ENS 49286
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ENS Event | |
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14:15 Aug 15, 2013 | |
Title | Diesel Generator Declared Inoperable Due to Damper Failing to Open |
Event Description | During a run of the Division 3 Diesel Generator room ventilation fan to perform thermograph, it was identified that the damper (1VD01YC) that provides the flow path from the outside area into the ventilation room would not open when the fan was started. This renders the Division 3 Diesel Generator inoperable. High Pressure Core Spray was declared inoperable at 1420 hours0.0164 days <br />0.394 hours <br />0.00235 weeks <br />5.4031e-4 months <br /> [CDT], but remains available. This report is being made pursuant to 10CFR50.72(b)(3)(v)(D) as an event or condition that could have prevented fulfillment of a safety function needed to mitigate the consequences of an accident.
The cause of the damper failing to open has not yet been determined. Troubleshooting is in progress to determine the cause and actions required to restore operability. The Division 1 and Division 2 Diesel Generators are operable. The licensee is in a 14-day shutdown TS LCO. The licensee has notified the NRC Resident Inspector. |
Where | |
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Clinton Illinois (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
LER: | 05000461/LER-2013-004 |
Time - Person (Reporting Time:+3.63 h0.151 days <br />0.0216 weeks <br />0.00497 months <br />) | |
Opened: | Ken Leffel 17:53 Aug 15, 2013 |
NRC Officer: | Dong Park |
Last Updated: | Aug 15, 2013 |
49286 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (92 %) |
After | Power Operation (92 %) |
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