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Event Notification Report for June 19, 2016

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
06/18/2016 - 06/19/2016

EVENT NUMBERS
52022

Power Reactor
Event Number: 52022
Facility: DUANE ARNOLD
Region: 3     State: IA
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: TONY LEWIS
HQ OPS Officer: STEVE SANDIN
Notification Date: 06/19/2016
Notification Time: 21:38 [ET]
Event Date: 06/19/2016
Event Time: 15:33 [CDT]
Last Update Date: 06/19/2016
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
Person (Organization):
LAURA KOZAK (R3DO)
Power Reactor Unit Info
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation
Event Text
SECONDARY CONTAINMENT INOPERABLE

"At 1533 CDT on 06/19/2016, while performing Tech Spec Secondary Containment Airlock verification testing, both doors of a Secondary Containment Airlock were reported to be open simultaneously. The identified condition caused Secondary Containment to be considered inoperable. Upon discovery, immediate action was taken to close the doors restoring Secondary Containment. Airlock doors were under control of plant personnel throughout the event.

"This notification is being made pursuant to 10 CFR 50.72(b)(3)(v)(C)."

The licensee informed the NRC Resident Inspector.