ENS 50123
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ENS Event | |
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17:36 May 19, 2014 | |
Title | Containment Declared Inoperable Due to Containment Fan Coil Leak |
Event Description | At approximately 1236 CDT on May 19, 2014, a cooling water leak was identified on 23 Containment Fan Coil Unit flange. Unit 2 Containment was declared inoperable, which required entry into Technical Specifications (TS) LCO 3.6.1 Condition A, Containment inoperable, in MODES 1, 2, 3, and 4. Immediate actions were taken to isolate the Fan Coil Unit and was isolated within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> from the initial identification of the leak and TS 3.6.1 Condition A was exited. This restored Containment to an Operable status. A Work Request (WR) was initiated to repair the leak, and to restore the 23 Containment Fan Coil Unit to an operable condition.
This condition is reportable under 10 CFR 50.72(b)(3)(v)(C), Event or Condition that Could Have Prevented Fulfillment of a Safety Function. The plant remains safe, and this condition does not pose any additional risk to the public. Additionally, our defense in depth strategies are relied upon to take actions to protect the health and safety of the public. The licensee has notified the NRC Resident Inspector. |
Where | |
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Prairie Island ![]() Minnesota (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material | |
Time - Person (Reporting Time:+0.67 h0.0279 days <br />0.00399 weeks <br />9.17766e-4 months <br />) | |
Opened: | Gene Dammann 18:16 May 19, 2014 |
NRC Officer: | Steve Sandin |
Last Updated: | May 19, 2014 |
50123 - NRC Website
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Unit 2 | |
---|---|
Reactor critical | Not Critical |
Scram | No |
Before | Hot Standby (0 %) |
After | Hot Standby (0 %) |
Prairie Island ![]() | |
WEEKMONTHYEARENS 508702015-03-07T17:55:0007 March 2015 17:55:00
[Table view]10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Containment Declared Inoperable Due to Containment Fan Coil Leak ENS 508082015-02-11T04:05:00011 February 2015 04:05:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Containment Declared Inoperable Due to Containment Fan Coil Leak ENS 506302014-11-20T16:22:00020 November 2014 16:22:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Containment Declared Inoperable Due to Containment Fan Coil Leak ENS 501232014-05-19T17:36:00019 May 2014 17:36:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Containment Declared Inoperable Due to Containment Fan Coil Leak ENS 500042014-04-07T11:00:0007 April 2014 11:00:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Control Room Special Vent Boundary Inoperable ENS 494952013-11-01T17:06:0001 November 2013 17:06:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Both Trains of Auxiliary Building Special Ventilation System Declared Inoperable ENS 492612013-08-10T01:28:00010 August 2013 01:28:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Inoperable Control Room Envelope ENS 488702013-03-31T04:44:00031 March 2013 04:44:00 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Both Trains of Auxiliary Building Special Ventilation System Declared Inoperable 2015-03-07T17:55:00 | |
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