ENS 49085
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ENS Event | |
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19:00 May 31, 2013 | |
Title | Unanalyzed Condition Concerning Flooding Mitigation |
Event Description | On May 31, 2013, during an aggregate review of issues raised during a focused self assessment of external flooding mitigation, it was concluded that the A.6 Acts of Nature procedure may not adequately protect equipment required to maintain safe shutdown from the external probable maximum flood.
The plant is currently in Mode 4, Cold Shutdown for refueling. MNGP [Monticello Nuclear Generating Plant] is addressing the inadequacies. This condition is being reported in accordance with 10 CFR 50.72(b)(3)(ii)(B) Unanalyzed Condition. Compensatory measures are being prepared including procedure changes, additional barriers, and contingency actions. The licensee notified the NRC Resident Inspector. |
Where | |
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Monticello ![]() Minnesota (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
LER: | 05000263/LER-2013-003 Regarding Inadequate External Flooding Procedure 05000263/LER-2013-003-01 Regarding Inadequate External Flooding Procedure 05000263/LER-2013-003-02 Regarding Inadequate External Flooding Procedure |
Time - Person (Reporting Time:+0.08 h0.00333 days <br />4.761905e-4 weeks <br />1.09584e-4 months <br />) | |
Opened: | Lieutenant Christos 19:05 May 31, 2013 |
NRC Officer: | Mark Abramovitz |
Last Updated: | May 31, 2013 |
49085 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Not Critical |
Scram | No |
Before | Cold Shutdown (0 %) |
After | Cold Shutdown (0 %) |
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