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U.S. Geological Survey Manual

Appendix 18-1

Selection Guide for Respiratory Protection

HazardRespirator
Gas or Vapor Contaminants
Oxygen Deficiency Self-contained breathing apparatus. Combination air-line respirator with auxiliary positive pressure self-contained air supply.
Immediately dangerous to life or health. Self-contained breathing apparatus in positive pressure mode. Air-purifying, full face piece respirator with chemical canister (gas mask) for escape only. Self-rescue mouth piece respirator (for escape only). Combination air-line respirator with auxiliary positive pressure self-contained air supply.
Not immediately dangerous to life or health. Air-line respirator Air-purifying, half-mask of full face piece respirator with chemical cartridge(s) or canister.
Particulate Contaminants
Immediately dangerous to life or health Self-contained breathing apparatus in positive pressure mode. Air-purifying, full face piece respirator with appropriate filter (for escape only). Self-rescue mouthpiece respirator (for escape only). Combination air-line respirator with auxiliary positive pressure self-contained air supply.
Not immediately dangerous to life or health Air-purifying,half-mask or full face piece respirator with tiller pad or cartridges. Air-linerespirator. Air-line abrasive-blasting respirator.
Combination Gas, Vapor, and Particulate Contaminants
Immediately dangerous to life or health. Self-contained breathing apparatus inpositive pressure mode. Air-purifyingfull face piece respirator with chemical canister and appropriate filter (gasmask with filter for escape only). Self-rescue mouthpiece respirator (forescape only). Combination air-line respirator with auxiliary positive pressureself-contained air supply.
Not immediately dangerous to life or health. Air-line respirator. Air-purifying,half-mask or full face piece respirator with chemical cartridge or canister andappropriate filter.

Source: ANSI Z88.2-1980 “Practices for Respiratory Protection.”


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Last modification: 14-Sep-2012@17:18 (kk)