Which of the following is NOT categorized as an engineering control?

The correct choice, which is categorized as not being an engineering control, is personal protective equipment (PPE). Engineering controls are strategies designed to minimize or eliminate exposure to hazards through physical means or changes to the work environment. They focus on controlling the hazard at its source or through modification of the environment in which the hazard exists.

Isolation with containment is a fundamental engineering control that involves creating barriers to limit the spread of contaminants. HEPA filtration is also an engineering control that uses high-efficiency particulate air filters to capture airborne particulate matter, thereby improving air quality and protecting health. Airflow management refers to controlling the movement and direction of air to dilute or capture airborne contaminants effectively, which is another example of an engineering control.

In contrast, PPE includes items like gloves, masks, and respirators that workers wear to protect themselves from hazards. While PPE is critical for personal safety and is often used in conjunction with engineering controls, it does not modify or manage the physical environment or the source of the hazard itself. Thus, it is not classified under engineering controls.