In hazard response, which item is considered the last line of defense?

In hazard response, which item is considered the last line of defense?

• A. PPE
• B. Elimination
• C. Engineering controls
• D. Administrative controls

Answer: (A)

In hazard response, protection is built in layers, starting with methods that remove or reduce the hazard itself and progressing to protections that guard the worker. Elimination and substitution try to remove or replace the hazard; engineering controls isolate or reduce exposure; administrative controls change how people work with the hazard. Personal protective equipment (PPE) comes last because it does not remove the hazard and relies on correct use, fit, training, and maintenance. PPE protects the worker from whatever exposure remains after all higher-level controls are in place, but it can fail if not used properly or if it’s insufficient for the level of risk. That’s why PPE is considered the final line of defense.

In hazard response, protection is built in layers, starting with methods that remove or reduce the hazard itself and progressing to protections that guard the worker. Elimination and substitution try to remove or replace the hazard; engineering controls isolate or reduce exposure; administrative controls change how people work with the hazard. Personal protective equipment (PPE) comes last because it does not remove the hazard and relies on correct use, fit, training, and maintenance. PPE protects the worker from whatever exposure remains after all higher-level controls are in place, but it can fail if not used properly or if it’s insufficient for the level of risk. That’s why PPE is considered the final line of defense.