05000272/FIN-2014004-03
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Finding | |
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Title | Incomplete Corrective Action on Current Transformers Results in Reactor Trip |
Description | A Green, self-revealing finding against PSEG procedure NC.WM-AP.ZZ-0002, Performance Improvement Process, Revision 3, was identified for incomplete corrective actions when a Unit 1 main generator phase C differential current lockout relay tripped and resulted in a reactor trip. Specifically, a design change package had not been properly implemented in 2004 in response to a similar 2001 reactor trip. PSEG conducted repairs, visual inspections, and testing, entered this matter in its corrective action program, and completed a root cause analysis. The issue was more than minor since it was associated with the design control attribute of the initiating events cornerstone and adversely affected its objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. In accordance with IMC 0609, Attachment 4 and Exhibit 1 of Appendix A, the inspectors determined that this finding is of very low safety significance, or Green, because the finding did not cause both 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. The inspectors determined there was no cross-cutting aspect associated with this finding since it was not representative of current PSEG performance. Specifically, in accordance IMC 0612, the causal factors associated with this finding occurred outside the nominal three-year period of consideration and were not considered representative of present performance. |
Site: | Salem |
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Report | IR 05000272/2014004 Section 4OA3 |
Date counted | Sep 30, 2014 (2014Q3) |
Type: | Finding: Green |
cornerstone | Initiating Events |
Identified by: | Self-revealing |
Inspection Procedure: | IP 71153 |
Inspectors (proximate) | A Patel A Ziedonis E Burket G Dentel J Schoppy P Finney R Barkley |
INPO aspect | |
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Finding - Salem - IR 05000272/2014004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Salem) @ 2014Q3
Self-Identified List (Salem)
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