TABLE 1: SPECIFIED EXPOSURE CONTROL METHODS WHEN WORKING
WITH MATERIALS CONTAINING CRYSTALLINE SILICA
Engineering and Work Practice
Control Methods
Equipment / Task
(i) Stationary masonry saws Use saw equipped with integrated water delivery system that continuously
feeds water to the blade. Operate and maintain tool in accordance with
manufacturer’s instructions to minimize dust emissions.
(ii) Handheld power saws
(any blade diameter) Use saw equipped with integrated water delivery system that continuously feeds water
to the blade. Operate and maintain tool in accordance with manufacturer’s
instructions to minimize dust emissions.
• When used outdoors.
• When used indoors or in an enclosed area.
(iii) Handheld power saws for
cutting fiber-cement board
(with blade diameter of
8 inches or less) For tasks performed outdoors only:
Use saw equipped with commercially available dust collection system. Operate
and maintain tool in accordance with manufacturer’s instructions to minimize
dust emissions. Dust collector must provide the air flow recommended by the tool
manufacturer, or greater, and have a filter with 99% or greater efficiency.
(iv) Walk-behind saws Use saw equipped with integrated water delivery system that continuously feeds
water to the blade. Operate and maintain tool in accordance with manufacturer’s
instructions to minimize dust emissions.
• When