05000483/FIN-2011007-02
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Finding | |
|---|---|
| Title | Failure to Follow Procedure for Turbine-Driven Auxiliary Feedwater Pump Postmaintenance Testing |
| Description | The inspectors identified a noncited violation of Technical Specification 5.4.1.a involving five examples of failure to follow Procedure OTS-FC-0006, TDAFW Pump Post-Maintenance Test Run on Aux Steam. Specifically, operators failed to follow an existing total flow precaution in Procedure OTS-FC-0006 which resulted in the axial unloading, rolling element ball skidding, and subsequent degradation to the turbine-driven auxiliary feedwater pump inner outboard thrust bearing. Following initial condition discovery during planned maintenance and as immediate corrective actions, the licensee declared the turbine-driven auxiliary feedwater pump inoperable, entered the applicable Technical Specification Limiting Condition for Operation, replaced the oil and bearings, restored the pump to operability, and initiated Callaway Action Request 201101042 to perform a root cause analysis. These findings were more than minor because they affected the equipment performance attribute of the Mitigating Systems Cornerstone and affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The finding was evaluated Using Manual Chapter 0609.04, Phase 1 -Initial Screening and Characterization of Findings. These findings were determined to be of very low safety significance (Green) because there was not a design or qualification deficiency that resulted in a loss of operability or functionality, they did not create a loss of system safety function of a single train for greater than the technical specification allowed outage time, they did not represent an actual loss of risk significant equipment, and they did not affect seismic, flooding, or severe weather initiating events. This finding has a cross-cutting aspect in the area of human performance associated with the work practices component because the licensee failed to ensure procedural adherence in the implementation of the turbine-driven auxiliary feedwater pump postmaintenance test procedure. |
| Site: | Callaway  |
|---|---|
| Report | IR 05000483/2011007 Section 4OA5 |
| Date counted | Jun 30, 2011 (2011Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | G Miller J Polickoski M Runyan M Chambers L Micewski D Dumbacher |
| Violation of: | Technical Specification |
| CCA | H.8, Procedure Adherence |
| INPO aspect | WP.4 |
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Finding - Callaway - IR 05000483/2011007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Callaway) @ 2011Q2
Self-Identified List (Callaway)
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