Event Notification Report for April 11, 2008

AGREEMENT STATE REPORT - MISSING STRONTIUM-90 BETA APPLICATOR

The State of Texas reported that a 55 milliCuries strontium-90 beta applicator, Amersham Model SIA.20, is currently missing. The device was formally used at a cancer treatment facility in Plano, Texas, which has since filed for bankruptcy protection. The device was not returned to the authorized user upon sale of the property. The state believes the device is locked and stored in the building and is attempting to gain access through the bankruptcy trustee. The state is investigating and will provide further details at a later date.

* * * UPDATE FROM RAY JISHA TO JOE O'HARA AT 1730 0N 4/11/08 * * *

The State of Texas has inspected the business and accounted for the missing beta applicator. Additionally, they have discovered some other nuclear source material. The state has served an impoundment order on the business and has secured all of the sources in the building pending additional investigation and follow-up.

Texas Incident No. I-8500

Notified R4DO(Deese) and FSME(Kock).

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.

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

LOST C-14 SOURCES

While conducting the annual physical inventory of radioactive materials on 04/11/08, 2 samples containing a total of 10.1 milliCuries of C-14 were not able to be located. The samples were: (1) RMR 631- Methylene Bisphenyl Isocyanate (MDI) 1.1 mCi of C-14, and (2) RMR 652 - Dipropylene glycol dimethyl ether, 9.0 mCi of C-14. The samples had been present in their approved storage location during the 2007 physical inventory.

All authorized users were interviewed to identify location or usage within the last year. A detailed search of all storage areas and radioisotope-approved labs was performed. Conducted a review of facility waste disposal records, and no information related to the sources location was found.

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.

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.