ENS 49703
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ENS Event | |
|---|---|
09:15 Jan 9, 2014 | |
| Title | Intake Structure Sluice Gate Inoperable |
| Event Description | At 2230 CST on 1/8/14 during operator rounds it was self identified there was a block of ice formed on the shaft and top of one of the intake structure sluice gates. This has bent the sluice gate operating shaft. At 0315 CST on 1/9/14 it was verified this gate could not be closed.
There are six intake sluice gates that are required to be able to close to act as flood barriers. The other 5 sluice gates are not affected by this condition. The licensee informed the NRC Resident Inspector. |
| Where | |
|---|---|
| Fort Calhoun Nebraska (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat | |
| LER: | 05000285/LER-2014-001 Regarding Reactor Shutdown Due to Sluice Gate Failure |
| Time - Person (Reporting Time:+-2.55 h-0.106 days <br />-0.0152 weeks <br />-0.00349 months <br />) | |
| Opened: | Scott Moeck 06:42 Jan 9, 2014 |
| NRC Officer: | Dan Livermore |
| Last Updated: | Jan 9, 2014 |
| 49703 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (99 %) |
| After | Power Operation (96 %) |
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