In PPE classifications, which level corresponds to the ensemble with an encapsulating suit and SCBA?

• A. Level D
• B. Level A
• C. Level C
• D. Level B

Answer: (B)

The main idea is that a fully encapsulating chemical-protective suit paired with a self-contained breathing apparatus provides the maximum protection. The encapsulating suit seals the wearer completely from the environment, preventing skin contact, while the SCBA offers breathing air independent of outside air, which is crucial when the atmosphere may be toxic or unknown. This combination is used when there’s a high risk of inhalation or dermal exposure and you need the strongest possible barrier.

Other levels use less protective configurations: a non-encapsulating suit with an SCBA still protects the lungs but allows potential skin exposure; or an air-purifying respirator with protective clothing relies on filters and does not provide the same level of protection against a contaminated atmosphere; or basic work attire with minimal protection. Therefore, the described ensemble matches the top level of protection.