ENS 55464

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v t e ENS Event
07:00 Aug 13, 2021
Title	Missing Radioactive Sources
Event Description	The following is summary of information received from the state of Washington via email: On August 13, 2021, the University of Washington Radiation Safety concluded that it was unable to locate two Gd-148 sources with activity totaling 0.0882 microCi and one Am-241 source with activity 0.982 microCi. Internal radiation exposure to these sources is highly unlikely, and any external exposure to the sources would not be considered a public health and safety concern. It is probable that the sources are still in the facility, but since they cannot be located they are considered missing. The root cause of the problem is a lack of documentation of source use and storage locations. Corrective actions were taken by Radiation Safety to prevent future loss of material. WA incident no.: WA-21-021 THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

ENS 55464 +/-
Where
University Of Washington Environmental Health And Safety Seattle, Washington (NRC Region 4)
License number:	C001
Organization:	Wa Office Of Radiation Protection
Reporting

Agreement State
Time - Person (Reporting Time:+799.32 h33.305 days <br />4.758 weeks <br />1.095 months <br />)
Opened:	Tristan Hay 14:19 Sep 15, 2021
NRC Officer:	Brian Lin
Last Updated:	Sep 15, 2021
55464 - NRC Website
v • d • e

v t e Emergency Notification System
University Of Washington Environmental Health And Safety with Agreement State
WEEKMONTHYEAR2021-08-13T07:00:00 [Table view]
[ENS list for University Of Washington Environmental Health And Safety]

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