05000390/FIN-2013002-03
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Finding | |
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| Title | LICENSEE-IDENTIFIED Violation |
| Description | TS 3.4.12, Cold Overpressure Mitigation System (COMS), requires that COMS must be operable with a maximum of one CCP and no SI pumps capable of injecting into the RCS when in Modes 4, 5, and Mode 6 (when the reactor vessel head is on). On September 21, 2009, WBN entered Mode 4 at 0420 EDT as part of the Cycle 9 RFO. When Mode 4 was entered, two SI pumps and more than one CCP were capable of injecting into the RCS. As a result, LCO 3.4.12 was not met and the applicable required actions were not taken within their associated completion times. Therefore, WBN was in a condition prohibited by the TS. A review of previous operating data revealed this condition also existed on April 4, 2011, when WBN entered Mode 4 at 0454 EDT as a part of the Cycle 10 RFO. This low safety significant adverse condition was captured in the licensees corrective action program as PER 593388. |
| Site: | Watts Bar  |
|---|---|
| Report | IR 05000390/2013002 Section 4OA7 |
| Date counted | Mar 31, 2013 (2013Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | R Monk S Shaeffer K Miller |
| Violation of: | Technical Specification |
| INPO aspect | |
| ' | |
Finding - Watts Bar - IR 05000390/2013002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Watts Bar) @ 2013Q1
Self-Identified List (Watts Bar)
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