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:
staff from monitoring an SSC under 10 CFR 50.65(a)(1) when a performance criterion has been exceeded or a repetitive MPFF has occurred. If there is some doubt about whether a particular SSC should be monitored under 10 CFR 50.65(a)(1) or (a)(2), the conservative approach would be to monitor the SSC under 10 CFR 50.65(a)(1). 1 Notably, in its Proposed Rule, Mitigation of Beyond-Design Basis Events, 80 Fed. Reg. 70,610 (Nov. 15, 2015)(proposing to make generically applicable requirements in Commission orders for mitigation of beyond-design- basis events and for reliable spent fuel pool instrumentation), the Commission expressed a similar philosophy concerning the Maintenance Rule and beyond design basis events, writing at 80 Fed. Reg. 70,627-27: Because the events for which the proposed mitigating strategies are to be used are outside the scope of the design basis events considered in establishing the basis for the design of the facility, equipment that is relied upon for those mitigating strategies may not fall within the scope of § 50.65, ‘‘Requirements for monitoring the effectiveness of maintenance at nuclear power plants.’’ Nevertheless, the NRC proposes that such equipment should receive adequate maintenance in order to assure that it is capable of fulfilling its intended function when called upon. Nonetheless, licensees subject to 50.65 are reminded that they are responsible for complying with the Commission’s regulations, and that final rulemaking that occurs after the publication of this RG that could make portions of this RG obsolete. DG-1336, Page 11 Harmonization with International Standards The International Atomic Energy Agency (IAEA) has established a series of safety guides and standards constituting a high level of safety for protecting people and the environment. IAEA safety guides present international good practices and increasingly reflects best practices to help users striving to achieve high levels of safety. Pertinent to this RG,