Which statement correctly lists the order of the hierarchy of controls from most to least effective?

Which statement correctly lists the order of the hierarchy of controls from most to least effective?

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

Answer: (A)

The main idea here is the hierarchy of controls, a way to rank risk-reduction measures from most to least effective. The aim is to remove the hazard at its source first, rather than relying on people to protect themselves. Starting with elimination means fully removing the hazard from the environment. If that isn’t possible, substitution means replacing the hazard with something less dangerous. If the hazard still remains, engineering controls come next, which physically separate people from the hazard (like guards or redesigns). After that, administrative controls adjust how people work to reduce exposure (like training, procedures, or scheduling). PPE is the last line of defense, providing a barrier between the worker and any residual risk. The listed order matches this sequence exactly: Eliminate, Substitution, Engineering Controls, Administrative Controls, PPE. Other orders mix in PPE or substitutions earlier than they should, which weakens overall protection because they don’t remove or lessen the hazard first.

The main idea here is the hierarchy of controls, a way to rank risk-reduction measures from most to least effective. The aim is to remove the hazard at its source first, rather than relying on people to protect themselves.

Starting with elimination means fully removing the hazard from the environment. If that isn’t possible, substitution means replacing the hazard with something less dangerous. If the hazard still remains, engineering controls come next, which physically separate people from the hazard (like guards or redesigns). After that, administrative controls adjust how people work to reduce exposure (like training, procedures, or scheduling). PPE is the last line of defense, providing a barrier between the worker and any residual risk.

The listed order matches this sequence exactly: Eliminate, Substitution, Engineering Controls, Administrative Controls, PPE. Other orders mix in PPE or substitutions earlier than they should, which weakens overall protection because they don’t remove or lessen the hazard first.