The following is a summary of the information provided by the
Colorado Department of Health (the Department) via email:
On September 8, 2023, six exit signs were removed by a construction company and taken to an unknown location. The Carbondale Community School representative reported that they may have been taken to a landfill. The signs were manufactured by Self Powered Lighting, Inc., model number 700 Series (7.1 Ci of H-3 each).
Event Report ID No.: CO230039
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