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At 1320 CDT, on April 16, 2015, both doors … At 1320 CDT, on April 16, 2015, both doors of a Secondary Containment Airlock were reported to be open. The doors being open at the same time caused a failure to meet SR 3.6.4.1.2 to verify that either the outer door(s) or inner door(s) in each Secondary Containment access opening are closed. The identified condition caused Secondary Containment to be considered inoperable per TS LCO 3.6.4.1. Upon discovery, immediate action was taken to close the doors. The doors were open concurrently for a momentary amount of time. The action to close the door allowed SR 3.6.4.1.2 to be met, and restored Secondary Containment to an operable status.</br>The notification is being made pursuant to 10 CFR 50.72(b)(3)(v)(C).</br>The NRC Resident Inspector has been notified.</br>The licensee is investigating how the electrical interlock failed to prevent this occurrence.terlock failed to prevent this occurrence. +
18:20:00, 16 April 2015 +
50,989 +
18:06:00, 16 April 2015 +
18:20:00, 16 April 2015 +
At 1320 CDT, on April 16, 2015, both doors … At 1320 CDT, on April 16, 2015, both doors of a Secondary Containment Airlock were reported to be open. The doors being open at the same time caused a failure to meet SR 3.6.4.1.2 to verify that either the outer door(s) or inner door(s) in each Secondary Containment access opening are closed. The identified condition caused Secondary Containment to be considered inoperable per TS LCO 3.6.4.1. Upon discovery, immediate action was taken to close the doors. The doors were open concurrently for a momentary amount of time. The action to close the door allowed SR 3.6.4.1.2 to be met, and restored Secondary Containment to an operable status.</br>The notification is being made pursuant to 10 CFR 50.72(b)(3)(v)(C).</br>The NRC Resident Inspector has been notified.</br>The licensee is investigating how the electrical interlock failed to prevent this occurrence.terlock failed to prevent this occurrence. +
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Regarding Both Doors in Secondary Containment Airlock Opened Concurrently +, 05000331/LER-2015-001-01, LERs 15-001-01 and 15-003-01 for Duane Arnold Regarding Both Doors in Secondary Containment Airlock Opened Concurrently +, 05000331/LER-2015-003, Regarding Both Doors in Secondary Containment Airlock Opened Concurrently + and LERs 15-001-01 and 15-003-01 for Duane Arnold Regarding Both Doors in Secondary Containment Airlock Opened Concurrently +
00:00:00, 16 April 2015 +
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22:18:03, 24 September 2017 +
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18:20:00, 16 April 2015 +
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