ENS Event | |
|---|---|
13:49 Apr 15, 2008 | |
| Title | Residual Heat Removal System Declared Inoperable |
| Event Description | At 0849 the B train of service water (SW) AC and DC power distribution systems [were] declared inoperable due to voltage fluctuations below the Tech Spec minimum. During this time the A train of RHR for Unit 1 was inoperable due to an equipment outage. LCO 3.0.3 [was] entered due to both trains [of] RHR inoperable on Unit 1. At 1029 Unit 1 exited LCO 3.0.3 when the A train of RHR was restored. Currently ground isolation efforts are in progress on the B train SW power distribution system.
The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Farley  Alabama (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat | |
| Time - Person (Reporting Time:+3.4 h0.142 days <br />0.0202 weeks <br />0.00466 months <br />) | |
| Opened: | Tim Driggers 17:13 Apr 15, 2008 |
| NRC Officer: | John Knoke |
| Last Updated: | Apr 15, 2008 |
| 44142 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (61 %) |
| After | Power Operation (61 %) |
WEEKMONTHYEARENS 458122010-04-04T17:45:0004 April 2010 17:45:00
[Table view]10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Both Trains of Residual Heat Removal (Rhr) Inoperable ENS 441422008-04-15T13:49:00015 April 2008 13:49:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat Residual Heat Removal System Declared Inoperable ENS 431062007-01-18T22:00:00018 January 2007 22:00:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat Battery Charger Room Cooler Inoperable 2010-04-04T17:45:00 | |