The following was received from the state of
Nebraska via email:
DHHS [Nebraska Department of Health and Human Services] - Office of Radiological Health received written notification on 5/29/18 from GL0604 - Mary Our Queen Kenny Center indicating a lost/not found tritium exit sign during their Annual Renewal. Licensee initially telephoned DHHS on 5/10/18 to indicate they could not locate the device at the listed location and would be checking additional buildings. Licensee checked several additional buildings on their campus and contacted the electrician used during recent (2016) renovation in an effort to locate the device. Licensee believes the device was removed either during a prior renovation or due to regular maintenance and repair but cannot verify due to staffing changes.
Source/radioactive material: Sealed Source Luminous
Manufacturer: Safety Light Corp.
Model number: 880-12-6-10
Serial number: A21170
Radionuclide: H-3
Activity: 7.5 Ci (277.5 GBq)
Nebraska Item Number: NE180005
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