4 septembre 2014
Le dépannage est en cours pour rétablir cette fonction de sécurité.
Type : Fukushima 1 - Puissance : 2 957 MWth - Première divergence n° 1 : 10/1971 ; n° 2 : 04/1972
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Event Number : 50427
Facility : QUAD CITIES - State : IL Unit : [1] [2] - RX Type : [1] GE-3,[2]
Event Date : 09/04/2014 - Event Time : 19:05
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Initial PWR Current PWR 1 N Y 100 % Power Operation 100 % Power Operation 2 N Y 100 % Power Operation 100 % Power Operation
Event Text
CONTROL ROOM EMERGENCY VENTILATION (CREV) SYSTEM INOPERABLE
"On September 04, 2014, at 1905 hours [CDT], the Control Room Emergency Ventilation (CREV) system was declared inoperable due to the Air Handling Unit (AHU) tripping upon restoration of Control Room Ventilation following testing of Reactor Building Ventilation instrumentation. Troubleshooting is in progress at this time.
"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 10CFR50.72(b)(3)(v)(D), ’[any] 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 licensee has notified the NRC Resident Inspector.
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