Name the three PPE levels and give one scenario for each.

• A. Level A for unknown hazards with a fully encapsulated suit
• B. Level B for known hazards with splash protection but no fully encapsulated suit
• C. Level C for known airborne hazards with air-purifying respirators
• D. Level D for minimal PPE with normal clothing

Answer: (A)

The main idea is choosing the PPE level based on how well the gear must protect against unknown or highly hazardous conditions. Level A represents the maximum protection: a fully encapsulated, vapor-tight suit paired with a self-contained breathing apparatus. This setup blocks skin, eye, and respiratory exposure when hazards are unknown or highly volatile, so you can’t rely on the surrounding air for safe breathing. That’s why describing Level A as “unknown hazards with a fully encapsulated suit” is the best fit for the question—it signals the need for the most protective ensemble because the exact nature of the hazard isn’t known.

Other levels describe progressively less skin protection and different respirator configurations: Level B uses splash-proprotective clothing with a high-level respiratory device but not a fully encapsulated suit, Level C relies on an air-purifying respirator for known airborne hazards, and Level D is minimal protection suitable for nonhazardous environments.