in a spray booth can be exposed to a variety of chemical and physical
hazards. 'Best Practices' are work procedures that have been developed
by the collision repair industry in conjunction with agencies such
as the Environmental Protection Agency, and the Canadian Council
of Ministers of the Environment. They are regarded as efficient
and safe ways to make sure tasks are done productively. By following
'Best Practices' when working, employees can minimize the risk of
being injured at work.
Here are examples
that have been developed with the EPA for working in a paint spray
Spray Paint in a Well-Ventilated Booth
A well-ventilated and properly maintained spray booth efficiently
removes paint overspray from the air, minimizing painter's contact
with hazardous coating materials. Regular filter changes reduce
emissions of pollutants from the shop and improve the environment.
A controlled flow of dust-free air improves the quality of the paint
job. Among spray booths-downdraft, semi-down, and crossdraft-a downdraft
is the most effective at removing hazardous overspray. Remember:
It is much better practice to spray inside a booth or prep station
than in an open bay and it is the law in many jurisdictions.
Use High Transfer Efficiency Spray Guns
High efficiency guns like HVLP spray guns have higher transfer efficiencies
(60-70%) than conventional spray guns (20-30%). Therefore, with
HVLP spray guns, more paint ends up on the car and less is lost
as overspray. This efficiency is a great benefit to painters, who
have less contact with toxic paint components and the shop, which
also saves money in paint costs
Supplied Respirators and Chemical Resistant Gloves and Clothing
By using a supplied-air, positive-pressure respirator, painters
are much less likely to breathe harmful chemicals in paint spray.
Most paint manufacturers recommend a supplied-air respirator when
spraying highly toxic materials like isocyanates found in paint
hardeners. An air-purifying respirator will not provide adequate
protection unless you develop and implement a proper filter change-out
schedule, which can be a complex process. See above under Respirator
Chemical resistant gloves and full body paint suits help prevent
skin contact with harmful paint chemicals. Select gloves and clothing
that offer protection from the variety of chemicals in paints and
coatings. For gloves, nitrile or butyl rubber are generally recommended,
but latex gloves are not. Check the MSDS for the specific paints
and chemicals you are spraying, and follow the directions provided.
See above under Gloves.
For more information see the EPA web site http://www.epa.gov/dfe/pubs/auto/bp_spray/index.htm
cleaning practices are covered in the following section "Spray