Environmental Engineering Reference
In-Depth Information
FIgure 25.2
Rigging.sling.attached.to.crane's.hook.
devices.for.a.compressed.air.system.should.be.checked.frequently..Compressors.
should.be.equipped.with.pressure.relief.valves.and.pressure.gauges..The.air.intakes.
must.be.installed.and.equipped.so.as.to.ensure.that.only.clean,.uncontaminated.air.
enters.the.compressor..Air.ilters.installed.on.the.compressor.intake.facilitate.this..
Before.any.repair.work.is.done.on.the.pressure.system.of.a.compressor,.the.pres-
sure.must.be.bled.off.and.the.system.locked.out..All.compressors.must.be.operated.
and.lubricated.in.accordance.with.the.manufacturer's.recommendations..Signs.are.
to. be. posted. to. warn. of. the. automatic. starting. feature. of. compressors.. The. belt.
drive.system.must.be.totally.enclosed.to.provide.protection.from.any.contact.
No.worker.should.direct.compressed.air.toward.another.person,.and.employees.are.
prohibited.from.using.highly.compressed.air.for.cleaning.purposes..If.compressed.air.
is.used.for.cleaning.off.clothing,.the.pressure.must.be.reduced.to.less.than.10 pounds.
per.square.inch.(psi)..When.using.compressed.air.for.cleaning,.employees.must.wear.
protective.chip.guarding.eyewear.and.personal.protective.equipment.
Safety. chains. or. other. suitable. locking. devices. must. be. used. at. couplings. of.
high-pressure.hose.lines.where.a.connection.failure.would.create.a.hazard..Before.
