ENS 49880
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ENS Event | |
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21:05 Mar 6, 2014 | |
Title | Secondary Containment Airlock Door Interlock Malfunction |
Event Description | At 1605 EST on March 6, 2014, Operations determined that both the inner and outer secondary containment airlock doors, on the 50 foot elevation of the reactor building, had been simultaneously opened for approximately one minute on March 5, 2013. This event occurred while an employee was exiting secondary containment. The inner door failed to latch and opened as the employee was opening the outer door. Upon recognition of the condition the employee took action to secure both doors. The cause of this event was malfunction of the secondary containment airlock door interlock.
This condition is being reported in accordance with 10 CFR 50.72(b)(3)(v)(C), event or condition that could have prevented fulfillment of a safety function needed to control the release of radioactive material. With both doors open, Surveillance Requirement 3.6.4.1.3 of Technical Specification 3.6.4.1, Secondary Containment, was not met, rendering secondary containment inoperable. Repairs to the secondary containment airlock door interlock have been completed. This event did not result in any adverse impact to the health and safety of the public. The NRC Senior Resident Inspector has been notified. |
Where | |
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Brunswick North Carolina (NRC Region 2) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material | |
LER: | 05000324/LER-2014-001 |
Time - Person (Reporting Time:+-0.4 h-0.0167 days <br />-0.00238 weeks <br />-5.4792e-4 months <br />) | |
Opened: | Mitch Stacy 20:41 Mar 6, 2014 |
NRC Officer: | Daniel Mills |
Last Updated: | Mar 6, 2014 |
49880 - NRC Website
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Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
WEEKMONTHYEARENS 528882017-08-04T19:11:0004 August 2017 19:11:00
[Table view]10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Secondary Containment Inoperable Due to Opening in Service Water Piping ENS 500462014-04-20T06:15:00020 April 2014 06:15:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Loss of Secondary Containment Due to Opening in Reactor Building Roof Drain Piping ENS 499212014-03-17T11:50:00017 March 2014 11:50:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Secondary Containment Airlock Door Interlock Malfunction ENS 499102014-03-13T13:37:00013 March 2014 13:37:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Apparent Secondary Containment Airlock Door Interlock Malfunction ENS 498802014-03-06T21:05:0006 March 2014 21:05:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Secondary Containment Airlock Door Interlock Malfunction 2017-08-04T19:11:00 | |
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