05000454/FIN-2012002-04
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Finding | |
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| Title | |
| Description | The inspectors identified a finding of very low safety significance and an associated NCV of 10 CFR 50.55a(g)4 when licensee personnel failed to perform system leakage testing in a timely manner as required by Section XI of the American Society of Mechanical Engineers (ASME) Code following modification activities that added piping and associated welds between the Unit 1 and Unit 2 Component Cooling Water (CC) and Essential Service Water (SX) systems. The licensee entered this issue into their CAP as IR 1348236 and performed the required system leakage tests, which were all found to be acceptable. The finding was determined to be more than minor in accordance with IMC 0612, Appendix B, Issue Screening, because it was associated with the Mitigating Systems Cornerstone attribute of Procedure Quality and adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The inspectors determined that the finding could be evaluated using the SDP in accordance with IMC 0609, Significance Determination Process, Attachment 0609.04, Phase 1 - Initial Screening and Characterization of Findings, Table 4a for the Mitigating Systems Cornerstone. Specifically, the inspectors answered Yes to Question 1 Is the finding a design or qualification deficiency confirmed not to result in a loss of operability or functionality? Based upon this Phase 1 screening, the inspectors concluded that the finding was of very low safety significance (Green). This finding had a cross-cutting aspect in the Resources component of the Human Performance cross-cutting area because the licensee failed to include the necessary ASME testing requirements in the modification package and the work performance package to ensure adequate performance of an activity which affected testing of a safety-related modification to risk-significant systems, and thereby ensure nuclear safety |
| Site: | Byron  |
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| Report | IR 05000454/2012002 Section 1R18 |
| Date counted | Mar 31, 2012 (2012Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.18 |
| Inspectors (proximate) | A Garmoe B Bartlett B Jose C Thompson E Duncan E Sanchez Santiago J Cassidy J Dalzell J Robbins R Ng |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Byron - IR 05000454/2012002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Byron) @ 2012Q1
Self-Identified List (Byron)
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