United States Nuclear Regulatory Commission - Protecting People and the Environment

Operating Reactor Maintenance Effectiveness

The regulatory objective of the Maintenance Rule, 10 CFR 50.65, is to require licensee monitoring of the overall continuing effectiveness of their maintenance programs to ensure the following:

  • Safety-related structures, systems, and components (SSCs) and certain SSCs that are not safety related are capable of performing their intended functions.
  • For equipment that is not safety related, failures will not occur that prevent the fulfillment of safety-related functions.
  • Failures resulting in scrams and unnecessary actuations of safety-related systems are minimized.

For more information on maintenance effectiveness, see the following:

See also:

  • Frequently Asked Questions PDF Icon on Maintenance Rule

  • Note: Frequently Asked Questions are provided for informational purposes only and are not to be considered official NRC positions.

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Page Last Reviewed/Updated Monday, April 29, 2013