Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
This NUREG-0471[1]task will make a determination as to whether plants should be designed to accommodate a total loss of all AC power for a limited period of time.
This issue is covered in USI A-44, "Station Blackout."
[1] NUREG-0471, "Generic Task Problem Descriptions (Categories B, C, and D)," U.S. Nuclear Regulatory Commission, June 1978.
Page Last Reviewed/Updated Tuesday, March 24, 2026
Disclaimer: Some of the formatting in NUREG-0933 may not be correct. We are currently working on fixing the formatting.
Page Last Reviewed/Updated Tuesday, March 24, 2026
