Indoor Air sciences CSMI Practice Exam

Which of the following is a common feature of engineering controls?

1. Use of respirators

2. Modification of equipment

3. Regular employee training

4. Implementation of work practices

The correct answer is: Modification of equipment

Engineering controls are designed to reduce or eliminate hazards at their source, thereby minimizing the need for personal protective equipment or administrative controls. The modification of equipment is a pivotal aspect of these controls, as it often includes redesigning tools, machines, or work areas to enhance safety and efficiency. For example, installing ventilation systems to reduce airborne contaminants or enclosing processes to prevent exposure are both considered modifications that aim to protect workers without relying solely on behavior or personal protective equipment. In contrast, other options like the use of respirators pertain more to personal protective equipment, while regular employee training and work practices are categorized under administrative controls. These latter approaches tend to be less effective than engineering controls, as they require constant compliance and do not inherently eliminate the hazard. Hence, the modification of equipment is a quintessential characteristic of engineering controls, ensuring a more permanent solution to workplace safety issues.