410 IAC 5-10.1-8 Survey instruments

Sec. 8. (a) The licensee or registrant shall maintain sufficient calibrated and operable radiation survey instruments at each field station to make physical radiation surveys as required by this part and by 410 IAC 5-4-9. Instrumentation shall be capable of measuring 0.1 milliroentgen per hour through at least 20 milliroentgens per hour. (b) Each radiation survey instrument shall be calibrated: (1) At intervals not to exceed 6 months and after each instrument servicing; (2) At energies and radiation levels appropriate for use; and (3) So that accuracy within plus or minus 20 percent of the true radiation level can be demonstrated on each scale. (c) Calibration records shall be maintained for a period of 2 years for inspection by the board.