ENS 49314
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ENS Event | |
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16:00 Aug 29, 2013 | |
Title | Failure to Address All the Effects of External Flooding Scenarios |
Event Description | On August 28, 2013, Monticello Nuclear Generating Plant (MNGP) was notified of the NRC's final significance determination for a finding involving the failure to maintain a procedure addressing all of the effects of an external flooding scenario on the plant. Specifically, MNGP failed to maintain flood Procedure A.6, 'Acts of Nature,' such that it could support the timely implementation of flood protection activities within the 12 day timeframe credited in the design basis as stated in the updated safety analysis report.
The finding is not a current safety concern. On February 15, 2013, actions were completed to reduce the flood mitigation plan timeline to less than 12 days by developing an alternate plan for flood protection features, pre-staging equipment and materials, improving the quality of the A.6 procedure, and preplanning work orders necessary to carry out Procedure A.6 actions. The NRC Resident Inspector has been notified. |
Where | |
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Monticello Minnesota (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
Time - Person (Reporting Time:+2.58 h0.108 days <br />0.0154 weeks <br />0.00353 months <br />) | |
Opened: | Mark Ihlenfeldt 18:35 Aug 29, 2013 |
NRC Officer: | Vince Klco |
Last Updated: | Aug 29, 2013 |
49314 - NRC Website
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Unit 1 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (98 %) |
After | Power Operation (98 %) |
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