05000244/FIN-2010006-01
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Finding | |
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| Title | |
| Description | The team identified an NRC-identified finding of very low safety Significance associated with a non-cited violation (NCV) of 10 CFR Part 50, Appendix B, Criterion XVI, \"Corrective Action,\" in that rneasures were not established to assure that a condition adverse to quality was prornptly identified and corrected. Specifically, after Ginna identified that monthly samples of the emergency diesel generator (EDG) jacket water system were not being taken and analyzed for chlorides and fluorides, a sample was not taken and analyzed for approximately five months. Additionally, after the analysis indicated that the chlorides were over twice the procedural limit, Ginna did not increase the chloride sampling frequency, did not take action to retum the chlorides to within specifications, and did not complete an analysis for long term effects on the EDG as required by chemistry procedure CH-138, \"Closed Cooling Water Systems Chemistry Optimization Plan,\" Revision 1. Ginna\'s corrective actions included evaluating the degradation of the A EDG jacket water due to the elevated chloride level in the A EDG jacket water heat exchanger exceeding 90 days and developing a plan to reduce the chloride level to within specification. This finding is more than minor because if left uncorrected, elevated chloride levels in the A EDG jacket water system could lead to a more significant safety concern. Specifically, elevated chlorides in the A EDG jacket water heat exchanger could lead to degradation of the jacket water heat exchanger through stress corrosion cracking and impact the reliability of the A EDG. This finding is associated with the Mitigating Systems Cornerstone and affects the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). The team determined that the finding was of very low safety significance (Green), because it was not a design or qualification deficiency confirmed not to result in loss of operability; did not result in a loss of safety function; and did not screen as potentially risk significant due to a seismic, flooding, or a severe weather initiating event. This finding has a cross-cutting aspect in the area of problem identification and resolution because Ginna did not take appropriate actions to address the elevated chloride level in the A EDG jacket water system (P.1 (d) per IMC 0310). |
| Site: | Ginna  |
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| Report | IR 05000244/2010006 Section 4OA2 |
| Date counted | Jun 30, 2010 (2010Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | M Modes G Dentel N Perry L Casey A Rao |
| CCA | P.3, Resolution |
| INPO aspect | PI.3 |
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Finding - Ginna - IR 05000244/2010006 | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Ginna) @ 2010Q2
Self-Identified List (Ginna)
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