05000280/FIN-2009005-04
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Technical Specification 6.4 requires, in part, that detailed written procedures with appropriate check-off lists and instructions shall be provided and followed for the operation of components involving nuclear safety of the station. Licensee procedure GMP-012, Roving Flood Watch Responsibilities, requires that the water tight door to mechanical equipment room (MER) #3 be closed or monitored. Contrary to the above, on October 5, 2009, the watertight door to MER #3 was found open and unattended. This was identified in the licensees CAP as condition report 350894. A regional Senior Reactor Analyst performed a Phase 3 evaluation under the Significance Determination Process and concluded that the finding was of very low safety significance (Green). The dominant accident sequence involved an internal flood in the Mechanical Equipment Room #3 that was not isolated. Eventually, the flooding would have caused a sustained loss of all electrical power to the facility resulting in core damage. The exposure period used in the evaluation was less than two hours. |
| Site: | Surry  |
|---|---|
| Report | IR 05000280/2009005 Section 4OA7 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | C Fletcher R Williams R Hamilton W Loo J Nadel A Vargas-Mendez C Welch G Mccoy |
| INPO aspect | |
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Finding - Surry - IR 05000280/2009005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Surry) @ 2009Q4
Self-Identified List (Surry)
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