ARM 37.14.820. EQUIPMENT CONTROL: RADIATION SURVEY INSTRUMENTS

(1) The licensee or registrant shall maintain sufficient calibrated and operable radiation survey instruments to make physical radiation surveys as required by this subchapter and ARM 37.14.720 . Instrumentation required by this rule shall have a range such that 2 milliroentgens per hour through 1 roentgen per hour can be measured. (2) Each radiation survey instrument shall be calibrated: (a) at energies appropriate for use and at intervals not to exceed 3 months and after each instrument servicing; (b) such that accuracy within ± 20% can be demonstrated; and (c) at 2 or more widely separated points, other than zero, on each scale. (3) Records shall be kept of these calibrations for 2 years after the calibration date and maintained for inspection by the department.