05000416/FIN-2015002-02
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Finding | |
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| Title | Failure to Identify High Vibration on the Division 3 EDG Soak Back Oil Pump |
| Description | The inspectors identified a non-cited violation of Technical Specification 5.4.1.a, for the failure to have appropriate maintenance instructions to review and analyze vibration data on the division 3 emergency diesel generator soak back oil pump. Specifically, Work Order WO 52582051 failed to ensure an appropriate review and analysis of the vibration data collected on the division 3 emergency diesel generator soak back oil pump. As a result, the soak back oil pump on the division 3 emergency diesel generator failed due to high vibration and the emergency diesel generator was declared inoperable. As corrective actions, the licensee repaired soak back oil pump. This issue was entered issue into the licensees corrective action program as Condition Report CR-GGN-2015-0071. This performance deficiency is more than minor, and therefore a finding, because it is associated with the equipment performance 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. Specifically, vibration data was collected, but was not appropriately reviewed and analyzed to identify a degrading soak back oil pump on the division 3 emergency diesel generator. The division 3 emergency diesel generator was declared inoperable when the failed pump coupling was identified by the licensee. Using Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power, and Inspection Manual Chapter 0609, Appendix A, Exhibit 2, Mitigating Systems Screening Questions, the inspectors determined that the finding is of very low safety significance (Green) because it: (1) was not a deficiency affecting the design or qualification of a mitigating structure, system, or component, and did not result in a loss of operability or functionality; (2) did not represent a loss of system and/or function; (3) did not represent an actual loss of function of at least a single train for longer than its technical specification allowed outage time, or two separate safety systems out-of-service for longer than their technical specification allowed outage time; and (4) did not represent an actual loss of function of one or more non-technical specification trains of equipment designated as high safety-significant in accordance with the licensees maintenance rule program. This finding has an avoid complacency crosscutting aspect within the human performance area because the licensee failed to recognize and plan for the possibility of mistakes, inherent risks, and properly implement appropriate error reduction tools. Specifically, the licensee failed to recognize the importance of including complete instructions to maintenance personnel to ensure that critical steps were accomplished |
| Site: | Grand Gulf  |
|---|---|
| Report | IR 05000416/2015002 Section 1R19 |
| Date counted | Jun 30, 2015 (2015Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.19 |
| Inspectors (proximate) | N Taylor R Alexander G Warnick J Mateychick L Carson M Schwieg M Young N Day |
| Violation of: | Technical Specification Technical Specification - Procedures |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
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Finding - Grand Gulf - IR 05000416/2015002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Grand Gulf) @ 2015Q2
Self-Identified List (Grand Gulf)
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