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| Entered date | Event description | |
|---|---|---|
| ENS 52022 | 19 June 2016 21:38:00 | 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. |