Event Notification Report for October 23, 2014

TURBINE BUILDING EXHAUST SAMPLE RACK DECLARED NON-FUNCTIONAL

"A planned outage for the Turbine Building Exhaust Air Radiation Indicating Switch (TEA-RIS-13) and the Turbine Building Process Radiation Monitoring Sample Rack (TEA-SR-26) for health inspection was initiated at 1046 PDT on 10/23/14. Due to maintenance retests taking longer than expected and in anticipation of possibly exceeding 72 hours for the planned outage, this event is being reported as a major loss of assessment capability under regulation 10 CFR 50.72(b)(3)(xiii). Compensatory measures have been implemented to obtain radiation readings from the associated effluent release pathway during the outage. Field team assessment function was unaffected and remains available.

"The Resident Inspector will be notified."

FITNESS FOR DUTY - NON LICENSED SUPERVISOR FAILED FITNESS FOR DUTY TEST

A non-licensed employee supervisor had a confirmed positive result for alcohol during a random fitness-for-duty test. The employee's access to the plant has been suspended.

The NRC Resident Inspector has been informed.

SECONDARY CONTAINMENT INOPERABLE DUE TO BOTH AIRLOCK DOORS OPEN SIMULTANEOUSLY

"At 0107 CDT on October 23rd, 2014, both doors in one of the Secondary Containment airlocks were momentarily open concurrently. This occurred during vessel drain down following refueling activities, an Operation with the Potential to Drain the Reactor Vessel (OPDRV), which required Secondary Containment to be operable. The doors being open at the same time resulted in the momentary inoperability of Secondary Containment. One of the doors was immediately closed, and Secondary Containment was restored to an operable status.

"The station [Duane Arnold] has now completed the OPDRV associated with vessel drain down, and Secondary Containment is no longer required to be operable.

"The Resident Inspector has been notified."

* * * RETRACTION FROM BOB MURRELL TO JOHN SHOEMAKER AT 1232 EST ON 12/17/14 * * *

"The purpose of this notification is to retract a previous report made on 10/23/2014, at 0948 [EDT] (EN 50560). Notification of the event to the NRC was initially made as a result of an event where both doors in one of the Secondary Containment airlocks were momentarily open concurrently. This occurred during vessel drain down following refueling activities, an Operation with the Potential to Drain the Reactor Vessel (OPDRV), which required Secondary Containment to be operable. The doors being open at the same time resulted in the momentary inoperability of Secondary Containment. One of the doors was immediately closed, and Secondary Containment was restored to an operable status.

"Subsequent to the initial report, NextEra Energy Duane Arnold (NextEra) has determined that the doors in question were not mechanically degraded such that they were incapable of being closed. A momentary condition of having both secondary containment airlock doors open for a matter of seconds is not an event or condition that could have prevented the fulfillment of a safety. Furthermore, the conduct of OPDRVs during a momentary opening of both secondary containment doors that is immediately rectified does not constitute a condition prohibited by TS.

Therefore, this event is not considered a Safety System Functional Failure or a Condition Prohibited by TS and is not reportable to the NRC as a Licensee Event Report (LER) per 10 CFR 50.73.

The NRC Senior Resident Inspector has been notified.

Notified the R3DO (McCraw).
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FITNESS FOR DUTY - EMPLOYEE SUPERVISOR FAILED FITNESS FOR DUTY TEST

A non-licensed employee supervisor had a confirmed positive result for alcohol during a for cause fitness-for-duty test. The employee's access to the plant has been suspended.

The licensee has informed the NRC Resident Inspector.