On 6/20/07, a previously manufactured electron capture detector was returned to the New Castle,
DE facility because it was not able to reach its final shipment destination. The detector was stored in an area for returned shipments containing radioactive materials. On 9/27/07 the licensee attempted to locate the device for proper dispositioning but could not find it. The licensee ensured that employees knew the description and labeling of the box. The licensee then conducted a search of the entire building but was unable to locate the device.
The device contained a 15 millicurie Ni-63 source.
As part of their corrective actions the licensee ensured that the employees were trained in their responsibilities concerning this type of material. In the future the licensee plans to increase the frequency of periodic training.
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.