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Hierarchy of Control Measures | 5 Key Pillars to Reduce Risk

Safeti School | Workplace Health and Safety
Safeti School | Workplace Health and Safety
Hierarchy of Control Measures | 5 Key Pillars to Reduce Risk

The risk Hierarchy of Controls or risk hierarchy is a system used in workplace environments to minimize or eliminate exposure to hazards. It is a widely accepted system promoted by safety organizations.

As discussed in the podcast, we recommend you check our Health and Safety Risk Assessment – Complete Beginner’s Guide resource.

The risk control concept is taught to managers in industry, to be promoted as standard practice in the workplace. Various illustrations are used to depict this system, most commonly a triangle. Let’s take look at what it looks like…

Hierarchy of Control Steps | The Triangle

The levels in the risk hierarchy of control measures are, in order of decreasing effectiveness:

  • Elimination
  • Substitution
  • Engineering controls
  • Administrative controls
  • Personal protective equipment
Hierarchy of Controls - Risk Assessment

Hierarchy of Controls EXPLAINED!

As you see above the risk Hierarchy of Controls is often represented by a triangular diagram that depicts the different controls in order of how effective they might be in controlling risk.

Our explainer video series below looks at these options in much more detail…

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This video course, hosted by Chartered H&S professional Richard Collins, takes you through a step-by-step, interactive tutorial & activities to help your team carry out Risk Assessment with confidence.

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HSE Hierarchy of Controls Steps | Recap

Hopefully our video has given you a valuable overview of the hierarchy of controls – now, let’s recap on those different levels of control available once we assess the risk. At the top of the Hierarchy of Controls, we start with the most effective option – Elimination.

1. Elimination

Physical removal of the hazard — this is the most effective hazard control.

For example, if employees must work high above the ground, the hazard can be eliminated by moving the piece they are working on to ground level to eliminate the need to work at heights.

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2. Substitution

Substitution, the second most effective hazard control, involves replacing something that produces a hazard (similar to elimination) with something that does not produce a hazard – for example, replacing lead-based paint with titanium white.

Hierarchy of Controls Substitution

To be an effective control, the new product must not produce another hazard.

As airborne dust can be hazardous, if a product can be purchased with a larger particle size, the smaller product may effectively be substituted with the larger product.

Substituting the material may result in a reduction of risk to respiratory health.

3. Engineering Controls

The third most effective means of risk control is engineered controls. These do not eliminate hazards, but rather isolate people from hazards.

Capital costs of engineered controls tend to be higher than less effective controls in the hierarchy, however they may reduce future costs.

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For example, a crew might build a work platform rather than purchase, replace, and maintain fall arrest equipment.

“Enclosure and isolation” creates a physical barrier between personnel and hazards, such as using remotely controlled equipment. Fume hoods can remove airborne contaminants as a means of engineered control.

4. Administrative controls:

Administrative controls are changes to the way people work.

Examples of administrative controls include procedure changes, employee training, and installation of signs and warning labels (such as those in the Workplace Hazardous Materials Information System).

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Administrative controls do not remove hazards, but intend to limit or prevent people’s exposure to the hazards.

A simple example of this would be such as completing road construction at night, when fewer people are driving. Another administrative control, would be performing a daily check on plant e.g. forklifts, to ensure they are in good working order.

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5. Personal Protective Equipment:

Personal protective equipment (PPE) includes gloves, respirators, hard hats, safety glasses, high-visibility clothing, and safety footwear.

PPE is the least effective means of controlling hazards because of the high potential for damage to render PPE ineffective.

Hierarchy of Control

Additionally, some PPE, such as respirators, increase physiological effort to complete a task.

Therefore, you may need to perform feasability reviews and/or occupational health assessments to ensure workers can use the PPE without risking their health.

Risk Hierarchy of Controls | Complete!

Thanks for visiting us, we hope this resource on the HSE Hierarchy of Control measures was helpful. If you would like to learn how this fits into the bigger picture of assessing risk, we recommend you check our Health and Safety Risk Assessment – Complete Beginner’s Guide resource.

For more free learning for your business, make sure to join us for Safeti School!

Hierarchy of Control Measures | Safeti

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