05000259/FIN-2017002-05
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | 10 CFR 50 Appendix B, Criterion V, Instructions, Procedures, and Drawings, required, in part, that activities affecting quality shall be prescribed by documented instructions, procedures, or drawings, of a type appropriate to the circumstances and shall be accomplished in accordance with these instructions, procedures, or drawings. Contrary to the above, between October 5, 2016 , and December 22, 2016, the 4kV shutdown board C degraded voltage relay timer was not installed in accordance with MAI -3.8, Installation of Electrical Components. The failure to install mounting screws of an appropriate length with suitable thread engagement for the seismic restraining strap resulted in the relay being inoperable for longer than the Technical Specification allowed outage time. The licensee entered the violation into the corrective action program as CR 1244680 and replaced t he damaged mounting screw and installed the seismic restraining strap. Using an exposure time of 78 days, the change in core damage frequency was conservatively estimated to be less than 4E -8 per year. The most dominant core damage s equences were those involving the loss of the high pressure injection systems. The significance of the finding was limited because it did not affect the 22 ability of the diesel generator to automatically start under loss of of fsite power conditions and it did not affect the ability of operators to manually start the diesel generator in response to degraded voltage conditions. The inspectors determined the finding was Green . |
| Site: | Browns Ferry  |
|---|---|
| Report | IR 05000259/2017002 Section 4OA7 |
| Date counted | Jun 30, 2017 (2017Q2) |
| Type: | NCV: Green |
| cornerstone | No Cornerstone |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | D Dumbacher T Stephen A Ruh J Dolecki |
| Violation of: | 10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion V |
| INPO aspect | |
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Finding - Browns Ferry - IR 05000259/2017002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Browns Ferry) @ 2017Q2
Self-Identified List (Browns Ferry)
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