The
Wisconsin Radiation Protection Section was notified of a fire involving radioactive materials on February 19, 2004 at 23:45. The item was a
NDC Model 104P Portable Mass
Gauge containing 25 millicuries of
Am-241.
Members from the Wisconsin Radiation Protection Section responded to the location of the fire in Wisconsin Rapids on Friday, February 20, 2004. Wisconsin Rapids Police Department controlled access to the scene and allowed no one to enter until personnel arrived from the Radiation Protection Section.
A survey was performed at the location using sodium iodide detectors. The gauge was located under 3 to 4 inches of fire debris. The gauge was emitting 30 millirem/hour on contact with the source opening. Wipe test of the gauge and surveys of the surrounding area confirmed the source was intact. The gauge was damaged severely by the fire.
Initial investigation into the fire by the Wisconsin Rapids Police Department indicated that the fire was set by two to three individuals to cover up an apparent robbery at the residence. These individuals have been apprehended.
The licensee used the
gauge at temporary job sites in
Wisconsin to measure drainage profiles on paper lines at paper mills.