05000317/FIN-2009003-04
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | CCNPP TS LCO 3.4.10, Pressurizer Safety Valves, states, in part, that two pressurizer safety valves shall be operable. Contrary to this, from March 2006 to March 2008 one of the two pressurizer safety valves installed in Unit 1 was set above the TS limit and, therefore, was inoperable. Constellation identified the deficiency following the refueling outage while testing the valve as part of the relief valve-testing program. Constellation entered this issue in their CAP under IRE-033-089. This violation was of very low safety significance because the valve would have opened for the events credited to mitigate incidents in the Phase 2 notebooks such that it satisfied the bounding maximum vessel pressure calculations |
| Site: | Calvert Cliffs  |
|---|---|
| Report | IR 05000317/2009003 Section 4OA7 |
| Date counted | Jun 30, 2009 (2009Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | G Dentel S Kennedy R Rolph K Mangan M Davis |
| INPO aspect | |
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Finding - Calvert Cliffs - IR 05000317/2009003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Calvert Cliffs) @ 2009Q2
Self-Identified List (Calvert Cliffs)
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