Environmental Engineering Reference
In-Depth Information
spring-loaded.safety.valves..All.safety.valves.must.be.tested.frequently.and.at.regu-
lar.intervals.to.determine.whether.they.are.in.good.operating.condition..The.total.
relieving.capacity.of.the.safety.valve.must.be.capable.of.preventing.pressure.in.the.
receiver.from.exceeding.the.maximum.allowable.working.pressure.of.the.receiver.
by.more.than.10.percent.
Every. air. receiver. must. be. provided. with. a. drainpipe. and. valve. at. the. lowest.
point. for. the. removal. of. accumulated. oil. and. water.. Compressed. air. receivers. are.
to.be.periodically.drained.of.moisture.and.oil..The.inlet.of.air.receivers.and.piping.
.systems.must.be.kept.free.of.accumulated.oil.and.carbonaceous.materials.
AIsles And PAssAgeWAys (29 cFr 1910.17, 1910.22, And 1910.176)
Aisles.and.passageways.must.be.free.from.debris.and.kept.clear.for.travel..Where.
mechanical. material. handling. equipment. is. used,. suficient. safe. clearance. must.
be. allowed. for. aisles,. at. loading. docks,. through. doorways,. and. wherever. turns. or.
.passage. must. be. made.. Aisles. and. passageways. used. by. mechanical. equipment.
shall.be.kept.clear.and.in.good.repair.with.no.obstructions.across.or.in.aisles.that.
could.create..hazards..All.permanent.aisles.and.passageways.should.be.appropriately.
marked..Areas.where.workers.are.walking.should.be.covered.or.guardrails.should.be.
provided.to.protect.workers.from.the.hazards.of.open.pits,.tanks,.vats,.ditches,.etc.
Belt sAndIng mAchInes (29 cFr 1910.213)
Belt.sanding.machines.used.for.woodworking.must.be.provided.with.guards.at.each.
nip.point.where.the.sanding.belt.runs.onto.a.pulley,.and.the.unused.run.of.the.sand-
ing.belt.must.be.shielded.to.prevent.accidental.contact.
chAIns, cABles, roPes, And hooks
(29 cFr 1910.179 And 1910.180)
Rigging.apparati.used.for.lifting.and.material.handling,.such.as.hooks,.wire.rope,.and.
chains,.must.be.visually.inspected.daily.and.monthly.with.a.full,.written,.dated,.and.
signed.report.of.the.condition.and.kept.in.a.ile.and.readily.available.to.designated.
personnel.(see.Figure 25.2).
Hoist.ropes.on.crawler,.locomotive,.and.truck.cranes.must.be.free.from.kinks.or.
twists.and.should.be.never.wrapped.around.the.load.
U-bolts.and.rope.clips.used.on.hoist.ropes.for.overhead.and.gantry.cranes.must.be.
installed.so.that.the.U-bolt.is.in.contact.with.the.dead.end.(short.or.non-load-carrying.
end).of.the.rope..Rope.clips.must.be.installed.in.accordance.with.the.manufacturer's.rec-
ommendation..All.nuts.on.newly.installed.clips.must.be.tightened.after.one.hour.of.use.
comPressors And comPressed AIr (29 cFr 1910.242)
Because. compressed. air. is. supplied. by. a. compressor,. great. care. must. be. taken.
to.ensure.that.certain.types.of.equipment.are.operating.in.a.safe.manner..Safety.
