The following was received from the State of
California via email:
On July 28, 2016, [the Radiation Safety Officer] RSO at CB&I contacted RHB [Radiologic Health Branch] to report an incident on stolen check sources from their storage location at Hunters Point in San Francisco, CA. Theft occurred in the afternoon of July 26, 2016, between approximately 1330-1400 hours, while CB&I personnel were conducting business in adjacent project trailers. Items stolen included tools, equipment and locked posted radioactive check source safe. No other radioactive materials were stored inside this trailer.
Source description is as follows:
Source Date S/N Activity (uCi)
Th-230 Plate Jul-92 92TH1002842 0.0061
Th-230 Disk Nov-09 G4-791 0.01566
Tc-99 Disk Nov-09 G4-797 0.03111
Tc-99 Plate Nov-09 G4-788 0.01648
Cs-137 Button Jan-16 216 10
Cs-137 Button Aug-91 1065/91 9.9
Co-60 Metal Nut Unknown Unknown 0.624
Note: (only Th-230, 0.01566 uCi exceeds 10X Appendix C value)
CA 5010 Number: 072816
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