OAR 333-116-0170
Calibration and Check of Survey Instrument
(1)
A licensee must ensure that the survey instruments used to show compliance with OAR chapter 333, divisions 116 and 120 have been calibrated before first use, annually and following repair.(2)
To satisfy the requirements of section (1) of this rule the licensee must:(a)
Calibrate all required scale readings up to 10 millisieverts (1000 mrem) per hour with a radiation source;(b)
For each scale that must be calibrated, calibrate two readings separated by at least 50 percent of scale reading; and(c)
Conspicuously note on the instrument the date of calibration.(3)
To satisfy the requirements of section (2) of this rule, the licensee must:(a)
Consider a point as calibrated if the indicated exposure rate differs from the calculated exposure rate by not more than 10 percent; and(b)
Consider a point as calibrated if the indicated exposure rate differs from the calculated exposure rate by not more than 20 percent if a correction chart or graph is conspicuously attached to the instrument.(4)
A licensee must check each survey instrument for proper operation with the dedicated check source before each use. (5) The licensee must retain a record of each calibration required in section (1) of this rule in accordance with OAR 333-100-0057 (Maintenance of Records). The record must include:(a)
A description of the calibration procedure; and(b)
A description of the source used and the certified exposure 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.(6)
To meet the requirements of sections (1), (2) and (3) of this rule, the licensee may obtain the services of individuals licensed by the Authority, the U.S. Nuclear Regulatory Commission, an Agreement State or a Licensing State to perform calibrations of survey instruments. Records of calibrations which contain information required by section (5) of this rule must be maintained by the licensee calibration in accordance with OAR 333-100-0057 (Maintenance of Records).
Source:
Rule 333-116-0170 — Calibration and Check of Survey Instrument, https://secure.sos.state.or.us/oard/view.action?ruleNumber=333-116-0170
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