05000254/FIN-2009005-03
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Finding | |
|---|---|
| Title | Temperature Indicating Probe Found Broken in the Unit 2 Diesel Generator Coolant System |
| Description | A finding of very low safety significance and a NCV of 10 CFR 50 Appendix B, Criterion V, Instructions, Procedures, and Drawings, was self-revealed for the installation of an inappropriate component into the Unit 2 emergency diesel generator coolant system. Specifically, the licensee failed to properly perform a part evaluation for a replacement temperature indicator (TI) designated as augmented quality. This resulted in the TI probe shearing off in the coolant flow stream and causing foreign material to enter the coolant system. Immediate corrective actions included the installation of an appropriately approved TI and recovery of foreign material from the system. The same part evaluation process was used for risk-significant components independent of the system being worked. Therefore, this finding was more than minor because, if left uncorrected, this performance deficiency could lead to unplanned unavailability of safety-related or risk-significant equipment and would become a more significant safety concern. The inspectors performed a Phase 1 SDP screening and concluded that the issue was of very low safety significance (Green) because the failure of the TI did not result in unplanned inoperability or loss of function of the diesel generator. The inspectors determined that this finding did not have a cross-cutting aspect. This performance deficiency is not indicative of current licensee performance. The decision to install this type of TI was made in October 2007. The process which allowed this performance deficiency was identified and corrected through procedure and policy revisions in February 2008. |
| Site: | Quad Cities  |
|---|---|
| Report | IR 05000254/2009005 Section 4OA2 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | B Cushman C Mathews C Moore J Mcghee M Bielby M Mitchell M Ring R Jickling R Orlikowski |
| INPO aspect | |
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Finding - Quad Cities - IR 05000254/2009005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Quad Cities) @ 2009Q4
Self-Identified List (Quad Cities)
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