The following was received via email:
At 6:15 PM, on 12/28/09, the Nevada Radiation Control Program (RCP) received a phone call from NHP [Nevada Highway Patrol] and was informed that a nuclear density gauge [model CPN MC3 Am-241/Be 50 mCi and Cs-137 10 mCi nominal] had fallen out of a truck in Las Vegas and that the gauge had been destroyed.
At 6:35 PM, NHP, Las Vegas, contacted [the Nevada RCP Senior RSO] and reported that a nuclear density gauge had fallen from a truck at I-15 and 215 and that his initial instrument reading was 415 micro R/hr at 10 feet. The instrument was destroyed; however the source tube was not ruptured. The NHP was also on the line with [RCP] who was arranging for Metro All Regional Multi-Agency Operations and Response (ARMOR) to respond with other instruments. [The RCP] coordinated from that point with subsequent calls to [the Nevada RCP Senior RSO] to discuss how to proceed. The subsequent instrument readings received from Metro ARMOR indicated that the surface of the device case was 600 mR/hr.
On the morning of 12/29/09, RCP learned that Instrotek was on the way to the licensee to conduct wipe tests and determine if the gauge could be shipped for repair.
RCP also took measurements on December 29, 2009 with a calibrated Victoreen 451 P. The measurements were 70 mR/hr at contact with the outside of the shipping container that held the gauge pieces. It was indicated that the licensee was to call the program [State] on 12/29/09 to report the incident. As of this writing the program is awaiting contact from the licensee.
The state has an inspector in the area, and will continue to keep the NRC informed of the status of our investigation.
The RCP stated that both sources were recovered, intact, and leak tested satisfactory.
Nevada Event #: NV-01-001