Related to visible radiation

Plasma arc incinerator means any enclosed device using a high intensity electrical discharge or arc as a source of heat followed by an afterburner using controlled flame combustion and which is not listed as an industrial furnace.
Stray radiation means the sum of leakage and scattered radiation.
Combustible material means combustible refuse, combustible waste or any other material capable of igniting;
Low-level radioactive waste or “waste” means radioactive waste that is not classified as high-level radioactive waste and that is Class A, B, or C low-level radioactive waste as defined in 10 C.F.R. §61.55, as that section existed on January 26, 1983. “Low-level radioactive waste” or “waste” does not include any such radioactive waste that is owned or generated by the United States department of energy; by the United States navy as a result of the decommissioning of its vessels; or as a result of research, development, testing, or production of an atomic weapon.
Airborne radioactivity area means a room, enclosure, or area in which airborne radioactive materials, composed wholly or partly of licensed material, exist in concentrations:

visible radiation definition