(a) A licensee shall calibrate the survey instruments used to show compliance with this part and 10 CFR Part 20 before first use, annually, and following a repair that affects the calibration. A licensee shall—
(1) Calibrate all scales with readings up to 10 mSv (1000 mrem) per hour with a radiation source;
(2) Calibrate two separated readings on each scale or decade that will be used to show compliance; and
(3) Conspicuously note on the instrument the date of calibration.
(b) A licensee may not use survey instruments if the difference between the indicated exposure rate and the calculated exposure rate is more than 20 percent.
(c) A licensee shall retain a record of each survey instrument calibration in accordance with § 35.2061.
authority: Atomic Energy Act of 1954, secs. 81, 161, 181, 182, 183, 223, 234, 274 (
42 U.S.C. 2111,
2201,
2231,
2232,
2233,
2273,
2282,
2021; Energy Reorganization Act of 1974, secs. 201, 206 (
42 U.S.C. 5841,
5846;
44 U.S.C. 3504 note
source: 67 FR 20370, Apr. 24, 2002, unless otherwise noted.
cite as: 10 CFR 35.61