ENS 51589
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ENS Event | |
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14:25 Dec 7, 2015 | |
Title | |
Event Description | On December 07, 2015, at 0825 hours0.00955 days <br />0.229 hours <br />0.00136 weeks <br />3.139125e-4 months <br /> (CST), the Control Room Emergency Ventilation (CREV) system was declared inoperable due to the Air Handling Unit (AHU) tripping upon attempting to swap from the non-safety related CR HVAC. Swapping was being performed to allow maintenance on the non-safety related system.
Technical Specification 3.7.4, Condition A, was entered which requires the CREV system to be restored to an operable status in seven (7) days. Additionally, Technical Specification 3.7.5, Condition A, was entered which requires CREV AC to be restored to an operable status in 30 days. This notification is being made in accordance with 10 CFR 50.72(b)(3)(v)(D), 'Event or Condition That Could Have Prevented Fulfillment of a Safety Function,' because the CREV system is a single train system required to mitigate the consequences of an accident. The NRC Resident Inspector was notified. The Licensee notified the Illinois Emergency Management Association. |
Where | |
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Quad Cities Illinois (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
LER: | 05000254/LER-2015-010 |
Time - Person (Reporting Time:+-0.38 h-0.0158 days <br />-0.00226 weeks <br />-5.20524e-4 months <br />) | |
Opened: | Adnon Ali 14:02 Dec 7, 2015 |
NRC Officer: | Jeff Herrera |
Last Updated: | Dec 7, 2015 |
51589 - 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 %) |
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