Status of the ANS Low Power and Shutdown PRA Standard

The Low Power & Shutdown (LPSD) PRA Standard (ANS-58.22) is currently being drafted by a Writing Group under the auspices of the Risk Informed Standards Committee of the American Nuclear Society. The Writing Group includes representatives from nuclear utilities, US Nuclear Regulatory Commission, national laboratory, university, and consultants with substantial experience producing LPSD PRAs. This draft standard is scheduled to be released for public comment in the second quarter of 2004, with publication by the end of 2004. This paper presents the current status of this standard in preparation for its public release.