Avoid Crystalline Silica (quartz) Dust
WARNING!
Avoid exposure to dust containing
crystalline silica particles. This dust can cause
serious injury to the lungs (silicosis).
Because crystalline silica is a basic component of sand
and granite, many activities at construction sites
produce dust containing crystalline silica. Trenching,
sawing and boring of material containing crystalline
silica can produce dust containing crystalline silica.
If dust which contains crystalline silica is present there
are guidelines which should be followed.
1.
Be aware of the health effects of crystalline silica and
that smoking adds to the damage.
2. Be aware of and follow OSHA (or other) guidelines for
exposure to airborne crystalline silica.
3. Know the work operations where exposure to
crystalline silica may occur.
4. Participate in air monitoring or training programs
offered by the employer.
5. Be aware of and use optional equipment controls such
as water sprays, local exhaust ventilation, and
enclosed cabs with positive pressure air conditioning.
6. Where respirators are required, wear a respirator
approved for protection against crystalline silica-
containing dust. Do not alter the respirator in any way.
Workers who use tight-fitting respirators cannot have
beards/mustaches which interfere with the respirator
seal to the face.
7. If possible, change into disposable or washable work
clothes at the worksite; shower and change into clean
clothing before leaving the worksite.
8. Do not eat, drink, use tobacco products, or apply
cosmetics in areas where there is dust containing
crystalline silica.
9. Store food, drink and personal belongings away from
the work area.
10. Wash hands and face before eating, drinking, smok-
ing, or applying cosmetics after leaving the exposure
area.
Avoid silica dust
Prepare for Safe Operation
15
Know the Working Area
Learn as much about your working area as possible.
Check at Ground or Floor Level
Thoroughly check the area for unusual or dangerous
conditions, such as tools, or items that may damage the
trowel or be propelled by the trowels rotating blades.
Note where pipes and forms are located. Locate and
mark protrusions (rebar, anchor bolts, floor drains, etc.)
in the concrete.
Plan Your Work
Know in advance the conditions likely to be
encountered, and plan for any likely emergency.
Getting on and off a Ride-On Trowel
If operating a ride-on trowel, mount and dismount
carefully. Use the steps and hand holds provided. Do
not use control levers as hand holds and never use
guard rings as steps. Watch for surfaces that may be
slippery. Never jump off a ride-on trowel.
Operating on an Elevated Deck
(Multi-Story Operation)
Consult local/state regulations before you operate
equipment on an elevated deck. If operating on an
elevated deck, ensure perimeter safety cabling of proper
size and strength is in place. Do not operate the trowel
close to the edge of the deck.
Use three points
of contact when
mounting and
dismounting
Prepare for Safe Operation
16
Summary of Contents for CRT 48-35L
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