Environmental Engineering Reference
In-Depth Information
Respiratory Selection for Routine Use of Respirators
Hazard
Oxygen
Deficiency
Toxic
Contaminant
Pressure-
Demand
SCBA
Pressure-Demand
Airline with
Auxiliary SCBA
Immediately
Dangerous to
Life or Health
Not Immediately
Dangerous to
Life or Health
Pressure-
Demand
SCBA
Pressure-Demand
Airline with
Auxiliary SCBA
Particulate
Airline
Respirator
Filter
Respirator
Powered
Air-Purifying
Respirator
Gas or Vapor
Gas or Vapor
and Particulate
Chemical
Cartridge
Respirator
Airline
Respirator
Combination
Cartridge Plus
Filter Respirator
Airline
Respirator
Gas Mask
Gas Mask
FIgure 24.11 Respirator.selection.low.chart..(Courtesy.of.the.Occupational.Safety.and.
Health.Administration.)
the.selection.and.use.of.air-purifying.respirators.(APR)..All.selected.respirators.are.
to.be.NIOSH-certiied.(see.Figure 24.11).
Filter.classiications.are.marked.on.the.ilter.or.ilter.package..These.classiica-
tions.are.N-Series:.Not.Oil.Resistant.(approved.for.non-oil.particulate.contaminants.
such.as.dust,.fumes,.or.mists.not.containing.oil);.R-Series:.Oil.Resistant.(approved.
for.all.particulate.contaminants,.including.those.containing.oil.such.as.dusts,.mists,.
or.fumes—time.restriction.of.8.hours.when.oils.are.present);.and.P-Series:.Oil.Proof.
(approved. for. all. particulate. contaminants. including. those. containing. oil. such. as.
dust,.fumes,.or.mists)..(See.manufacturer's.time.use.restrictions.on.packaging.)
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