ENS 52267

v t e ENS Event
12:45 Sep 28, 2016
Title	Unit 2 Shutdown Required by Technical Specifications Due to Inoperable Diesel Generator
Event Description	On September 16, 2016, at 0036 [CDT], during a 24-hour Technical Specification (TS) endurance run, the Arkansas Nuclear One, Unit 2 (ANO-2) red train Emergency Diesel Generator (EDG) became inoperable when its inboard generator bearing failed. ANO-2 TS 3.8.1.1, 'AC Sources', requires an inoperable EDG to be restored to service within 14 days or actions to place the unit in a shutdown condition initiated. It has been determined that repair options cannot be completed within the Allowed Outage Time (AOT) due to unforeseen circumstances which evolved during recovery efforts. At 0745 [CDT], ANO-2 initiated plant shutdown due to the inability to restore the red train EDG. ANO-2 will be shutdown and cooled down to Mode 5. The licensee informed the NRC Resident Inspectors.

ENS 52267 +/-
Where
Arkansas Nuclear Arkansas (NRC Region 4)
Reporting

10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown
LER:	05000368/LER-2016-001
Time - Person (Reporting Time:+-2.98 h-0.124 days <br />-0.0177 weeks <br />-0.00408 months <br />)
Opened:	Albert Martin 09:46 Sep 28, 2016
NRC Officer:	Steve Sandin
Last Updated:	Sep 28, 2016
52267 - NRC Website
v • d • e

v t e Emergency Notification System
Arkansas Nuclear with 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown
WEEKMONTHYEAR2016-09-28T12:45:00 [Table view]
[ENS list for Arkansas Nuclear]

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