Code of Colorado Regulations
1000 - Department of Public Health and Environment
1007 - Hazardous Materials and Waste Management Division
6 CCR 1007-1 - RULES AND REGULATIONS PERTAINING TO THE ADMINISTRATION AND ENFORCEMENT OF THE PESTICIDE APPLICATORS' ACT
Part 24 - RADIATION CONTROL - PARTICLE ACCELERATORS AND THERAPEUTIC RADIATION MACHINES IN THE HEALING ARTS
SPECIFIC REQUIREMENTS
Section 6 CCR 1007-1-24.12 - Calibration of Survey Instruments

Universal Citation: 1000 CO Code Regs 6 CCR 1007-1-24.12

Current through Register Vol. 48, No. 6, March 25, 2025

24.12.1 The registrant shall ensure that the survey instruments used to show compliance with this part have been calibrated before first use, at intervals not to exceed twenty-four (24) months, and following repair.

24.12.2 To satisfy the requirements of 24.12.1, the registrant shall:

24.12.2.1 Calibrate all required scale readings up to 10 mSv (1000 mrem) per hour with an appropriate radiation source that is traceable to the National Institute of Standards and Technology (NIST); and

24.12.2.2 Calibrate at least two (2) points, at approximately 1/3 and 2/3 of full-scale, on each scale to be calibrated; and

24.12.3 To satisfy the requirements of 24.12.2, the registrant shall:

24.12.3.1 Consider a point as calibrated if the indicated dose rate differs from the calculated dose rate by not more than ten (10) percent; or

24.12.3.2 Consider a point as calibrated if the indicated dose rate differs from the calculated dose rate by not more than twenty (20) percent if a correction factor or graph is conspicuously attached to the instrument.

24.12.4 The registrant may obtain the services of individuals licensed by the Department, NRC, an Agreement State, or a Licensing State to perform calibrations of survey instruments.

24.12.5 The registrant shall retain a record of each calibration required in 24.12.1 for three (3) years. The record shall include:

24.12.5.1 A description of the calibration procedure;

24.12.5.2 A description of the source used;

24.12.5.3 The certified dose rates from the source;

24.12.5.4 The rates indicated by the instrument being calibrated;

24.12.5.5 The correction factors deduced from the calibration data;

24.12.5.6 The signature of the individual who performed the calibration; and

24.12.5.7 The date of calibration.

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