05000285/FIN-2010006-02
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Finding | |
|---|---|
| Title | Failure to Verify that the Turbine-driven Auxiliary Feedwater Pump Exhaust Backpressure Trip Lever was Fully Latched |
| Description | The team identified a noncited violation of Technical Specification 5.8.1.a regarding the licensees failure to implement written procedures as recommended in Regulatory Guide 1.33, Revision 2, Appendix A, February 1978. Paragraph 3.l of Appendix A requires procedures for startup, shutdown and operation of the auxiliary feedwater system. Specifically, the licensee had no procedural guidance to verify full engagement of the turbine-driven auxiliary feedwater pump FW-10 exhaust backpressure trip mechanism when latched. This resulted in the licensees failure to identify the partially latched condition of the exhaust trip mechanism which subsequently vibrated loose during a surveillance test causing a start failure of the pump, on February 17, 2010. The licensee entered this deficiency in their corrective action program as condition Report CR 2010-0813. This finding is greater than minor because it was associated with the Mitigating Systems Cornerstone attribute of procedural quality and it affected the 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,\" the 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. The finding has a crosscutting aspect in the area of problem identification and resolution associated with operating experience because the licensee failed to implement and institutionalize operating experience through changes to station operating procedures when they failed to incorporate industry information to verify the turbine-driven auxiliary feedwater pump is fully latched. |
| Site: | Fort Calhoun  |
|---|---|
| Report | IR 05000285/2010006 Section 4OA5 |
| Date counted | Jun 30, 2010 (2010Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | J Kirkland D Loveless L Willoughby J Clark M Chambers J Wingebach M Williams |
| Violation of: | Technical Specification - Procedures |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
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Finding - Fort Calhoun - IR 05000285/2010006 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Fort Calhoun) @ 2010Q2
Self-Identified List (Fort Calhoun)
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