Chemical Hazard
A chemical hazard is any substance that can cause harm, primarily to people
Interpretation
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Chemicals mean chemical elements, compounds or mixtures thereof, whether natural or synthetic, but do not include micro-organisms
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Hazardous chemical means any chemical which possess any of the properties categorized in Schedule 1, or for which relevant information exists to indicate that the chemical is hazardous
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Elements is a substance that cannot be separated into simpler substances by chemical means.
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A compound is a substance composed of atoms of two or more elements chemically united in fixed proportions.
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Substance is a form of matter that has definite composition and distinct properties
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Mixture is a combination of two or more substances in which the substances retain their distinct identities. Mixtures do not have constant composition
Control Measures
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Eliminating the hazard
This means removing the hazard or hazardous work practice from the workplace. This is the most effective control measure and must always be considered before other control measures.
Example:
Using nails instead of using chemical based adhesives
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Substitution
Substitution is the replacement of a hazardous chemical with a chemical that is less hazardous and presents lower risks.
Example:
Substituting a highly flammable liquid with one that is less flammable or combustible
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Isolation
Isolation involves separating people from the chemicals or hazards by distance or barriers to prevent or minimise exposure.
Example:
Use of closed systems such as those used during the processing and transfer of flammable liquids in petroleum refineries, or the use of glove boxes or glove bags
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Engineering controls
Engineering controls are physical in nature, including mechanical devices or processes that eliminate or minimise the generation of chemicals, suppress or contain chemicals, or limit the area of contamination in the event of spills and leaks. They often involve partial enclosure, use of exhaust ventilation or automation of processes
Example:
Using intrinsically safe electrical equipment in hazardous areas
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Personal protective equipment (PPE)
PPE includes overalls, aprons, footwear, gloves, chemical resistant glasses, face shields and respirators.
