Document: NRC Regulatory Guide
Document ID: 96ecfd93-e64a-4f35-93fe-d3b95daac61d
Document Type: regulatory_guide
Title: Monitoring the Effectiveness of Maintenance at Nuclear Power Plants + HISTORY –HISTORY 06/2018 – DG-1336 , Proposed Revision 4 09/2011 – DG-1278 , Proposed Revision 3 08/1996 – DG-1051 , Proposed Revision 2 06/1994 – DG-1031, Proposed Revision 1 11/1992 – DG-1020, Proposed Revision 0 (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1812/ML18129A080.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.160
CFR Part: 
CFR Title: 

Content:
ustry representatives on August 23, 2016, as documented in “Meeting with Industry Stakeholders on Changes to NUMARC 93-01, Revision 4D, Industry Guideline for Monitoring Effectiveness of Maintenance at Nuclear Power Plants” (Ref. 13), and again on January 18, 2017 and on January 9, 2018, as documented in “Public Meeting Between U.S. Nuclear Regulatory Commission Staff and Industry Stakeholders to Discuss Changes to NUMARC 93-01, Industry Guideline for Monitoring Effectiveness of Maintenance at Nuclear Power Plants” (Ref. 14). The purpose of these meetings was to address the impacts on the scoping requirements in the Maintenance Rule from the integration of FLEX Support Guidelines with plant EOPs. Plant, System, Train, and Component Monitoring Levels The extent of monitoring may vary from system to system depending on the system’s importance to safety. Some monitoring at the component level may be necessary; however, the staff envisions that most of the monitoring can be done at the plant, system, or train level. SSCs with high safety significance and standby SSCs with low safety significance should be monitored at the system or train level. Except as noted in Section C of this guide, normally operating SSCs with low safety significance may be monitored through plant-level performance criteria, including unplanned scrams, safety system actuations, or unplanned capability loss factors. For SSCs monitored in accordance with 10 CFR 50.65(a)(1), additional parameter trending may be necessary to ensure that the problem that caused the SSC to be placed in the 10 CFR 50.65(a)(1) category is being corrected. Use of Existing Licensee Programs The NRC staff encourages licensees to use, to the maximum extent practicable, activities currently being conducted, such as technical specification surveillance testing, to satisfy monitoring requirements. Such activities could be integrated with, and provide the basis for, the requisite level of monitoring. Consistent with the