Document: NUREG-0800
Document ID: 081a217e-3707-4233-964d-398c43368dd2
Document Type: srp
Title: MAINTENANCE RULE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0708/ML070810004.pdf
Revision Date: 2023-06
Chapter: 17
Section ID: 17.6
CFR Part: 
CFR Title: 

Content:
he scope of the MR program as prescribed by program procedures, including risk metrics/importance measures and values, operating experience, vendor information, D-RAP scope (or modified O-RAP scope as required), and any other factors considered by the 17.6-6 March 2007 expert panel. The MR procedure description should address the criteria for risk ranking of passive components in the new plant designs, especially if it involves a deviation from NUMARC 93-01 and RG 1.160. D. If the applicant proposes to credit its MR program (along its with QA, testing, surveillance and underlying maintenance programs) in implementing the RAP in the operations phase, the applicant should include a description of how the D-RAP SSCs (as identified in Section 17.4.1) will be included in the MR program scope and also included in the high-safety-significant (HSS) category. In addition, the process and procedures controlling how the D-RAP SSC list may be modified by site-specific requirements and information (e.g., SSCs included in the EOPs) should be described. Because not all modifications, if any, to the D-RAP list are expected to be available at the time of the COLA (e.g, the EOPs are not expected to be fully developed at this time), then it is important that information provided in the FSAR clearly identifies the scope, purpose and essential elements of the program, such that there is assurance that the design reliability established by the D-RAP will be maintained. If a licensee’s expert panel determines that it is appropriate to modify the MR program scope (i.e., to exclude one or more SSCs) or to change the safety significance classification of one or more SSCs from high to low within the MR program scope, and such modification involves D-RAP SSCs, then the criteria or justification used must be consistent, to the extent appropriate to the new plant design and new plant design and operational PRAs, with the criteria for inclusion of SSCs in the D-RAP list as well as consistent