Finding | |
|---|---|
| Title | Failure to Perform an IDO without delay for 3A EDG after Observing Indications of a Degraded Condition |
| Description | The inspectors identified a NCV of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures and Drawings, for failure to perform an immediate operability determination (IDO) for 3A Emergency Diesel Generator (EDG) upon discovering a degraded condition. Specifically, on December 19, 2017, the licensee failed to perform an IDO after identifying and confirming less than minimum cooling flow, thus leaving the EDG in an indeterminate state of operability.The performance deficiency is more than minor because it was associated with the equipment performance attribute and affected the associated cornerstone objective to ensure availability, reliability and capability of systems that respond to initiating events to prevent undesirable consequences. As a corrective action, the licensee performed operations to restore flow within the acceptable range and performed an IDO. The violation was entered into the licensee's CAP as CR 1370601. The inspectors determined that the finding had a cross-cutting aspect in the human performance area of H.13, Consistent Process, because the performance deficiency was caused by not following a consistent, systematic approach to making a decision concerning operability of the affected DG. |
| Site: | Browns Ferry  |
|---|---|
| Report | IR 05000296/2017004 Section 1R15 |
| Date counted | Dec 31, 2017 (2017Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | D Dumbacher M Kirk A Ruh N Hobbs R Patterson M Riley M Schwieg D Lanyi A Masters |
| Violation of: | 10 CFR 50 Appendix B Criterion V |
| CCA | H.13, Consistent Process |
| INPO aspect | DM.1 |
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Finding - Browns Ferry - IR 05000296/2017004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Browns Ferry) @ 2017Q4
Self-Identified List (Browns Ferry)
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