According to part 4731.4170, a licensee must maintain records of:
direct reading dosimeter readings and yearly operability checks according to part 4731.4170, subparts 2 and 3, for three years after the record is made;
alarming ratemeter calibrations for three years after the record is made;
personnel dosimeter results received from the accredited NVLAP processor until the commissioner terminates the license; and
estimates of exposures as a result of off-scale personal direct reading dosimeters or lost or damaged personnel dosimeters until the commissioner terminates the license.
29 SR 755
March 12, 2009