Nuclear Regulatory Commission March 22, 2010 – Federal Register Recent Federal Regulation Documents

The NRC is issuing its Final Interim Staff Guidance (ISG) DC/ COL-ISG-020 titled ``Implementation of a Seismic Margin Analysis for New Reactors Based on Probabilistic Risk Assessment,'' (Agencywide Documents Access and Management System (ADAMS) Accession No. ML100491233). This ISG supplements the guidance provided to the staff in Section 19.0 of NUREG-0800, ``Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants,'' issued March 2007 and DC/COL-ISG-03, ``Probabilistic Risk Assessment Information to Support Design Certification and Combined License Applications,'' dated June 11, 2008 (ADAMS Accession No. ML081430087) concerning the review of probabilistic risk assessment (PRA) information and severe accident assessments submitted to support design certification (DC) and combined license (COL) applications. The NRC staff intends to incorporate DC/ COL-ISG-020 into the next revision of SRP Section 19.0 and Regulatory Guide 1.206, ``Combined License Applications for Nuclear Power Plants (LWR Edition),'' June 2007.