Clark S20 D, Operator'S Manual

Page: 29 / 170

Section 1. General Safety Rules
Carbon Monoxide and Fumes 1-17
Carbon Monoxide and Fumes
Be sure your employees understand that they must not use an
internal combustion engine in a closed area such as a cold storage
locker. Carbon monoxide is a colorless, odorless, poisonous gas
which can overcome your employees without warning. This gas is
the product of incomplete burning of any material containing carbon,
such as gasoline, LP and natural gas, and diesel fuel.
Internal combustion engines that use these fuels are sources of
exposure in the workplace. Control of carbon monoxide levels in the
workplace is dependent on ventilation and proper maintenance of
carbon monoxide producers including internal combustion-powered
equipment.
Properly running internal combustion engines will still produce
carbon monoxide emissions and deplete the oxygen supply
sufficiently, affecting the quality of ambient air in the work
environment if the ambient air exchange is not adequate. Always use
ventilation as the primary means of control by providing necessary
air exchange capability.
Ventilation shall be provided in enclosed areas where internal
combustion-powered equipment is used to maintain an atmosphere
that shall not exceed the contamination levels specified by the
American Conference of Governmental Industrial Hygienists,
"Threshold Limit Values of Airborne Contaminants." (See 29 CFR
1910.1000 Table Z-1.) This includes the atmosphere within the truck
cab when a cab is provided.
Common symptoms of carbon monoxide exposure may include
headaches, dizziness, and nausea. If employees exhibit these
symptoms, move them into fresh air, seek medical attention as
required, and determine the source of carbon monoxide by
monitoring "threshold limit values" in areas of exposure.
Questions concerning degree of concentration and methods of
sampling to ascertain the conditions present should be referred to a
qualified professional. Users must follow applicable local, state, and
federal regulations that apply to their workplace.