05000237/FIN-2008004-03
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Finding | |
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Title | Licensee-Identified Violation |
Description | Technical Specification 3.1.6.B required that if nine or more operable control rods were not in compliance with the analyzed rod pattern sequence then rod withdrawal was to be suspended and the reactor mode switch was to be placed in shutdown. This requirement only applied to the Unit when it was less than 10 percent reactor power. On January 15, 2008, a Dresden Nuclear Power Station Qualified Nuclear Engineer identified that the control rod sequence used for the startup of Unit 2 following the refueling outage in November 2007 did not comply with the control rod drop accident analysis, and that the startup performed on November 19, 2007, did not comply with TS 3.1.6, Rod Pattern Control, for about five and one-half hours. Nine or more control rods were not in compliance with the analyzed rod pattern and reactor mode switch was not placed in shutdown. Non-compliance with a TS is a more than minor performance deficiency. Later review by Westinghouse identified that the rod sequence used by the licensee was acceptable for use in the rod drop analysis. Therefore this issue was of very low safety significance (Green). The licensee documented this issue in IR 722652. The inspectors reviewed corrective actions in IR 722652 and LER 237/2008-001 and no additional findings of significance were identified. |
Site: | Dresden |
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Report | IR 05000237/2008004 Section 4OA7 |
Date counted | Sep 30, 2008 (2008Q3) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | Licensee-identified |
Inspection Procedure: | |
Inspectors (proximate) | D Melendez-Colon W Slawinski C Phillips M Phalen D Lords E Coffman B Cushman J Draper |
INPO aspect | |
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Finding - Dresden - IR 05000237/2008004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Dresden) @ 2008Q3
Self-Identified List (Dresden)
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