One way to get rid of a hazard is to replace a dangerous situation with one that is not. Chemicals can be switched, or substituted . A chemical that causes cancer may be replaced with a chemical that does not. Maybe no chemical is needed at all. There are many types of equipment that make work safer.
Ventilation is a good way to get rid of harmful substances in the air.
General ventilation can be for a large area such as a building s air handling system. Local ventilation is designed for a small area or specific operation like a fume hood. Ergonomics makes work safer by changing the job to fit the needs of each worker. Equipment that allows workers to do their jobs without having to work in awkward or uncomfortable positions is one way to prevent injuries. Job rotation, doing different tasks and rest breaks all help to reduce repetitive motion.