ENS 43652
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ENS Event | |
|---|---|
19:04 Sep 19, 2007 | |
| Title | Alert Declared Due to Inadvertent Discharge of Co2 Into Switchgear Room |
| Event Description | At 1454 [EDT] an inadvertent discharge of CO2 occurred in the Division 3 switchgear room. The Control Building 261 foot (ground level) and below was evacuated. An ALERT emergency condition was declared at 1504 [EDT]. Emergency Response Facilities are being manned. NY State and Oswego County have been notified via the RECS line. Unit 1 was not affected. No personnel were injured. Unit 2 remains at full power. Cause is under investigation.
The licensee notified the NRC Resident Inspector.
The licensee terminated the ALERT at 2147 EDT on 9/19/07 base on restoration of free access in the control building and isolation of CO2 fire protection discharge systems in Unit 2. All the CO2 discharge systems were manually isolated because the licensee could not conclusively determine the cause of the fault that led to the initial inadvertent actuation. The licensee has established compensatory fire protection actions. Trouble shooting into the cause of the event continues. The licensee has notified the State and local authorities of the event termination. The NRC Resident Inspector has also been notified. Regional and HQ NRC management have been notified including R1(Dapas), NRR (Dyer), IRD (McDermott), R1DO (Krohn), and NRR EO (McGinty). Notifications to external agencies initially notified of the event were made by the HOO. |
| Where | |
|---|---|
Nine Mile Point  New York (NRC Region 1) | |
| Reporting | |
| Emergency class: | Alert |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.32 h-0.138 days <br />-0.0198 weeks <br />-0.00455 months <br />) | |
| Opened: | Mike Cazzolli 15:45 Sep 19, 2007 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Sep 19, 2007 |
| 43652 - NRC Website | |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 537652018-12-02T05:00:0002 December 2018 05:00:00
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