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706 Conducting a Job Hazard Analysis (JHA)
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Engineering Controls

If you cannot eliminate or substitute a hazard, the next best strategy is to "engineer the hazard out" by using control methods that physically change a machine or work environment.

Good design is necessary to prevent injuries.

Engineering controls are built into the design of a facility, equipment or process to minimize the hazard. Engineering controls are a very reliable way to control worker exposures as long as the controls are properly designed, used and maintained.

If, during the JHA, you discover a hazard that can be engineered out, do it. Turn the dangerous step into a safe step that doesn't require safety precautions. Engineering controls may include:

  • Enclosing the hazard using enclosed cabs, enclosures for noisy equipment, or other means;
  • Isolating the hazard with interlocks, machine guards, blast shields, welding curtains, or other means; and
  • Removing or redirecting the hazard, such as with local and exhaust ventilation.

Read more about engineering controls.

Knowledge Check Choose the best answer for the question.

4-4. Which is an effective method to eliminate or reduce a hazard in the workplace?