ENS 47275
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ENS Event | |
|---|---|
15:56 Sep 18, 2011 | |
| Title | Alert Declared Due to a Freon Gas Release Into a Safe Shutdown Equipment Area |
| Event Description | An Alert was declared at Callaway Nuclear Plant at 1056 [CDT] due to EAL HA3.1. Access to an Auxiliary Building area which is prohibited due to release of toxic gas which jeopardizes operation of systems required to maintain safe operations or safely shutdown the reactor. EAL HU3.1 (Unusual Event) is also applicable at the same time.
The cause of the toxic gas release was a Freon gas leak from the 'A' Control Room air conditioner unit. The licensee has notified the NRC Resident Inspector and state and local government. Also notified USDA (Pitt) and HHS (Emerson).
At 1737 CDT, Callaway Nuclear Plant exited from the Alert for EAL HA3.1, and exited from the Unusual Event for EAL HU3.1. The plant continues to operate at 100% power in Mode 1. There was no radiological release due to this event. Additionally, a press release will be performed after the event closeout. The licensee has notified the NRC Resident Inspector and state and local government. Notifications were also given to R4DO (Pick), NRR EO (Giitter), IRD-MOC (Morris), HQ PAO (Hayden), DHS (Gates), FEMA (Via), DOE (Foote), USDA (Sanders) and HHS (Hoskins). |
| Where | |
|---|---|
Callaway  Missouri (NRC Region 4) | |
| Reporting | |
| Emergency class: | Alert |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.25 h-0.135 days <br />-0.0193 weeks <br />-0.00445 months <br />) | |
| Opened: | David Lantz 12:41 Sep 18, 2011 |
| NRC Officer: | John Knoke |
| Last Updated: | Sep 18, 2011 |
| 47275 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 492192013-07-27T04:49:00027 July 2013 04:49:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Declared Due to a Fire in the Turbine Building Lasting Greater than 15 Minutes ENS 472752011-09-18T15:56:00018 September 2011 15:56:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert Declared Due to a Freon Gas Release Into a Safe Shutdown Equipment Area ENS 458372010-04-13T17:00:00013 April 2010 17:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to an Identified Leakage Exceeding 25 Gallons Per Minute ENS 448642009-02-19T16:21:00019 February 2009 16:21:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Main Generator Hydrogen Gas Leak ENS 436222007-09-07T04:22:0007 September 2007 04:22:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Leakage from Reactor Coolant System >10 Gpm ENS 432792007-04-05T15:23:0005 April 2007 15:23:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert Declared Due to a Fire in the Control Bulding 2013-07-27T04:49:00 | |
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