Safety Trained Supervisor in Construction (STSC) Practice Exam 2025 - Free STSC Practice Questions and Study Guide

The correct order of hazard control methods from highest to lowest effectiveness is indeed correctly identified as designing out the hazard, eliminating the hazard, reducing exposure, and using personal protective equipment (PPE).

Starting with the most effective method, designing out the hazard involves creating a work environment that eliminates potential risks altogether through careful planning and engineering solutions. This approach is aimed at removing the hazard before it can cause any harm, which is the ideal goal in safety management.

Following that, eliminating the hazard is another highly effective method, which means removing the hazard completely from the workplace environment. Both designing out and eliminating hazards are proactive strategies, focusing on preventing risks rather than managing them after they have been introduced.

Next, reducing exposure relates to minimizing the likelihood or severity of exposure to a hazard that still exists. This approach might include implementing measures such as job rotation, limiting the amount of time workers spend near the hazard, or using barriers to reduce contact.

Finally, using PPE is considered the lowest effective control method. While PPE is essential for protecting workers, it is a reactive measure that comes into play after other controls have been implemented. It does not eliminate or reduce hazards at the source but rather serves as a last line of defense when other controls may not be sufficient.

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