Finding | |
|---|---|
| Title | Human Performance Error Renders NSCW Pump #5 Inoperable |
| Description | A self-revealing non-cited violation (NCV) was identified for a human performance error associated with failure of an operator to verify that the discharge valve on the Nuclear Service Cooling Water (NSCW) pump #5 went closed after securing the pump as required by the operating procedure. As a result, NSCW pump #5 was rendered inoperable for several hours. Licensee immediately effected repairs to the discharge valve MOV and returned the NSCW pump #5 to operable status. This issue is more than minor because it is associated with a cornerstone attribute and adversely affected the objective of the Mitigating Systems cornerstone. Specifically, the performance deficiency is a human performance error which affected the availability, reliability, and capability of the A train emergency core cooling system to respond to a loss of coolant accident. The finding was determined to be of very low safety significance (Green) because the event did not represent an actual loss of safety function of a single train for greater than its TS allowed outage time. The inspectors determined that the cause of this finding was related to the Work Practices component of the Human Performance cross-cutting area due to less-than-adequate human error prevention techniques H.4(a). Specifically, self checking techniques were less than adequate |
| Site: | Vogtle  |
|---|---|
| Report | IR 05000424/2009004 Section 4OA5 |
| Date counted | Sep 30, 2009 (2009Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | |
| Inspectors (proximate) | A Nielsen G Kuzo G Laska M Cain T Chandler D Forbes L Mahlahla M Meeks S Shaeffer |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
| ' | |
Finding - Vogtle - IR 05000424/2009004 | ||||||||||||||||||||||||||||||
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Finding List (Vogtle) @ 2009Q3
Self-Identified List (Vogtle)
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