Section 325.5004. Definitions Al to Au.

(1) "Aluminum equivalent" means the thickness of type 1100 aluminum alloy with nominal chemical composition of 99.00% minimum aluminum and 0.12% copper which will provide the same attenuation, under specified conditions, as the material in question.

(2)         "Atomic Energy Commission" or "AEC" means the United States atomic energy commission, which was abolished by Section 104 of the federal energy reorganization act of 1974, being Public Law 93-438. See nuclear regulatory commission.

(3)       "Attenuation block" means a block or stack, having dimensions 20 centimeters by 20 centimeters by 3.8 centimeters, of type 1100 aluminum alloy or other material with the same aluminum equivalent.

(4)     "Authorized recipient" means any person licensed or otherwise authorized in writing by the department, the federal government or any agency thereof, or an agreement state to possess radioactive material or as authorized to the extent permitted by exemption from these rules.

(5)      "Automatic exposure control" means a device which automatically controls 1 or more technique factors in order to obtain at a preselected location a required quantity of radiation.

History: 1954 ACS 85, Eff. Dec. 3, 1975; 1954 ACS 98 Eff. Mar 9, 1979.