The employer shall ensure that each affected employee uses appropriate eye or
face protection when exposed to eye or face hazards from flying particles,
molten metal, liquid chemicals, acids or caustic liquids, chemical gases or
vapors, or potentially injurious light radiation.... The employer shall ensure
that each affected employee uses eye protection that provides side protection
when there is a hazard from flying objects. Detachable side protectors (e.g.
clip-on or slide-on side shields) meeting the pertinent requirements of this
section are acceptable.... The employer shall ensure that each affected employee
who wears prescription lenses while engaged in operations that involve eye
hazards wears eye protection that incorporates the prescription in its design,
or wears eye protection that can be worn over the prescription lenses without
disturbing the proper position of the prescription lenses or the protective
lenses.... Eye and face PPE shall be distinctly marked to facilitate
identification of the manufacturer.... The employer shall ensure that each
affected employee uses equipment with filter lenses that have a shade number
appropriate for the work being performed for protection from injurious light
radiation. As a rule of thumb, start with.a shade that is too dark to see the
weld zone. Then go to a lighter shade which gives sufficient view of the weld
zone without going below the minimum. Shade values apply where the actual arc is
clearly seen. Experience has shown that lighter filters may be used when the arc
is hidden by the workpiece.... Protective eye and face devices purchased after
July 5, 1994 shall comply with ANSI Z87.1-1989, "American National Standard
Practice for Occupational and Educational Eye and Face Protection."