A load of scrap metal was returned by the recycler to the originator (Ulbrich Stainless Steels and Special Metals, Inc.) after their radiation detector alarmed on the load of metal. After arriving back at Ulbrich, the load was checked and a Dickey-John Dewpointer instrument containing a 7 microCurie
Radium-226 source was found.
The Dewpointer instrument is believed to have been purchased by Ulbrich more than 20 years ago. The Dewpointer instrument had no stickers or warning labels indicating that it contained a radioactive source. The Dewpointer instrument had been surplused and tossed in the trash.
The Dewpointer instrument is currently in the possession of Radiation Safety Associates, Inc. (license number: 06-30007-01). Ulbrich has taken responsibility for assuring proper disposal of the instrument.
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