05000528/FIN-2008002-09
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Finding | |
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| Title | Licensee-Identified Violation |
| Description | Technical Specification Surveillance Requirement 3.3.11.2 requires that each remote shutdown system disconnect switch and control circuit is verified capable of performing the intended function. Contrary to the above, between January 20, 2008 and March 15, 2008, Procedure 40ST-9ZZ20, \\\"Remote Shutdown Disconnect Switch and Control Circuit Operability,\\\" Revision 10, did not verify all circuit paths associated with each disconnect switch were adequately tested. This issue affected all the disconnect switches to the remote shutdown panel. The licensee entered into TS Surveillance Requirement 3.0.3 for a missed surveillance, performed a risk evaluation, and tested the most risk-significant disconnect switches to verify that these disconnect switches could perform their intended function. Of the risk-significant disconnect switches tested, the licensee identified that one disconnect switch associated with Unit 1 AFW pump to SG 1 block Valve AFB-UV-34 would not have been capable of performing it\\\'s intended function due to an electrical jumper installed in the closing circuit. This valve is in the flow path from the motor driven AFW pump to SG 1. However, the potential failure of this valve would not have affected the ability to maintain a shutdown condition, because the flowpath to the SG 2 was not affected. The finding was entered into the CAP as PVARs 3129077, 3135575, 3136664, 3138937 and 3144595. Using Manual Chapter 0609, \\\"Significance Determination Process,\\\" Appendix F, \\\"Fire Protection Significance Determination Process,\\\" the finding is determined to have very low safety significance because at Step 1.3, Qualitative Screening Approach, the finding only affected the ability to reach and maintain a cold shutdown condition. |
| Site: | Palo Verde  |
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| Report | IR 05000528/2008002 Section 4OA7 |
| Date counted | Mar 31, 2008 (2008Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | R Treadway P Elkmann G Werner L Carson J Melfi G Warnick M Hay J Bashore M Catts |
| INPO aspect | |
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Finding - Palo Verde - IR 05000528/2008002 | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palo Verde) @ 2008Q1
Self-Identified List (Palo Verde)
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