Engineering controls

Engineering controls are strategies designed to protect workers from hazardous conditions by placing a barrier between the worker and the hazard or by removing a hazardous substance through air ventilation. Engineering controls involve a physical change to the workplace itself, rather than relying on workers' behavior or requiring workers to wear personal protective equipment.

Types of Engineering Controls

There are two main types of engineering controls: Isolation and Ventilation.

Isolation

Isolation involves physically separating the worker from the hazard. This can be achieved through the use of enclosures, machine guards, or other types of barriers. For example, a worker who operates a noisy machine could be protected by an enclosure that blocks the sound waves from reaching the worker.

Ventilation

Ventilation is used to control exposures to airborne contaminants. It can be either general or local. General ventilation dilutes the concentration of the contaminant in the air, while Local exhaust ventilation captures and removes the contaminant at its source before it can disperse into the air.

Effectiveness of Engineering Controls

The effectiveness of engineering controls in reducing exposure to hazards depends on their proper design, installation, and maintenance. They should be designed by professionals who understand the specific hazards and the practical aspects of the workplace. They should also be regularly inspected and maintained to ensure they continue to function as intended.

See also

• Occupational safety and health
• Industrial hygiene
• Hazard prevention

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