05000315/FIN-2015001-04
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Finding | |
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| Title | Auxiliary Feedwater Pump Declared Operable Without All Post-Maintenance Testing Complete |
| Description | The inspectors identified a finding of very-low safety significance with an associated NCV of TS 5.4.1.a, Procedures, for the failure to perform all required post-maintenance testing (PMT) before declaring the Unit 1 West Motor-Driven Auxiliary Feedwater Pump operable following maintenance. Following work to repair degraded room cooler piping for the pump, Essential Service Water (ESW) was restored to the piping. A report was made to the control room that no leakage was identified. During the following shift, after vibration testing was complete, operations staff reviewed the status of other maintenance tasks. In the electronic work management system, it was noted that a task to perform a leak check was in Finished status. Based on this review and the earlier report of no leaks, the associated Auxiliary Feedwater (AFW) pump was declared operable. However, approximately one hour later, the control room received a report that there were leaks from the pumps room cooler. Subsequent investigation by the licensee revealed that when the pump was declared operable, the American Society for Mechanical Engineers (ASME) Code-required leakage check had not been completed yet. The task for the leak check had actually been closed to another contingency task, which the operations staff did not believe was applicable when declaring the pump operable. Contrary to procedure PMP2291WMP001, Work Management Process Flowchart, the licensee did not ensure PMTs were complete and adequate for the work scope. The licensee declared the cooler and the pump inoperable and addressed the leakage. The finding is more than minor because it adversely 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. Specifically, the licensee returned the AFW system to an operable status prior to completing PMT. Further, the inspectors noted other recent examples of safety-related equipment that had been declared operable before the appropriate PMTs had been performed, indicating a more programmatic issue. In one case, new welds on charging system piping did not receive the ASME-Code inspections prior to the system being restored. In another instance, ESW flow was prematurely restored to a new control room chiller. As a result, a train of ESW and an associated AFW cooler became inoperable. The finding screened as Green, or very-low safety significance, because it did not represent an actual loss of function beyond Technical Specification allowed outage times. The finding had an associated cross-cutting aspect in the area of Human Performance; specifically, the aspect of H.4, Teamwork, because the performance deficiency occurred, in part, due to communication issues between and within organizations. |
| Site: | Cook  |
|---|---|
| Report | IR 05000315/2015001 Section 1R19 |
| Date counted | Mar 31, 2015 (2015Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.19 |
| Inspectors (proximate) | J Ellegood J Mancuso K Riemer L Rodriguez M Mitchell N Feliz-Adorno R Walton T Taylor |
| Violation of: | Technical Specification - Procedures Technical Specification |
| CCA | H.4, Teamwork |
| INPO aspect | PA.3 |
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Finding - Cook - IR 05000315/2015001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cook) @ 2015Q1
Self-Identified List (Cook)
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