Definitions

As used in 105 CMR 120.000, these terms have the definitions set forth in 105 CMR 120.005. Additional definitions used only in a certain Section will be found in that Section. 105 CMR 120.000 means all Sections of the Massachusetts Regulations for the Control of Radiation. Absorbed Dose means the energy imparted by ionizing radiation per unit mass of irradiated material. The units of absorbed dose are the gray (Gy) and the rad. Accelerator means any machine capable of accelerating electrons, protons, deuterons, or other charged particles in a vacuum and of discharging the resultant particulate or other radiation into a medium at energies usually in excess of 1 MeV. For purposes of Accelerator, "particle accelerator" is an equivalent term. Accelerator-produced Material means any material made radioactive by a particle accelerator. Activity means the rate of disintegration or transformation or decay of radioactive material. The units of activity are the becquerel (Bq) and the curie (Ci). Adult means an individual 18 years of age or older. Agency means the Radiation Control Program of the Massachusetts Department of Public Health. Agreement State means any State with which the U.S. Nuclear Regulatory Commission or the U.S. Atomic Energy Commission has entered into an effective agreement under § 274b of the Atomic Energy Act of 1954, as amended (St. 1973, c. 689). Airborne Radioactive Material means any radioactive material dispersed in the air in the form of dusts, fumes, particulates, mists, vapors, or gases. Airborne Radioactivity Area means a room, enclosure, or area in which airborne radioactive materials exist in concentrations: (a) In excess of the derived air concentrations (DACs) specified in 105 CMR