05000455/FIN-2008003-07
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Finding | |
|---|---|
| Title | Design Bases RE-ANALYSIS of the Ultimate Heat Sink |
| Description | As documented in Inspection Report 05000454/2008008; 05000455/2008008, the inspectors identified the licensee did not consider spurious failure/opening of the 4160 volt or 480 Volts AC as a valid single failure in Amendment No. 95. The inspectors further noted that the NRC did not evaluate the potential for a passive failure of the electrical breakers even though passive failures were required to be evaluated under 10 CFR Part 50, Appendix A. After further review, the inspectors determined that the provisions of 10 CFR 50.109(a)(4), were applicable and that a modification is necessary to bring a facility into compliance with the rules or orders of the NRC. The licensee was requested to respond with a description of the intended actions to address the noncompliance including a proposed schedule to complete those actions. In a letter dated June 4, 2008, from D. Hoots (ADAMS Accession No. ML081560649), the licensee stated that a design basis re-analysis of the ultimate heat sink would be completed by December 5, 2008. This issue is considered open pending completion of the licensees re-analysis. (OTHR 05000454/2008003-07; 05000455/2008003-07 |
| Site: | Byron  |
|---|---|
| Report | IR 05000455/2008003 Section 4OA5 |
| Date counted | Jun 30, 2008 (2008Q2) |
| Type: | Other: |
| cornerstone | No Cornerstone |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | B Bartlett C Acosta C Thompson C Zoia D Jones J Cassidy J Jacobson N Feliz Adorno R Jickling R Ng R Russell R Skokowski T Bilik V Meghani |
| INPO aspect | |
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Finding - Byron - IR 05000455/2008003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Byron) @ 2008Q2
Self-Identified List (Byron)
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