The following information was received by facsimile:
A biannual tritium sign inspection during the week of 5/7/2012 disclosed four tritium signs had been removed during a renovation of Mendocine Hall during the third week of January 2012 by the contractor. All attempts to locate the signs have been exhausted.
The missing signs are as follows:
Serial # 263374 Model # BX1711OWHSGN 7.5 curies
Serial # 263373 Model # BX1711OWHSGN 7.5 curies
Serial # 263387 Model # BX1711OWHSGN 7.5 curies
Serial # 263388 Model # BX1711OWHSGN 7.5 curies
Date of manufacture for all signs is 5/2/2004.
California 5010 Number: 060712
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
This source is not amongst those sources or devices identified by the
IAEA Code of Conduct for the Safety & Security of Radioactive Sources to be of concern from a radiological standpoint. Therefore is it being categorized as a less than Category 3 source