HAR §11-45-240. Calibration and check of survey instruments

(a) The licensee shall ensure that the survey instruments used to show compliance with this subchapter have been calibrated before first use, at intervals not to exceed twelve months, and following repair. (b) To satisfy the requirements of subsection (a), the licensee shall: (1) Calibrate all required scale readings up to one thousand millirems (ten millisieverts) per hour with an appropriate radiation source; (2) Calibrate at least two points on each scale to be §11-45-241 45-191 calibrated. These points should be at approximately one-third and two-thirds of scale rating. (c) To satisfy the requirements of subsection (b), the licensee shall: (1) Consider a point as calibrated if the indicated dose rate differs from the calculated dose rate by not more than ten percent; and (2) Consider a point as calibrated if the indicated dose rate differs from the calculated dose rate by not more than twenty percent if a correction factor or graph is conspicuously attached to the instrument. (d) The licensee shall retain a record of each calibration required in subsection (a). The record shall include: (1) A description of the calibration procedure; and (2) A description of the source used and the certified dose rates from the source, and the rates indicated by the instrument being calibrated, the correction factors deduced from the calibration data, the signature of the individual who performed the calibration, and the date of calibration. (e) The licensee may obtain the services of individuals licensed to perform calibrations of survey instruments. Records of calibrations which contain information required by subsection (d) shall be maintained by the licensee. [Eff 11/12/99] (Auth: HRS §§321-10, 321-11, 321-71) (Imp: HRS §§321-1, 321-11(21), 321-71)