05000413/FIN-2008006-01
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Finding | |
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| Title | Failure to Perform Adequate System Leakage Tests |
| Description | The team identified a Green non-cited violation (NCV) for a failure to comply with 10CFR50.55a(g)(4) in that, the licensee failed to perform adequate system leakage tests of buried Nuclear Service Water (RN) piping repairs. This issue was entered into the licensees corrective action program as Problem Identification Process C-08-07137. The performance deficiency associated with this finding involved failure to perform adequate system leakage tests of buried RN piping repairs. Specifically, wooden plugs remained in through wall defects during system leakage tests to verify the quality of eight repair welds to RN piping. By leaving the plugs in place, the repair welds cannot be shown to have been subject to the system pressure required by the ASME B&PV Code, resulting in inadequate system leakage tests, therefore the quality of the welds cannot be fully demonstrated. The failure to perform adequate system leakage tests is more than minor because it is associated with the Reactor Safety/Mitigating Systems Cornerstone attribute of Procedure Quality (testing procedures) and affected the cornerstone objective of ensuring the availability, reliability and capability of the RN system. Because the RN system remained operable but degraded and there was no loss of safety function, the failure to perform adequate system leakage tests was considered to be of very low safety significance (Green). This finding has a cross-cutting aspect in the area of problem identification and resolution in the component of corrective action program because the licensees extent of condition failed to recognize that repairs were non-conforming despite being signed by an Authorized Nuclear Inservice Inspector (ANII) P.1(c) (Section 4OA2.a.3) |
| Site: | Catawba  |
|---|---|
| Report | IR 05000413/2008006 Section 4OA2 |
| Date counted | Dec 31, 2008 (2008Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | J Rivera-Ortiz R Taylor R Cureton R Clagg J Kent L Pressley S Vias |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Catawba - IR 05000413/2008006 | |||||||||||||||||||||||||||||||||
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Finding List (Catawba) @ 2008Q4
Self-Identified List (Catawba)
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