"Contaminant" means any material which by reason of its action upon, within, or to a person is likely
to cause physical harm.
"Lanyard" means a rope, suitable for supporting one person. One end is fastened to a safety belt or
harness and the other end is secured to a substantial object or a safety line.
"Lifeline" means a rope, suitable for supporting one person, to which a lanyard or safety belt (or
harness) is attached.
"O.D." means optical density and refers to the light refractive characteristics of a lens.
"Radiant energy" means energy that travels outward in all directions from its sources.
"Safetybelt" means a device, usually worn around the waist which, by reason of its attachment to a
lanyard and lifeline or a structure, will prevent a worker from falling.
[59 FR 40729, Aug. 9, 1994; 60 FR 5131, Jan. 26, 1995; 60 FR 39254, Aug. 2, 1995]