ENS 45711
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ENS Event | |
|---|---|
16:11 Feb 19, 2010 | |
| Title | Unsual Event Due to Carbon Dioxide Discharge in the High Pressure Coolant Injection (Hpci) Room |
| Event Description | The licensee reported that a CO2 discharge has occurred in the Unit 1 HPCI room. The cause and amount of CO2 released is not specifically known but the licensee judged that the room was not currently habitable based on the CO2. The licensee consequently declared an Unusual Event (UE) under EAL HU3.1 - "Toxic, Corrosive, Asphyxiant, or Flammable Material in Amounts That Could Adversely Impact Plant Operations.
The licensee stated that activities were in progress in the room at the time of the discharge. There is no indication of a fire in the room and there were no personnel injuries as a result of the discharge. The discharge also had no impact on plant operation. The licensee at this point plans to terminate the UE when the room is properly ventilated. The licensee has notified State and local authorities and the NRC Resident Inspector and does not plan a press release.
At 1330 EST on 2/19/10, the Unusual Event was terminated. The atmosphere in the HPCI room is back to normal. The CO2 source was from cylinders located in the HPCI room which is part of the fire suppression system. The licensee has notified the NRC Resident Inspector. Notified IRD (Grant), R2DO (Bartley), NRR EO (Thorp), DHS (Vestal) and FEMA (Fuller). |
| Where | |
|---|---|
Brunswick  North Carolina (NRC Region 2) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-4.63 h-0.193 days <br />-0.0276 weeks <br />-0.00634 months <br />) | |
| Opened: | Gary Roberts 11:33 Feb 19, 2010 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Feb 19, 2010 |
| 45711 - NRC Website | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (96 %) |
| After | Power Operation (96 %) |
WEEKMONTHYEARENS 567972023-10-16T02:56:00016 October 2023 02:56:00
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