Section 325.5005. Definitions B.

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Rule 5. (1) "Barrier" includes a primary protective barrier, a secondary protective barrier or a personnel barrier.

(2)     "Beam axis" means a line from the source through the centers of the x-ray or gamma-ray fields.

(3)          "Beam-limiting device" means a device which provides a means to restrict the dimensions of the x-ray or gamma-ray field.

(4)       "Byproduct material" means any radioactive material, except special nuclear material, yielded in or made radioactive by exposing it to the radiation incident to the process of producing or utilizing special nuclear material.

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

                    
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