The following was received from the
California Department of Public Health, Radiologic Health Branch (
RHB) via email:
On Wednesday, March 8, 2023, at approximately 1000 PST, the Radiation Safety Officer (RSO) of Converse Consultants, Inc. (Redlands), radioactive materials license number 8057-36, contacted the RHB Brea office concerning a Troxler moisture/density gauge (Cs-137 0.296 giga-becquerels (8 millicuries), Am-241 1.48 giga-becquerels (40 millicuries)) that had been damaged when driven over by a vehicle at a construction site in Moreno Valley, CA. The gauge handle was in the shielded position when the gauge was struck and was bent during the incident. The area was cleared until the gauge was surveyed by the RSO and Assistant RSO to assess if the Cs-137 source was still in the lead shielding. The survey by the licensee confirmed the source remained in the shielded position based on exposure rate levels being in the normal range for a shielded source. The locking mechanism on the source rod is not functional. Due to the extent of damage to the gauge, the gauge was then taken to Maurer Technical Services, LLC., radioactive materials license number 6163-30 for leak test analysis and disposition.
A copy of the incident report from the authorized user of Converse Consultants will be forwarded to the RHB Brea office and will be included as part of this investigation.
California NMED Number: 030823