The State representative reported that scrap metal received by a metal processor in Sand Springs, OK, set off the facility's gate radiation monitor. Investigation into the alarm determined that the radiation was coming from a foil source of unknown origin. The source dimensions are 3 inches by 1/2 inch with a contact reading (using a Ludlum Model 3) of 200 mR/hr. The scrap metal processor notified the State which dispatched inspectors to the site.
The State found that the source also had loose surface contamination. Investigation has determined that four individuals had handled the source. The State was able to contact one of those individuals and a survey of the individual revealed no indication of contamination. The State has not yet been able to contact the other three people involve in handling the source. The source has been wrapped in lead shielding material and secured in a safe location. The State plans to perform a Gamma Spec analysis of the source to determine the isotope. The investigation into the origin of the source has been unproductive so far. It appears that the scrap metal came from a intermediary scrap metal dealer.
- * * UPDATE ON 10/5/05 @ 15:20 FROM SAMPSON TO ABRAMOVITZ * * *
The source (foil) was determined to be Radium-226. The Curie content was not determined but was estimated to be in the micro Curie range. The loose contamination was not found on any other surfaces, only on the test swipe. The four individuals who contacted this source were contacted and an estimate of their dose is in progress.
Notified R4DO D. Graves.