05000482/FIN-2011009-01
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Finding | |
|---|---|
| Title | Inadequate Procedure To Adjust the Compensation In Emergency Diesel Generator Governor |
| Description | A self-revealing noncited violation of Technical Specification 5.4.1.a, Procedures, was identified for the failure to include essential information needed to correctly adjust the emergency diesel generator governor actuator compensation potentiometer in Work Order 10-327976-000. Specifically, on May 23, 2011, maintenance personnel adjusted the actuator compensation potentiometer by following instructions from the system engineer per Work Order 10-327976-000. Work Order 10-327976-000 did not contain the cautionary note from Procedure MPE NE-003, Governor Adjustments for Emergency Diesel Generator NE01, which stated, DO NOT set actuator compensation adjustor below 1.5. The maintenance personnel set the potentiometer to 1.0. This improper adjustment resulted in Emergency Diesel Generator A being declared inoperable due to excessive load swings on September 1, 2011. The finding is more than minor because it was associated with the procedure quality attribute of the Mitigating Systems Cornerstone and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using the Manual Chapter 0609, Significance Determination Process, Phase 1 Worksheets, the finding was determined to have very low safety significance (Green) because it was a design or qualification issue that was confirmed not to represent an actual loss of safety function of the emergency diesel generator, because the unit was still able to operate properly in the isochronous mode. This finding was determined to have a crosscutting aspect in the Resources component of human performance because the licensee did not provide complete, accurate and up-to-date procedures/work orders to plant personnel because the licensee had not developed procedure guidance sufficiently detailed to ensure maintenance personnel properly adjusted the compensating actuator potentiometer for the electronic governor |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2011009 Section 4OA5 |
| Date counted | Mar 31, 2012 (2012Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | N O'Keefe |
| Violation of: | Technical Specification |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Wolf Creek - IR 05000482/2011009 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2012Q1
Self-Identified List (Wolf Creek)
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