Environmental Engineering Reference
In-Depth Information
compressed.air.is.used.to.empty.containers.of.liquid,.the.safe.working.pressure.of.
the.container.must.be.checked.
When.compressed.air.is.used.with.abrasive.blast.cleaning.equipment,.the.operat-
ing.valve.must.be.held.open.manually..As.compressed.air.is.used.to.inlate.auto.tires,.a.
clip-on.chuck.and.an.inline.regulator.preset.to.40.psi.are.required..It.should.be.prohib-
ited.to.use.compressed.air.to.clean.up.or.move.combustible.dust.because.such.action.
could.cause.the.dust.to.be.suspended.in.the.air.and.cause.a.ire.or.explosion.hazard.
comPressed gAs cylInders (29 cFr 1910.101 And 1910.253)
Compressed. gas. cylinders. have. exploded. and. become. airborne.. There. is. a. lot. of.
stored.energy.in.a.compressed.gas.cylinder,.which.is.why.they.should.be.handled.with.
great.care.and.respect..A.collar.or.valve.protection.device.such.as.a.recess.is.required.
to.protect.cylinders.with.a.water.weight.capacity.greater.than.30.pounds..Cylinders.
should. be. legibly. marked. to. clearly. identify. the. gas. contained. within. the. cylinder..
Compressed. gas. cylinders. must. be. stored. in. areas. that. are. protected. from. external.
heat. sources,. such. as. lame. impingement,. intense. radiant. heat,. electric. arcs,. and.
high.temperature.lines..Inside.buildings,.cylinders.must.be.stored.in.well-protected,.
well-ventilated,.dry.locations.away.from.combustible.materials.by.20.feet..Also,.the.
in-plant.handling,.storage,.and.utilization.of.all.compressed.gases.in.cylinders,.por-
table.tanks,.rail.tank.cars,.or.motor.vehicle.cargo.tanks.must.be.in.accordance.with.
Compressed.Gas.Association.pamphlet.P-1-1965.
Cylinders.must.be.located.or.stored.in.areas.where.they.will.not.be.damaged.by.
passing.or.falling.objects.or.subject.to.tampering.by.unauthorized.persons..Cylinders.
must.be.stored.or.transported.in.a.manner.to.prevent.them.from.creating.a.hazard.by.
tipping,.falling,.or.rolling.and.stored.20.feet.away.from.highly.combustible.materials.
(see.Figure 25.3)..Where.a.cylinder.is.designed.to.accept.a.valve.protection.cap,.caps.
must.to.be.in.place.with.the.exception.of.when.the.cylinder.is.in.use.or.is.connected.
for.use.
Cylinders.containing.liqueied.fuel.gas.should.be.stored.or.transported.in.a.posi-
tion.so.that.the.safety.relief.device.is.always.in.direct.contact.with.the.vapor.space.
in.the.cylinder..All.valves.must.be.closed.off.before.a.cylinder.is.moved,.when.the.
cylinder.is.empty,.and.at.the.completion.of.each.job..Low-pressure.fuel-gas.cylinders.
should.be.checked.periodically.for.corrosion,.general.distortion,.cracks,.or.any.other.
defect.that.might.indicate.a.weakness.or.render.it.unit.for.service.
comPressed gAses (29 cFr 1910.101, 1910.102,
1910.103, 1910.104, 1910.106, And 1910.253)
There.are.several.hazards.associated.with.compressed.gases,.including.oxygen.dis-
placement,.ires,.explosions,.toxic.effects.from.certain.gases,.as.well.as.the.physi-
cal.hazards.associated.with.pressurized.systems..Special.storage,.use,.and.handling.
precautions.are.necessary.in.order.to.control.these.hazards..There.are.speciic.safety.
requirements. for. many. of. the. compressed. gases. (e.g.,.acetylene,. hydrogen,. nitrous.
oxide,.and.oxygen).
