05000483/FIN-2015004-03
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Finding | |
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| Title | Failure to Follow Plant Procedure for Unit Reliability Team |
| Description | The inspectors reviewed a self-revealing finding for the licensees failure to follow plant procedures for the unit reliability team. Specifically, after delaying a modification to the plants turbine control system, no compensatory measures were implemented to minimize or prevent failure of the system due to aging of the system beyond its evaluated service life as required by plant Procedure APA-ZZ-00549, Appendix E, Unit Reliability Team Operations. The licensees failure to follow the plant procedure for the unit reliability team was a performance deficiency. The performance deficiency is more than minor, and therefore a finding, because it is associated with the equipment performance attribute of the Initiating Events Cornerstone and adversely affected the cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. Specifically, as no compensatory measures were implemented after the digital upgrade to the turbine control system was deferred from the spring 2013 refueling outage to the spring 2016 refueling outage, the turbine control system malfunctioned causing a runback of the turbine and downpower transient on the plant. Using Inspection Manual Chapter 0609, Appendix A, Exhibit 1, Initiating Events Screening Questions, dated June 19, 2012, the finding was determined to be of very low safety significance because it did not cause a reactor trip and the loss of mitigation equipment relied upon to transition the plant from the onset of the trip to a stable shutdown condition. This finding has a cross-cutting aspect in the teamwork component of the human performance cross-cutting area because the licensee did not ensure that individuals and work groups communicate across organizational boundaries to ensure nuclear safety is maintained. Specifically, the outage leadership team identified the need for the compensatory measures, but did not communicate the priority nor the effect on nuclear safety to site leadership to gain the resources needed to implement these measures. |
| Site: | Callaway  |
|---|---|
| Report | IR 05000483/2015004 Section 4OA2 |
| Date counted | Dec 31, 2015 (2015Q4) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | J O'Donnell M Langelier N Taylor P Hernandez T Hartman |
| CCA | H.4, Teamwork |
| INPO aspect | PA.3 |
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Finding - Callaway - IR 05000483/2015004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Callaway) @ 2015Q4
Self-Identified List (Callaway)
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