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| Entered date | Event description | |
|---|---|---|
| ENS 51408 | 18 September 2015 15:34:00 | When requested by the NRC, the licensee was unable to locate a 15 mCi Ni-63 source. The source was used in a Perkin-Elmer gas chromatograph electron capture detector. The licensee noted that the device may have been decommissioned, but a fire at their facility effectively destroyed all records that could be used to located the source. 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 |