Environmental Engineering Reference
In-Depth Information
tABle 24.3
criteria for laser safety glasses
Intensity, cW maximum
Power density (watts/cm
3
)
optical density
(o.d.)
Attenuation
Factor
10
-2
5
10
5
10
-1
6
10
6
...1.0
7
10
7
10
+1
8
10
8
Source:
. Courtesy.of.the.United.States.Department.of.Energy.
and. potential. splashes. or. sprays. of. hazardous. liquids.. Face. shields. do. not. protect.
employees.from.impact.hazards..However,.face.shields.in.combination.with.goggles.
or.safety.spectacles.to.protect.against.impact.hazards,.even.in.the.absence.of.dust.or.
potential.splashes,.provide.for.additional.protection.beyond.that.offered.by.goggles.
or.spectacles.alone.
Each.kind.of.protective.eyewear.is.designed.to.protect.against.speciic.hazards..
By. completing. the. hazard. assessment. of. the. workplace. outlined. in. the. previous.
.section,.you.will.be.able.to.identify.the.speciic.workplace.hazards.that.pose.a.threat.
to.employees'.eyes.and.faces..Train.employees.to.use.and.care.for.the.eye.protection.
provided..Employees.must.know.how.to.clean.their.eye.protectors..Allow.time.at.the.
end.of.their.shifts.to.do.the.following:
•.
Disassemble.goggles.or.spectacles.
•.
Thoroughly.clean.all.parts.with.soap.and.warm.water.
•.
Carefully.rinse.off.all.traces.of.soap.
•.
Replace.all.defective.parts.
Occasionally.disinfect.protective.eyewear..To.do.so,.after.cleaning,.the.following.
can.be.done:
.
1.. Immerse.and.swab.all.parts.for.ten.minutes.in.a.germicidal.solution.
.
2.. Remove.all.parts.from.the.solution.and.hang.in.a.clean.place.to.air.dry.at.
room.temperature.or.with.heated.air.
.
3.. Do.not.rinse.the.parts.after.submerging.them.in.the.disinfectant..Rinsing.
will.remove.the.germicidal.residue.that.remains.after.drying.
.
4.. Ultraviolet.disinfecting.and.spray-type.disinfecting.solutions.may.also.be.
used.after.washing.
If.the.goggles.or.spectacles.do.not.need.to.be.individually.designed.to.incor-
porate. an. employee's. corrective. lenses. and. the. eyewear. is. disinfected. between.
uses. by. different. employees,. more. than. one. employee. may. use. the. same. set. of.
protective.eyewear.
