05000336/FIN-2010003-03
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Finding | |
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| Title | |
| Description | The inspectors identified a Severity Level IV NCV of 10 CFR 50.72(b)(3)(v); in that, Dominion failed to make a timely 10 CFR 50.72 eighthour report to the NRC for a condition that, at the time of discovery, could have prevented secondary containment from fulfilling its safety function. On May 27, 2010, operations personnel found both sets of the auxiliary and service building tunnel exhaust dampers open which could have prevented secondary containment from fulfilling its safety function. Operations declared secondary containment inoperable, closed the auxiliary building tunnel exhaust dampers to restore operability, and initiated a 10 CFR 50.72 report. The inspectors determined that Dominion\\\'s failure to make a 10 CFR 50.72 eight-hour report to the NRC regarding the inoperable secondary containment as a condition that could have prevented it from fulfilling its safety function was a performance deficiency. The inspectors determined that traditional enforcement applied, since the failure to make a required report could adversely impact the NRC\\\'s ability to perform its regulatory function. In accordance with the NRC Enforcement Policy, Supplement I - Reactor Operations, Example D.4, a failure to make a required Licensee Event Report (LER) is categorized as a Severity Level IV violation. The inspectors determined that this finding had a cross-culling aspect in the Human Performance cross-culling area, Decision Making component, because Dominion did not use conservative assumptions in their decision-making when they could not demonstrate that secondary containment would have fulfilled its safety function H.1(b). |
| Site: | Millstone  |
|---|---|
| Report | IR 05000336/2010003 Section 1R04 |
| Date counted | Jun 30, 2010 (2010Q2) |
| Type: | TEV: Severity level IV |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.04 |
| Inspectors (proximate) | P Kaufman D Jackson B Haagensen C Bickett J Krafty S Shaffer D Dodson J Rady T Moslak J Richmond |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Millstone - IR 05000336/2010003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Millstone) @ 2010Q2
Self-Identified List (Millstone)
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