At approximately 1430 EDT on 05/13/04, an equipment operator backed a truck over a
CPN moisture density gauge model
MC1DRP, Serial No. MD30506972, containing an 10 milliCurie
Cs-137 and a 50 milliCurie Am-241:Be source. The exterior cover of the
gauge was damaged, the source rod was stuck in the shielded position at the time the incident occurred. The top shield was broken off. The technician removed personnel from the area and contacted the company headquarters who contacted the manufacturer. The technician placed the
gauge in a five gallon bucket filled with gravel. The bucket and
gauge are locked in a truck for transportation to the home office in Fredericksburg,
VA. Radiation measurement before the
gauge was placed in the bucket was 2 millirem per hour at five feet. Radiation measurement after the
gauge was placed in the bucket was 0.6 millirem per hour at one meter. The ground where the accident occurred was also surveyed at a slow pace at a distance of 1 inch, and no reading was recorded other than background radiation. The licensee will conduct a leak test of the
gauge when the
gauge reaches Fredericksburg,
VA. They plan to ship the
gauge to the manufacturer.