Regulations and Guidance

Maintenance effectiveness is the subject addressed by the Maintenance Rule, 10 CFR 50.65,"Monitoring the Effectiveness of Maintenance at Nuclear Power Plants." Guidance documents provide licensees with assistance regarding implementation of the regulation. Working toward public understanding of the regulation, the industry provides its guidance to NRC licensees, and then the NRC provides regulatory guides that may endorse the industry guidance, but additionally may take exceptions. For implementation of the maintenance rule, listed below are the two industry guidance documents that are endorsed by two NRC regulatory guides, with exceptions.

The requirements for the maintenance rule are provided in 10 CFR 50.65.

The staff has added the Maintenance Rule Flow Chart to the Web site.

Guidance Documents

Regulatory guides for the maintenance rule are --

Regulatory Guide 1.160, Revision 4 , "Monitoring the Effectiveness of Maintenance at Nuclear Power Plants," is the current revision of the regulatory guide that provides one acceptable method for implementing the maintenance rule. The regulatory guide endorses NUMARC 93-01, Revision 4A.

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Industry Guidance

Industry guidance for implementation of the maintenance rule are --

NUMARC 93-01, Revision 4F ,"Industry Guideline for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants," is the currently endorsed version of the industry guidance document developed by the Nuclear Utilities Management and Resource Council, now the Nuclear Energy Institute (NEI).

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Page Last Reviewed/Updated Tuesday, May 23, 2023