Mississippi Administrative Code › Title 15 - Mississippi Department of Health › Part 21 - Division of Radiological Health › Subpart 78 - Radiological Health › Chapter 1 - REGULATIONS FOR CONTROL OF RADIATION IN MISSISSIPPI › Subchapter 1 - General Provisions › Rule 15-21-78-1.1.2 - Definitions

Current through June 25, 2024
As used in these regulations, these terms have the
						definitions set forth below. Additional definitions used only in a certain
						section will be found in that section.
1. "A1" means the maximum activity of special
					 form radioactive material permitted in a Type A package. "A2" means the maximum
					 activity of radioactive material, other than special form, LSA and SCO
					 material, permitted in a Type A package. These values are either listed in
					 Appendix A, Table A-1 of Subchapter 13 of these regulations or may be derived
					 in accordance with the procedure prescribed in Appendix A of Subchapter 13 of
					 these regulations.
2. "Absorbed
					 dose" means the energy imparted to matter by ionizing radiation per unit mass
					 of irradiated material at the place of interest. The units of absorbed dose are
					 the rad and the gray (Gy).
3.
					 "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 this definition, "particle accelerator" is an
					 equivalent term.
4.
					 "Accelerator-produced radioactive material" means any material made radioactive
					 by a particle accelerator.
5.
					 "Acute" as used in this part, means a single radiation dose or multiple
					 radiation dose occurring within a short time (24 hours or less).
6. "Act" means the Mississippi Radiation
					 Protection Law of 1976.
7.
					 "Activity" means the rate of disintegration (transformation) or decay of
					 radioactive material. The units of activity are the curie (Ci) and the
					 becquerel (Bq).
8. "Adult" means an
					 individual 18 or more years of age.
9. "Agency" means the Mississippi State
					 Department of Health.
10.
					 "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 Subchapter 274b. of the Atomic Energy Act of 1954, as amended
					 (73 Stat. 689).
11. "Airborne
					 radioactive material" means any radioactive material dispersed in the air in
					 the form of dusts, fumes, particulates, mists, vapors, or gases.
12. "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 Subchapter 4 (10 CFR Part 20, Appendix
					 B, Table 1) of these regulations; or
b. to such a degree that an individual
					 present in the area without respiratory protective equipment could exceed,
					 during the hours an individual is present in a week, an intake of 0.6 percent
					 of the annual limit on intake (ALI) or 12 DAC- hours.