05000259/FIN-2015001-02
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Finding | |
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| Title | Failure to Have Simulator Fidelity with D EDG Control Switch |
| Description | A Self Revealing NCV of 10 CFR 55.46(c)(1), Simulation Facilities, was identified because the licensee failed to demonstrate simulator fidelity associated with D EDG control switch. The licensees immediate corrective actions were to replace the switch with one that matched the original design. This violation was entered into the licensees corrective action program as PER 990793. The performance deficiency was more than minor because it adversely affected the mitigating systems cornerstone objective of Human Performance. Specifically, the simulator fidelity issue contributed to a Human Error (Pre-Event) resulting in the D EDG being inoperable for 8 days and 9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br />. In accordance with NRC Inspection Manual Chapter 0609, Appendix I, the finding was determined to be of very low safety significance (Green) using the simulator fidelity flowpath (blocks 13 through 15). Specifically, Manual Chapter 0609, Appendix I, Operator Requalification Human Performance Significance Determination Process, block 15, established a Green finding because although the deficient simulator fidelity negatively affected operator performance, this did not occur during a reportable event. No cross-cutting aspect was assigned because the issue occurred greater than three years ago and is not indicative of current licensee performance. |
| Site: | Browns Ferry  |
|---|---|
| Report | IR 05000259/2015001 Section 1R11 |
| Date counted | Mar 31, 2015 (2015Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.11 |
| Inspectors (proximate) | A Ruh D Dumbacher D Retterer L Pressley M King T Stephen |
| Violation of: | 10 CFR 55.46 |
| INPO aspect | |
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Finding - Browns Ferry - IR 05000259/2015001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Browns Ferry) @ 2015Q1
Self-Identified List (Browns Ferry)
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