Document: NUREG-0800
Document ID: 611894d3-7df3-4689-9993-3ec62c194495
Document Type: srp
Title: MAINTENANCE RULE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1301/ML13015A125.pdf
Revision Date: 2023-06
Chapter: 17
Section ID: 17.6
CFR Part: 
CFR Title: 

Content:
der 10 CFR 50.65(b)(2). The applicant should also describe its process for treatment under 10 CFR 50.69 of those RISC-3 and RISC-4 SSCs that would otherwise be treated in accordance with 10 CFR 50.65. Deviations in this process from SSC risk classification and treatment in accordance with NUMARC 93-01, as endorsed by RG 1.160, where an SSC would be classified as RISC-3 or RISC-4, but would otherwise be classified as high-safety-significant (HSS) under NUMARC 93-01, as endorsed by RG 1.160, should be identified and explained. C. Specific information on the actual SSCs within the scope of the MR program will be reviewed as part of the operational program implementation inspection by the NRC, including the following for each SSC in scope: i. Specific MR requirement(s) in 10 CFR 50.65(b) that require the SSC to be in scope. ii. For each SSC, for each 10 CFR 50.65(b) scoping criterion, the function(s) that require the SSC to be in scope. iii. For each SSC, for each 10 CFR 50.65(b) scoping criterion, as applicable, the failure modes and effects that require the SSC to be in scope. iv. For each SSC scoping function or vulnerability, the functional performance requirements/success criteria and/or functional failure definitions and implications. D. The applicant’s submittal should describe the process for determining the safety/risk significance classification of SSCs within the scope of the MR 17-6-7 Draft Revision 2 – July 2013 program, including risk metrics/importance measures and values, operating experience, vendor information, RAP scope (modified for the operations phase as necessary), and any other factors considered by the expert panel. The MR program 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. E. If the applicant proposes to credit its MR program (along with its quality assurance, testing, surveillance, and underlying maintenance