05000483/FIN-2010002-02
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Finding | |
|---|---|
| Title | Failure to Ensure Suitable Replacement Parts Essential for the Operation of the Component Cooling Water System |
| Description | The NRC identified a noncited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, after the licensee failed to adequately select suitable replacement gaskets essential to the operation of the component cooling water system heat exchangers. On October 19, 2008, Callaway engineering personnel identified that the component cooling water heat exchangers, due to corrosion and inadequate gasket sealing, had a small gap between the divider plate and channel head such that it allowed essential service water flow to bypass the heat exchanger which resulted in a reduced heat transfer capability. Corrective actions to address the identified gap in the component cooling water heat exchanger were scheduled to be implemented during the licensees next refueling outage. The licensee entered the issue in the corrective action program as Callaway Action Request 201001900. This finding was greater than minor because it was associated with the Mitigating Systems Cornerstone attribute of design control and affects the associated cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using Manual Chapter 0609.04, Phase 1 Initial Screening and Characterization of Findings, this issue screened as very low safety significance because it was not a design or qualification deficiency that resulted in a loss of operability or functionality, did not create a loss of system safety function of a single train for greater than the technical specification allowed outage time and did not affect seismic, flooding, or severe weather initiating events. This finding was determined not to have a crosscutting aspect since it is a performance deficiency not reflective of current licensee performance |
| Site: | Callaway  |
|---|---|
| Report | IR 05000483/2010002 Section 1R15 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | D Dumbacher P Elkmann G Replogle G Miller J Groom |
| INPO aspect | |
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Finding - Callaway - IR 05000483/2010002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Callaway) @ 2010Q1
Self-Identified List (Callaway)
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