Question 209: (a) Does the revised Part 20 require that
meters be calibrated? (b) If so, is the calibration
frequency specified?
Answer: (a) Yes, 10 CFR 20.1501 (b) requires that the
licensee insure that instruments and equipment used for
quantitative radiation measurements are calibrated
periodically for the radiation measured.
(b) Part 20 regulations do not define "periodically."
However, specific NRC license conditions and other Parts of
Title 10 (i.e., Parts 34 and 35) may specify the
periodicity for calibration. (Reference: 10 CFR 20.1501)