ENS 50368

v t e ENS Event
20:45 Aug 14, 2014
Title	Agreement State Report - Inoperability of the Access Control System
Event Description	The following was received from the State of Colorado via email: CDPHE [Colorado Department of Public Health] received telephone notification of an inoperability of the access control system on 8/14/2014 at approximately 1445 [MDT]. Colorado State University, a research licensee, reported that a radiation monitor provided to detect the presence of high radiation levels in the radiation room of a panoramic irradiator was alarming when there was no [abnormal] radiation level present. One of the irradiator users noticed the audible alarm when their work was complete and they were leaving the area. The RSO responded and suspected a stuck source. Using a hand held radiation detection instrument, the irradiator door was opened and the irradiator room was entered. As the RSO entered the room there was no indication of radiation levels above what was expected when the source is in its shielded position, and as a result, it was determined that the source was in its shielded position. The room radiation monitor was reset but shortly after again alarmed without any [abnormal] radiation field present. The irradiator has been taken out of service and the monitor has been removed for repair. Colorado event report ID: CO14-I14-22

ENS 50368 +/-
Where
Colorado State University Fort Collins, Colorado (NRC Region 4)
License number:	CO 002-19
Organization:	Colorado Dept Of Health
Reporting

Agreement State
Time - Person (Reporting Time:+-3.48 h-0.145 days <br />-0.0207 weeks <br />-0.00477 months <br />)
Opened:	James Grice 17:16 Aug 14, 2014
NRC Officer:	Daniel Mills
Last Updated:	Aug 14, 2014
50368 - NRC Website
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v t e Emergency Notification System
Colorado State University with Agreement State
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