APPENDIX F These selected definitions are provided by the State of Kentucky's Radioactive Material Regulations, 902 KAR 100:010, Section 1. The complete section of regulations is available at the Radiation Safety Office. "Annual limit on intake (ALI)" means the derived limit for the amount of radioactive material taken into the body of an adult worker by inhalation or ingestion in a year. ALI is the smaller value of intake of a given radionuclide in a year by the reference man that would result in a committed effective dose equivalent of five (5) rems (0.05 Sv) or a committed dose equivalent of fifty (50) rems (five-tenths (0.5) Sv) to an individual organ or tissue. (ALI values for intake by ingestion and by inhalation of selected radionuclides are given in 902 KAR 100:019, Section 44, Table 1, Columns 1 and 2.) "As low as reasonably achievable (ALARA)" means making every reasonable effort to maintain exposures to radiation as far below the dose limits in 902 KAR 100:019 as practical, consistent with the purpose for which the licensed activity is undertaken. ALARA shall take into account the state of technology, the economics of improvement in relation to benefits to the public health and safety, and other societal and socio-economic considerations, in relation to the utilization of nuclear energy and radioactive materials in the public interest. "Curie" means a quantity of radioactivity. One (1) curie (Ci) is that quantity of radioactive material which decays at the rate of 3.7 x 1010 disintegrations per second (dps). Commonly used submultiples of the curie are the millicurie and the microcurie. One (1) millicurie (mCi) = 0.001 curie = 3.7 x 107 dps. One (1) microcurie (uCi) = 0.000001 curie = 3.7 x 104 dps. "Exposure" means being exposed to ionizing radiation or to radioactive material. "Extremity" means hand, elbow, arm below the elbow, foot, knee, or leg below the knee. "High radiation area" means an area, accessible to individuals, in which radiation levels may result in an individual receiving a dose equivalent in excess of one-tenth (0.1) rem (1 mSv) in one (1) hour at thirty (30) centimeters from the radiation source or from a surface that the radiation penetrates. "Human use" means the internal or external administration of radiation or radioactive materials to human beings. "Misadministration" means the administration of:
"Rad" means the special unit of absorbed dose. One (1) rad equals an absorbed dose of 0.01 joule per kilogram (0.01 gray) or 100 ergs per gram. "Radiation area" means an area, accessible to individuals, in which there exists radiation at levels that an individual may receive in excess of five (5) millirems (0.05 mSv) in one (1) hour at thirty (30) centimeters from the radiation source or from a surface that the radiation penetrates. "Recordable event" means the administration of:
"Rem" means a special unit of quantities expressed as dose equivalent. The dose equivalent in rems is equal to the absorbed dose in rads multiplied by the quality factor (one (1) rem = 0.01 sievert). "Restricted area" means an area access to which is limited by the licensee or registrant for purposes of protection of individuals against undue risks from exposure to radiation and radioactive materials. A restricted area shall not include areas used as residential quarters, although a separate room or rooms in a residential building may be set apart as a restricted area. "Roentgen" means the special unit of exposure. One (1) roentgen ® equals 2.58 x 10-4 coulombs per kilogram of air (see "Exposure"). "Sealed Source" means radioactive material that is permanently bonded or fixed in a capsule or matrix designed to prevent leakage or escape of the radioactive material.
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