05000416/FIN-2012002-06
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Technical Specifications section 3.6.1.3 requires that main steam isolation valves have a closure time of less than or equal to 5 seconds. Contrary to this, on February 20, 2012, during refueling outage 18, the licensee performed Surveillance Procedure 06-OP-1B21-V-0001, Revision 114, MSIV Operability Test , on main steam isolation valve 1B21F028A, and the valve closure time was 6.7 seconds. The licensee entered this issue into their corrective action program in condition report CR-GGN-2012-01848 and initiated work order 306292 to repair the valve prior to the end of the refueling outage. The finding was determined to be of very low safety significance (Green) because it did not represent a degradation of the radiological barrier function provided for the control room, or auxiliary building, or spent fuel pool, or standby gas treatment system, a degradation of the barrier function of the control room against smoke or a toxic atmosphere, an actual open pathway in the physical integrity of reactor containment, and the finding did not involve an actual reduction in function of hydrogen igniters in the reactor containment. |
| Site: | Grand Gulf  |
|---|---|
| Report | IR 05000416/2012002 Section 4OA7 |
| Date counted | Mar 31, 2012 (2012Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | L Ricketson R Smith V Gaddy B Rice D Reinert J Braisted N Greene |
| INPO aspect | |
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Finding - Grand Gulf - IR 05000416/2012002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Grand Gulf) @ 2012Q1
Self-Identified List (Grand Gulf)
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