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Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

Shutdown and Low-Power Operation at Commercial Nuclear Power Plants in the United States (NUREG-1449)

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Publication Information

Date Published: September 1993

Division of Systems Safety and Analysis
Office of Nuclear Reactor Regulation
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

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Abstract

The report contains the results of the NRC staff's evaluation of shutdown and low-power operations at commercial nuclear power plants in the United States. The report describes studies conducted by the staff in the following areas: operating experience related to shutdown and low-power operations, probabilistic risk assessment of shutdown and low-power conditions, and utility programs for planning and conducting activities during periods the plant is shut down. The report also documents the staff's evaluations of a number of technical issues regarding shutdown and low-power operations, including the principal findings and conclusions. Potential new regulatory requirements are discussed, as are potential changes in NRC programs. This is a final report. Comments on the draft version of the report are discussed in Appendix C of this report.

Page Last Reviewed/Updated Tuesday, March 09, 2021

Page Last Reviewed/Updated Tuesday, March 09, 2021