Which category of hazard control is favored over administrative controls and PPE because it removes the hazard before it can contact the worker?

Which category of hazard control is favored over administrative controls and PPE because it removes the hazard before it can contact the worker?

• A. Engineering Controls
• B. Administrative Controls
• C. PPE
• D. Substitution

Answer: (A)

Engineering controls focus on removing or greatly reducing the hazard at its source so the worker is not exposed in the first place. This means changing the environment or equipment so contact with the hazard never occurs—think local exhaust ventilation that pulls fumes away, enclosures that keep a hazardous process contained, or machine guarding that physically prevents contact. Because the hazard is mitigated by design, exposure doesn’t depend on workers’ actions or on personal protective equipment working perfectly. Administrative controls rely on procedures and compliance, and PPE depends on correct and consistent use, both of which can fail or be bypassed. Substitution also removes the hazard at the source by replacing it with a less hazardous substance, but the key idea here is preventing exposure through environmental and process changes, which is the hallmark of engineering controls.

Engineering controls focus on removing or greatly reducing the hazard at its source so the worker is not exposed in the first place. This means changing the environment or equipment so contact with the hazard never occurs—think local exhaust ventilation that pulls fumes away, enclosures that keep a hazardous process contained, or machine guarding that physically prevents contact. Because the hazard is mitigated by design, exposure doesn’t depend on workers’ actions or on personal protective equipment working perfectly. Administrative controls rely on procedures and compliance, and PPE depends on correct and consistent use, both of which can fail or be bypassed. Substitution also removes the hazard at the source by replacing it with a less hazardous substance, but the key idea here is preventing exposure through environmental and process changes, which is the hallmark of engineering controls.