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rators). The respirator chosen depends on the se- and, in the case of positive pressure devices,
verity of exposure. will either reduce service time or waste breath-
ing air.
6. Explain how the respirator works, its
capabilities, and limitations. Negative-pressure 10. Provide the trainees with the lecture mate-
air-purifying respirators (e.g., disposable, half- rials (or a summary) developed by the program
mask, and full facepiece respirators) work by administrator to use as quick reference materi-
drawing ambient air through the filter element als.
during inhalation. Inhalation causes a negative
pressure to develop in the tight-fitting facepiece 11. Instruct trainees to refer all respirator
and allows air to enter while the particles are problems immediately to the respirator pro-
captured on the filter. Air leaves the facepiece gram administrator.
during exhalation because a positive pressure
develops in the facepiece and forces air out of the 12. Discuss the OSHA standard [29 CFR 1910.
mask through the filter (disposable) or through an 139] (see Appendix A) in detail with the
exhalation valve (replaceable and some trainee. Everyone must know the mandatory
disposable). PAPRs are equipped with a blower regulations.
that draws air through the filters into the
facepiece. PAPRs can be equipped with a tight- Training may need to be repeated yearly to
fitting facepiece or loose-fitting helmet or hood. maintain the respirator skills of the users.
Airline (supplied-air) respirators are provided
with air from a stationary source (compressor)
or a bottle. (See Step 2 for a discussion about OSHA Training Requirements Under 29
the advantages and disadvantages of different CFR 1910.139
respirator classes). The training recommendations listed in the
preceding section should provide the basis for
7. During the training session, give the user an adequate training program and summarize
the chance to handle and wear the respirator methods for satisfying the OSHA requirements
until the user is proficient. Also teach the user listed in 29 CFR 1910.139. These require-
how to perform the user seal check and wear ments are reprinted as a summary below and
the respirator in an uncontaminated environ- reproduced fully in Appendix A.
ment for a period of time. Instruct the user to
follow the manufacturer’s instructions pro-
vided with the respirator. Give workers a copy 1910.139 (a)(3) The employee shall
of the manufacturers instructions. use the provided respiratory protection in
accordance with instructions and training
8. Teach the user the importance of and how to received.
properly store disposable respirators. Teach the
user the importance of and how to clean, main- 1910.139 (b)(3) The user shall be in-
tain, and store replaceable filter respirators (un- structed and trained in the proper use of
less there is a central maintenance facility that respirators and their limitations.
provides this service for cleaning, see Step 7).
1910.139 (e)(2) The correct respirator
9. Explain that facial hair between the wearer’s shall be specified for each job. The respirator
skin and the sealing surfaces of the tight-fitting type is usually specified in the work proce-
respirator will prevent a good seal. A respirator dures by a qualified individual supervising
that permits negative-air pressure inside the the respiratory protective program. The indi-
facepiece during inhalation may allow leakage
20
