05000336/FIN-2014011-02
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Finding | |
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| Title | Inadequate Implementation of Dominions Design Change Process |
| Description | The NRC identified a finding of very low safety significance (Green), in that Dominion did not ensure correct implementation of their design change process procedure when establishing licensing basis requirements for removal of the SPS. Specifically, Dominion did not correctly evaluate the impact of removing the system on the requirements of General Design Criterion (GDC) 17 and did not address the failure mechanism of this new design in the design change documents, as required by their design change procedure. Dominion entered this issue into the corrective action program for resolution (CR 553967 and CR 551068). The team determined that Dominions failure to implement their design change process procedure was a performance deficiency. This performance deficiency was more than minor because it was associated with the design control attribute of the Initiating Events Cornerstone and affected the cornerstone objective of limiting the likelihood of events that upset plant stability and challenge critical safety functions during shutdown and power operations. The team performed a risk screening in accordance with IMC 0609, Appendix A, Significance Determination Process for Findings At-Power, using Exhibit 1, Initiating Events Screening Questions, Section C, Support System Initiators. The answer to the question in Section C would be NO, because the finding did not increase the likelihood of a loss of two transmission lines with one line out of service (OOS), and affect mitigation equipment. The team determined that this finding had a cross-cutting aspect in the area of Human Performance, Procedure Adherence, because the design change process procedure was not adequately followed, in that the impact of the change on the current design basis and licensing bases was not evaluated correctly. |
| Site: | Millstone  |
|---|---|
| Report | IR 05000336/2014011 Section 4OA5 |
| Date counted | Sep 30, 2014 (2014Q3) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | R Rolph W Cook W Schmidt B Haagensen C Cahill C Lally D Jackson E Burket J Patel P Cataldo P Ott |
| CCA | H.8, Procedure Adherence |
| INPO aspect | WP.4 |
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Finding - Millstone - IR 05000336/2014011 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Millstone) @ 2014Q3
Self-Identified List (Millstone)
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