What is Hierarchy of Controls?

Hierarchy of controls is a system used to eliminate or minimize exposure to identified hazards in the workplace.

This system is used as a guide to implement feasible and effective solutions to prevent incidents.

The premise behind hierarchy of control is to follow a systematic approach in identifying the most effective methods to prevent incidents.

Organizations should consider using the hierarchy of controls process whenever they are implementing corrective actions.

What are the five levels?

There are five levels to the hierarchy of controls:

Elimination - Physically remove the hazard

Substitution - Replace the hazards

Engineering controls - Isolate people from the hazard

Administrative control - Change the way people work

Personal protective equipment (PPE) - Protect the worker with PPE

How should we use it?

To use the hierarchy start at the top (eliminate) with the most effective control and move down each level to the least effective control method (PPE). 

When implementing corrective actions, first consider the feasibility of completely eliminating the hazard. If elimination is not feasible move down a level in an attempt to find another solution. Eventually you may use administrative controls and, or PPE to protect your workers. These least effective controls should not be considered until we have considered the more effective controls of elimination and substitution.

When should we use it?

Anytime an agency is seeking to control hazards! Always start at the top of the hierarchy of controls diagram and work your way down. This ensures due diligence, and that the most effective controls are adopted.