8.What are the common contaminants and hazards
in working area?
Damage to our lings
is serious and often irreversible. Different working
areas and practices expose us to a variety of
hazards such as :
Silica and asbestos can damage lung tissue if
they enter the lungs and settle there. When
this happens, less tissue is in contact with
blood vessels, so reducing the rate at which
oxygen is absorbed making breathing more difficult.
Substances such as lead produce systematic poisons
which, when inhaled, enter the bloodstream and
cause damage to other parts of the body, including
the central nervous system.
Organic vapors entering the bloodstream have
an anaesthetic-like effect on the brain and
cause you feel dizzy, reducing co-ordination.
The following substances are examples of Respiratory
-- Some Glues and Resins.
-- Soldening Flux.
-- Laboratory Animals.
-- Wood Dusts.