ENS 45935
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ENS Event | |
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18:30 May 19, 2010 | |
Title | Potentially Toxic Atmosphere in an Access Faciliity |
Event Description | At 1315 hours0.0152 days <br />0.365 hours <br />0.00217 weeks <br />5.003575e-4 months <br /> personnel performing repairs to an air conditioning system inside the Access Facility (AF) reported a Freon leak from a valve packing failure. All personnel were evacuated from the building. Radiation protection personnel entered the building and atmospheric sampling commenced. Sample results indicated a potentially toxic atmosphere in portions of the AF, and at 1330 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.06065e-4 months <br /> an Emergency Plan Unusual Event was declared on EAL HU7, 'Hazards and Other Conditions Affecting Plant Security.'
The AF was locked down and plant access and egress have been halted pending the restoration of AF atmosphere. Required security compensatory measures are in place. The Freon completely discharged from the affected air conditioner through the leak. Actions to establish a habitable atmosphere inside the AF continue. Units 1 and 2 are unaffected by this event and continue to operate at full power. The licensee notified the NRC Resident Inspector.
A habitable atmosphere has been re-established and conditions no longer meet an emergency action level. The Unusual Event was terminated at 1438 CDT on 5/19/2010. The licensee will notify the NRC Resident Inspector. Notified R3DO (Cameron), IRD (Gott), NRR (Ruland), DHS (Vestal), and FEMA (Barden). |
Where | |
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Quad Cities Illinois (NRC Region 3) | |
Reporting | |
Emergency class: | Unusual Event |
10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
Time - Person (Reporting Time:+-3.28 h-0.137 days <br />-0.0195 weeks <br />-0.00449 months <br />) | |
Opened: | Mark Bridges 15:13 May 19, 2010 |
NRC Officer: | Pete Snyder |
Last Updated: | May 19, 2010 |
45935 - 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 (100 %) |
After | Power Operation (100 %) |
WEEKMONTHYEARENS 525272017-02-02T01:38:0002 February 2017 01:38:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert - Fire in Safety Related System ENS 499882014-04-02T18:40:0002 April 2014 18:40:00 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 Alert Declared Due to Fire in Unit 2 Turbine Building ENS 459352010-05-19T18:30:00019 May 2010 18:30:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Potentially Toxic Atmosphere in an Access Faciliity ENS 446022008-10-27T08:03:00027 October 2008 08:03:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Explosion in the Protected Area ENS 408462004-06-28T06:47:00028 June 2004 06:47:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Earthquake Felt at the Site 2017-02-02T01:38:00 | |
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