To be in compliance with the 2002 requirements, does a licensee have to recalibrate a dose calibrator that was in use prior to October 24, 2002?
Not necessarily. If the dose calibrator was calibrated in compliance with the NRC requirements that were in effect prior to October 24, 2002,* and the licensee has continued to perform calibrations at the frequency specified in the prior rule, the requirements of the present ยง35.60, “Possession, use, and calibration of instruments used to measure the activity of unsealed byproduct material,” would be satisfied, since the prior requirements aligned with ANSI N42.13-1986 (R1993), a current national consensus standard. Section 35.60 requires calibrations to be in accordance with nationally recognized standards or the manufacturers instructions.
