavior and degradation of systems more accurately and consequentially draw more precise and accurate conclusions about situations relative to performance criteria or design assumptions. Consideration of International Standards The International Atomic Energy Agency (IAEA) works with member states and other partners to promote the safe, secure, and peaceful use of nuclear technologies. The IAEA develops safety requirements and safety guides for protecting people and the environment from harmful effects of ionizing radiation. These requirements and guides provide a system of safety standards categories that RG 1.245 Revision 0, Page 7 reflect an international perspective on what constitutes a high level of safety. In developing or updating RGs the NRC has considered IAEA safety requirements, safety guides and other relevant reports in order to benefit from the international perspectives, pursuant to the Commission’s International Policy Statement (Ref. 18) and NRC Management Directive and Handbook 6.6 (Ref. 19). The following IAEA safety requirements and guides were considered in the development/ update of the RG: • International Atomic Energy Agency, Development and Application of Level 1 Probabilistic Safety Assessment for Nuclear Power Plants, IAEA Safety Standards Series No. SSG-3, IAEA, Vienna (2010) (Ref. 20). RG 1.245 Revision 0, Page 8 C. STAFF REGULATORY GUIDANCE This section describes methods, approaches, and information that the NRC staff considers acceptable for performing PFM analyses and preparing the associated documentation in support of regulatory applications. To enhance the efficiency of the NRC’s review of PFM submittals, the staff recommends that