Document: NUREG-0800
Document ID: 7bd74f6c-471d-40b1-9659-6a5e00c5f169
Document Type: srp
Title: MAINTENANCE RULE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1409/ML14099A044.pdf
Revision Date: 2023-06
Chapter: 17
Section ID: 17.6
CFR Part: 
CFR Title: 

Content:
the scope of the MR program will be tracked to demonstrate effective control of their performance or condition in accordance with 10 CFR 50.65(a)(2). The 10 CFR 50.65(a)(2) process should address the following: i. The process for developing performance criteria or condition monitoring criteria used to demonstrate effective control of performance or condition for SSCs in 10 CFR 50.65(a)(2) status. The applicant’s submittal should explain how the program ensures that performance criteria are commensurate with safety (including Probabilistic Risk Assessment (PRA) insights). It should also take good engineering practices and IOE into account. The performance criteria should be achievable and sufficiently sensitive to degraded performance or condition that meeting these criteria would demonstrate effective control of the performance or condition of that the SSC through appropriate preventive maintenance and the SSC would remain capable of performing its function(s) and not fail in a manner adverse to safety. 17.6-9 Revision 2 – July 2014 The program description should address how effective control of performance or condition of SSCs in 10 CFR 50.65(a)(2) status will be demonstrated including condition monitoring of passive SSCs (e.g., structures) and SSCs for which the reliability performance criterion has been set to zero failures allowed. For each SSC to be in 10 CFR 50.65(a)(2) status, performance (availability and/or reliability) criteria or condition monitoring criteria will be reviewed during NRC inspection. ii. For reliability performance criteria, the process for defining, determining and treating functional failures, MR functional failures, maintenance- preventable functional failures (MPFFs), and repetitive MPFFs. iii. For availability performance criteria, the process for defining and tracking availability or unavailability (planned and unplanned), including exceptions and credits and the basis thereof. iv. For condition monitoring criteria, the process