05000416/FIN-2015007-06
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Finding | |
|---|---|
| Title | Failure to Perform Surveillance Requirement 3.8.1.9 |
| Description | The team identified a Green, non-cited violation of Technical Specification 3.8.1, AC Sources-Operating, LCO 3.8.1, which requires that three diesel generators be operable. Specifically, since July 1985, the licensee failed to perform Surveillance Requirement 3.8.1.9, because surveillance testing performed did not verify that each diesel generator could reject the single largest post-accident load and maintain engine speed within the required criteria. In response to this issue, the licensee performed an immediate operability determination to confirm that test results from full load reject indicated that, if performed correctly, the results of the Surveillance Requirement 3.8.1.9 test would be acceptable. This finding was entered into the licensees corrective action program as Condition Reports CR-GGN-2015-4611 and CR-GGN-2015-4627. The team determined that the failure to perform Technical Specification Surveillance Requirement 3.8.1.9 was a performance deficiency. This performance deficiency was more than minor, and therefore a finding, 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 to respond to initiating events to prevent undesirable consequences. Specifically, the surveillance procedure error resulted in the acceptance of test results that did not satisfy Technical Specification Surveillance Requirement 3.8.1.9; therefore the test did not demonstrate diesel generator operability. In accordance with Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power, dated June 19, 2012, Exhibit 2, Mitigating Systems Screening Questions, the finding was determined to have very low safety significance (Green) because it was a design or qualification deficiency that did not represent a loss of functionality; did not represent an actual loss of safety function of the system or train; did not result in the loss of one or more trains of nontechnical specification equipment; and did not screen as potentially risk significant due to -5- Attachment seismic, flooding, or severe weather. This finding did not have a crosscutting aspect because the most significant contributor did not reflect current licensee performance. |
| Site: | Grand Gulf |
|---|---|
| Report | IR 05000416/2015007 Section 1R21 |
| Date counted | Dec 31, 2015 (2015Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | D Loveless H Leake J Watkins L Brandt R Latta T Farnholtz W Sherbin J Mchugh |
| Violation of: | Technical Specification - Procedures Technical Specification |
| INPO aspect | |
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Finding - Grand Gulf - IR 05000416/2015007 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Grand Gulf) @ 2015Q4
Self-Identified List (Grand Gulf)
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