05000305/FIN-2012002-07
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Finding | |
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Title | Licensee-Identified Violation |
Description | Title 10 CFR 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, states, in part, that activities affecting quality shall be prescribed by documented procedures of a type appropriate to the circumstances. Contrary to this, on November 28, 2011 and December 5, 2011, procedure ER-KW-STP-DGM-002A and -002B, Post-Tie-in Testing for DC KW-10-01101, Train A and Post-Tie-in Testing for DC KW-10-01101, Train B which were one time use special test procedures, were not appropriate to the circumstances. Specifically, the procedures determined the leak rate for the SR backup air supply for the EDG ventilation dampers and because of a calculation error, the procedure only required a test duration of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> instead of a test duration of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The licensee corrected the operations version of the procedure and, during the quarterly test of train A on February 19, 2012, found the leakage to be greater than expected, and determined the installed bottles would not have enough air to support operation of the dampers for 7 days without manual operator action. The licensee repaired the leaking components and entered this into the CAP as CRs 460168 and 463265. The air bottles contained enough air to operate the dampers for approximately 3.5 days, which exceeded the 24-hour PRA mission time of the EDG, and therefore, the inspectors screened this finding as having very low safety significance. |
Site: | Kewaunee |
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Report | IR 05000305/2012002 Section 4OA7 |
Date counted | Mar 31, 2012 (2012Q1) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | Licensee-identified |
Inspection Procedure: | |
Inspectors (proximate) | D Mcneil K Riemer R Krsek K Barclay A Shaikh |
INPO aspect | |
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Finding - Kewaunee - IR 05000305/2012002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Kewaunee) @ 2012Q1
Self-Identified List (Kewaunee)
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