05000424/FIN-2017002-02
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Finding | |
|---|---|
| Title | Failure to Follow Work Instructions for Implementation of Open Phase Protection System |
| Description | (Green). A self -revealing, Green, non -cited violation of Technical Specifications 5.4.1.a, Procedures, was identified for the licensees failure to redline new wiring installation associated with an open phase protection system modification, as required by work instructions . As result, control circuit wires were not installed per wiring diagrams and caused a loss of the offsite power feed to the B train 4160- volt emergency power bus. The licensee's failure to redline new wiring installation associated with an open phase protection system modification installation, as required by work instruction SNC804606 and 3 maintenance procedure NMP -MA -017 was a performance deficiency. The licensee entered this issue into their corrective action program under condition reports 10343972 and 10344136 and restored offsite power to the emergency bus by correcting the wiring configuration . The performance deficiency was more than minor because it was associated with the Human Performance attribute of the Mitigating Systems cornerstone and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The finding was determined to be of very low safety significance (Green) because the in- service train of shutdown cooling (i.e. , 'A' train of the residual heat removal system ) was not affected. The finding was assigned a cross -cutting aspect of Procedure Adherence, in the Human Performance area becaus e individuals did not follow work instructions and redline procedures when installing new wiring for the open phase protection system [H.8] |
| Site: | Vogtle  |
|---|---|
| Report | IR 05000424/2017002 Section 4OA5 |
| Date counted | Jun 30, 2017 (2017Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | |
| Inspectors (proximate) | M Endress A Alen S Sanchez J Hickman D Lanyi M Kennard D Mas S Sandal |
| Violation of: | Technical Specification - Procedures |
| CCA | H.8, Procedure Adherence |
| INPO aspect | WP.4 |
| ' | |
Finding - Vogtle - IR 05000424/2017002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Vogtle) @ 2017Q2
Self-Identified List (Vogtle)
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