ENS 50642

v t e ENS Event
21:21 Nov 25, 2014
Title	Reactor Console Key Left in Control Console Unattended
Event Description	On Tuesday, November 25, 2014, a violation of Technical Specification A.1, 'Shutdown,' occurred at the USGS TRIGA research reactor. Contrary to the specification, the key to the console key switch was left in the control console, in the OFF position, while the control room was unoccupied. This condition existed intermittently for approximately nine minutes during the time period from 1421 MST to 1436 MST, when the Reactor Supervisor discovered the key. The reactor was shutdown during this time period, and the staff members were performing routine maintenance. The facility shutdown checklist had been completed, and the key had been locked in a lock box, but the key was subsequently removed from the lock box by a Senior Reactor Operator and put in the console switch for maintenance checks. The reactor was continuously occupied by reactor staff during this event, and there were no non-staff personnel present. This event is being reported to the NRC's facility inspector, NRC Operations Center, the USGS Reactor Administrator, and the USGS Reactor Operations Committee.

ENS 50642 +/-
Where
U. S. Geological Survey Denver, Colorado (NRC Region 4)
License number:	R-113
Reporting

Non
Time - Person (Reporting Time:+-4.13 h-0.172 days <br />-0.0246 weeks <br />-0.00566 months <br />)
Opened:	Timothy Debey 17:13 Nov 25, 2014
NRC Officer:	Donald Norwood
Last Updated:	Nov 25, 2014
50642 - NRC Website
v • d • e

v t e Emergency Notification System
U. S. Geological Survey with Non
WEEKMONTHYEAR2014-04-08T16:27:00 [Table view]
[ENS list for U. S. Geological Survey]

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