05000336/FIN-2015003-03
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | 10 CFR 50, Appendix B, Criterion VII, Control of Purchased Material, Equipment, and Services, requires, in part, that measures shall be established to assure that purchased services conform to the procurement documents. Contrary to Criterion VII, Design Change MP3-09-01030, Replacement of Actuators on 3FWS*CTV41 A/D (FWIVs), was supplied by Dominions vendor (Flowserve) and accepted by Dominion with an inadequate valve weak link analysis (valve backseat determined to be the weak link versus the steam coupling bolts). This was identified by Dominion during installation of MP3-09-01030 which required significant changes to the modification design prior to returning the FWIVs to service. This issue is more than minor because, if left uncorrected, the issue would have the potential to lead to a more significant safety concern. Specifically, not correcting the valve weak link analysis had the potential to lead to damage and/or failure of the FWIV stem coupling bolts rendering the valve inoperable. The inspectors evaluated this finding using IMC 0609.04, Initial Characterization of Findings, and IMC 0609, Appendix A, Exhibit 3, Barrier Integrity Screening Questions. The inspectors determined that the finding was of very low safety significance (Green) because the finding did not represent an actual open pathway in the physical integrity of reactor containment. Dominion documented the issue in CRs 564977 and 564801. |
| Site: | Millstone  |
|---|---|
| Report | IR 05000336/2015003 Section 4OA7 |
| Date counted | Sep 30, 2015 (2015Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | B Haagensen D Silk E Dipaolo H. Anagnostopoulus J Amberosini L Mckown R Mckinley S Barr S Chaudhary K Reid |
| Violation of: | 10 CFR 50 Appendix B Criterion VII, Control of Purchased Material, Equipment, and Services |
| INPO aspect | |
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Finding - Millstone - IR 05000336/2015003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Millstone) @ 2015Q3
Self-Identified List (Millstone)
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