- (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.
Authorizing statute(s): 75-3-201, MCA
Implementing statute(s): 75-3-201, 75-3-202, 75-3-204, MCA
History: NEW, 1980 MAR p. 1069, Eff. 3/28/80; TRANS, from DHES, 1996 MAR p. 433; TRANS, from DEQ, 2000 MAR p. 189.