Morgan, Lewis & Bockius LLP 1111 Pennsylvania Avenue, NW Washington, DC 20004 Tel. 202.739.3000 Fax: 202.739.3001 www.morganlewis.com Timothy P. Matthews Partner 202.739.5527
[email protected] May 17, 2012 William J. Froehlich, Chair Nicholas G. Trikouros Dr. William E. Kastenberg Atomic Safety and Licensing Board U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Docket: FirstEnergy Nuclear Operating Company, Davis-Besse Nuclear Power Station, Unit 1, Docket No. 50-346-LR Re: Notification of Filing Related to Proposed Shield Building Cracking Contention Dear Licensing Board Members: The purpose of this letter is to provide notification that FirstEnergy Nuclear Operating Company (FENOC), applicant in this proceeding, sent the enclosed letter to the Nuclear Regulatory Commission (NRC) on May 16, 2012, attached to which is FENOC’s Revision 1 of the Root Cause Analysis Report (Report) for the cracking first identified in the Davis-Besse Shield Building in October 2011. FENOC is notifying the Board of the enclosed letter because it is relevant to the proposed contention that was filed by Intervenors on January 10, 2012 in this proceeding. This document is a revision to the February 27, 2012 version of the Report, which FENOC provided to the Board in a February 29, 2012 notification. The revisions are identified and discussed in a Revision Summary on pages 5-7 of the Report and are identified by italics throughout the Report. The revisions include additional or clarifying information in response to observations made during a recent NRC inspection of the Report. The revisions do not invalidate the methodology, assessment and analysis, or conclusions of the Report.