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Architecture Engineering QUESTION #2370
Question 1
In the context of Occupational Health and Safety (OHS), the Hierarchy of Controls for managing workplace hazards lists five levels in order of effectiveness. Which sequence is correct from MOST to LEAST effective?
  • Administrative controls → PPE → Substitution → Engineering controls → Elimination
  • Elimination → Substitution → Engineering controls → Administrative controls → PPE✔️
  • PPE → Administrative controls → Engineering controls → Substitution → Elimination
  • Engineering controls → Elimination → PPE → Substitution → Administrative controls
Correct Answer Explanation
The Hierarchy of Controls from most to least effective is: (1) Elimination — physically remove the hazard; (2) Substitution — replace the hazard with something safer; (3) Engineering controls — isolate people from the hazard (guards, ventilation); (4) Administrative controls — change the way people work (procedures, training, schedules); (5) PPE — protect the worker with personal protective equipment. PPE is the last resort as it does not remove the hazard.