Code of Massachusetts Regulations
105 CMR - DEPARTMENT OF PUBLIC HEALTH
Title 105 CMR 120.000 - The Control of Radiation
SURVEYS AND MONITORING
Section 120.225 - General

Universal Citation: 105 CMR 120.000 MA Code of Regs 120.225

Current through Register 1531, September 27, 2024

(A) Each licensee or registrant shall make, or cause to be made, surveys of areas, including the subsurface, that:

(1) are necessary for the licensee or registrant to comply with 105 CMR 120.200; and

(2) are necessary under the circumstances to evaluate:
(a) the magnitude and extent of radiation levels;

(b) concentrations or quantities of radioactive material residual radioactivity; and

(c) the potential radiological hazards of the radiation levels and residual radioactivity detected.

(B) Notwithstanding the provisions in 105 CMR 120.263(A), records from surveys describing the location and amount of subsurface residual radioactivity identified at the site must be kept with records important for decommissioning, and such records must be retained in accordance with 105 CMR 120.125(C)(8), as applicable.

(C) The licensee or registrant shall ensure that instruments and equipment used for quantitative radiation measurements, for example, dose rate and effluent monitoring, are calibrated at intervals not to exceed 12 months for the radiation measured except when a more frequent interval is specified in another applicable section of 105 CMR 120.000 or license condition.

(D) All personnel dosimeters, except for direct and indirect reading pocket ionization chambers and those dosimeters used to measure the dose to any extremity, that require processing to determine the radiation dose and that are used by licensees and registrants to comply with 105 CMR 120.211, with other applicable provisions of 105 CMR 120.000, or with conditions specified in a license or certificate of registration, shall be processed and evaluated by a dosimetry processor:

(1) holding current personnel dosimetry accreditation from the National Voluntary Laboratory Accreditation Program (NVLAP) of the National Institute of Standards and Technology; and

(2) approved in this accreditation process for the type of radiation or radiations included in the NVLAP program that most closely approximates the type of radiation or radiations for which the individual wearing the dosimeter is monitored.

(E) The licensee or registrant shall ensure that adequate precautions are taken to prevent a deceptive exposure of an individual monitoring device.

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