§35.61. Calibration of survey instruments.
10 C.F.R. § 35.61
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—
Calibrate all scales with readings up to 10 mSv (1000 mrem) per hour with a radiation source;
Calibrate two separated readings on each scale or decade that will be used to show compliance; and
Conspicuously note on the instrument the date of calibration.
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.
A licensee shall retain a record of each survey instrument calibration in accordance with § 35.2061.
Notes, amendments, and revision history
Authority
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
Source: 67 FR 20370, Apr. 24, 2002, unless otherwise noted.