R 325.5003 Definitions; Ab to Ai.

Rule 3. (1) "Absorbed dose" means the energy imparted to matter by radiation per unit mass of irradiated material at the place of interest. The special unit of absorbed dose is the rad. (2) "Accelerator" or "particle accelerator" means a radiation machine designed for or capable of accelerating electrically charged particles such as electrons, protons, or deuterons with an electrical potential in excess of 1 MeV. Radiation machines designed and used exclusively for the production of electron beams or x-radiation for any of the following purposes, except those capable of producing radioactive material in excess of exempt quantities listed in schedule B of Rule 147, are excluded from this definition: (a) The diagnosis or treatment of patients. (b) Industrial radiography. (c) Examination of the microscopic structure of materials. (d) Manufacturing process control. (e) Research and development. (f) Demonstration of scientific principles for educational purposes. (3) "Accelerator material" means any material made radioactive by exposing it in a particle accelerator. (4) "Act" means 1978 PA 368, MCL 333.1101 to 333.25211. The terms defined in the act have the same meanings when used in these rules. (5) "Agreement material" means "byproduct material", "source material", or "special nuclear material in quantities not sufficient to form a critical mass" which is subject to regulation by this state under an agreement between the NRC and this state pursuant to section 274 of the federal atomic energy act of 1954, as amended, being 42 U.S.C. 2011 to 2297H-13. (6) "Agreement state" means a state with which the NRC has entered into an effective agreement pursuant to section 274b of the atomic energy act of 1954, 42 U.S.C. 2011 to 2297H-13. (7) "Airborne radioactive material" means any radioactive material dispersed in the air in the form of dusts, fumes, mists, vapors, or gases. (8) "Airborne radioactivity area" means a room, enclosure, or operating area in which airborne radioactive material exists in concentrations in excess of the amounts specified in column 1, table I of Rules 261 to 269 or a room, enclosure, or operating area in which airborne radioactive material exists in concentrations which, averaged over the number of hours in any week during which individuals are in the area, exceed 25% of the amounts specified in column 1, table I of Rules 261 to 269.