Environmental Engineering Reference
In-Depth Information
Handle
Guard
Anti-Kickback
Device
Blade
FIgure 25.19
A.self-adjusting.guard.for.the.blade.of.a.radial.saw.
As.a.part.of.safeguarding,.a.power.shut-off.switch.should.be.within.reach.of.the.
operator's.position.at.each.machine,.and.the.electric.power.to.each.machine.must.be.
locked. out. for. maintenance,. repair,. or. security.. Noncurrent-carrying. metal. parts. of.
electrically.operated.machines.must.be.bonded.and.grounded..Foot-operated.switches.
must.be.guarded.or.arranged.in.order.to.prevent.accidental.actuation.by.personnel.or.
falling.objects..Any.manually.operated.valves.and.switches.controlling.the.operation.of.
equipment.and.machines.must.be.clearly.identiied.and.readily.accessible..Provisions.
must.exist.to.prevent.machines.from.automatically.starting.when.power.is.restored.
after.a.power.failure.or.shutdown..All.emergency.stop.buttons.shall.be.colored.red.
All.exposed.moving.chains.and.gears.must.be.properly.guarded..All.pulleys.and.
belts.that.are.within.7.feet.of.the.loor.or.working.level.must.be.properly.guarded..
Fan.blades.must.be.protected.with.a.guard.having.openings.no.larger.than. 1 / 2 .inch.
when.operating.within.7.feet.of.the.loor.
Splash. guards. should. be. mounted. on. machines. that. use. coolant. to. prevent. the.
coolant. from. reaching. employees.. Revolving. drums,. barrels,. and. containers. must.
be. guarded. by. an. enclosure. that. is. interlocked. with. the. drive. mechanism,. so. that.
revolution. cannot. occur. unless. the. guard. enclosures. are. in. place,. and. so. guarded..
Machine. guarding. is. an. integral. part. of. machine. safety. and. should. be. addressed.
without..question.based.upon.the.number.of.injuries.that.transpire.
mAchInery, FIxed (29 cFr 1910.212)
See .machine.guarding.
mAterIAl hAndlIng (29 cFr 1910.176)
Some.form.of.material.handling.transpires.in.almost.all.workplaces..Material.han-
dling.is.one.of.the.leading.causes.of.occupational.injuries,.whether.it.is.manual.lift-
ing.or.the.use.of.lifting.equipment..Great.care.must.be.taken.to.ensure.safe.clearance.
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