05000244/FIN-2012005-01
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Finding | |
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| Title | Failure to Adequately Evaluate Changes to the Relay Room Halon Suppression System Inspection and Testing Frequency |
| Description | The inspectors identified a Green non-cited violation (NCV) of Ginna Operating License Condition 2.C.(3), Fire Protection, for failure to adequately evaluate changes to the approved fire protection program that could adversely affect the ability to achieve and maintain safe shutdown in the event of a fire. Specifically, Ginna changed the relay room halon suppression system (S08) inspection and testing frequency from semiannually to biennially and did not appropriately evaluate the change nor properly monitor conditions between testing. As a result, one of the relay room halon system storage cylinders was found below the minimum acceptable pressure. Immediate corrective actions included entering this issue into the CAP as CR-2012-7267, declaring the S08 system non-functional, and establishing a continuous fire watch within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. This finding is more than minor because if left uncorrected, the performance deficiency would have the potential to lead to a more significant safety concern. Specifically, the S08 system was last tested on October 13, 2011, and could have degraded to the point where it could not maintain minimum required halon concentration before it would have been retested and thoroughly inspected in October 2013. Using IMC 0609 Appendix F, a low degradation rating was assigned to this finding because the S08 system was determined to be functional and was expected to display nearly the same level of effectiveness and reliability as it would have had the degradation not been present. Therefore, the inspectors determined the finding to be of very low safety significance (Green). The finding does not have a cross-cutting aspect because the performance deficiency is not reflective of present plant performance. |
| Site: | Ginna  |
|---|---|
| Report | IR 05000244/2012005 Section 1R15 |
| Date counted | Dec 31, 2012 (2012Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | W Schmidt T Fish G Dentel E Knutson N Perry T Mozlak E Burket D Dodson E Torres S Hammann N Floyd |
| INPO aspect | |
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Finding - Ginna - IR 05000244/2012005 | |||||||||||||||||||||||||||||||||||||||||
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Finding List (Ginna) @ 2012Q4
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