Document: NRC Regulatory Guide
Document ID: e1a28538-35cc-4fc2-ab12-2e1d95830205
Document Type: regulatory_guide
Title: Acceptability of ASME Code, Section XI, Division 2, Requirements for RIM Programs for NPPs, for Non-LWRs
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2112/ML21120A185.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.246
CFR Part: 
CFR Title: 

Content:
gradation mechanism assessment. RIM-2.3 Screening criteria found in Mandatory Appendix VII are minimum requirements to be considered. RIM-2.4.2 The allocation of Reliability Targets shall consider the uncertainty inherent in the prediction of SSC reliability. RIM-2.7.4 The RIM program shall consider the design requirements of SSCs that are identified as part of the RIM strategies established in RIM-2.5. RIM-2.7.7 The examination volumes and methods that shall be considered by the monitoring and nondestructive examination (MANDE) expert panel (MANDEEP) in establishing MANDE criteria. RIM-2.10 Additional considerations for RIM program implementation. App V The referenced Division 1 figures in this appendix are solely used to denote typical geometries for various SSCs containing welds and related examination volumes that the MANDEEP should consider. DG-1383, Page 8 App VII Tables VII-1.2-1 and VII-3.2-1: Note (1) indicates restricted inspection access and spatial phenomena must be considered in the development or application of MANDE criteria developed by the MANDEEP. Basis for Regulatory Guidance Position 4 ASME Code, Section XI, Division 2, contains instructions to establish the scope of the RIM program along with determination of degradation mechanisms and reliability targets for SSCs that are within the scope of the RIM program. This is followed by the development of RIM strategies such as ISI examinations; testing; MANDE; and maintenance, repair, and replacement practices for the SSCs. The NRC staff will review the RIM program summary to verify that the provisions of ASME Code, Section XI, Division 2, for establishing reliability targets have been properly implemented and to ensure that reliability targets are established using appropriate PRA inputs and that the RIM strategies will ensure the reliability targets can be achieved. Paragraph RIM-2.7.1 of ASME Code, Section XI, Division 2, lists the information RIM program should contain. The NRC staff will review