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:
he details of sensitivity studies. If the combination of PFM software and analysis belongs to category SS-1 in Table C-10, the staff does not recommend performing sensitivity studies. If the submittal presents several PFM analyses, the applicant should determine the sensitivity studies category for each PFM analysis and document sensitivity studies for each PFM analysis according to the guidelines in Table C-10. RG 1.245 Revision 0, Page 25 Table C-10: Submittal Guidelines for Sensitivity Studies Category Description Sensitivity Study Needed? Submittal Guidelines SS-1 Category QV-1A code with same QoI characteristic a No • Summarize sensitivity studies conducted in prior approval. SS-2 Category QV-1A code with different QoI characteristic Limited, focused on inputs related to QoI • Summarize past sensitivity studies conducted in prior approval and current sensitivity studies. SS-3 Category QV-1B or QV-1C code with limited independent variables (e.g., <5, determined on a case-by-case basis) Limited, focused on impact of modification • Summarize past and current sensitivity studies. SS-4 Category QV-1B or QV-1C code with many independent variables (e.g., >5, determined on a case-by-case basis) Yes, focused on inputs related to QoI • Summarize past and current sensitivity studies. • List the uncertain assumptions that are considered for sensitivity studies. • State the impact and conclusion of each sensitivity study. • Give the rationale for why certain assumptions were or were not considered for sensitivity studies. • Provide the specific question(s) each sensitivity study is attempting to answer. • Describe a reference realization. • Describe how each sensitivity study is translated into model realizations and compare the study and the reference realization. • List changes to the code and the QA procedure used. SS-5 Category QV-2 or QV-3 code with limited independent variables (e.g., <5, determined on a case-by-case basis) Yes • See the