Which statement best differentiates risk reduction by design from administrative controls?

Which statement best differentiates risk reduction by design from administrative controls?

• A. Administrative controls inherently reduce hazard potential; design measures rely on procedures and training.
• B. Design measures inherently reduce hazard potential; administrative controls rely on procedures, training, and work practices rather than hardware changes.
• C. Both approaches reduce hazard in exactly the same way.
• D. Hazard reduction by design only applies to mechanical systems, not software.

Answer: (B)

The main idea is that risk reduction by design relies on engineering changes baked into the system itself, while administrative controls reduce risk through how people work—procedures, training, and work practices not hardware changes. When you redesign a system to remove or mitigate a hazard, you’re changing the thing you’re protecting (the hardware, software, interfaces, safety interlocks), so the hazard potential is lowered at the source. Administrative controls, on the other hand, steer behavior and require people to follow rules, perform training, and adhere to work practices to reduce risk, without changing the underlying hardware or software. This distinction matters because design changes tend to be more reliable over time since they don’t depend on constant human compliance, whereas administrative controls require ongoing enforcement and can be undermined by human error or noncompliance. For example, adding a physical guard or a safety interlock is a design measure; issuing a training program or a checklist is an administrative control. The best statement captures that design measures inherently reduce hazard potential, while administrative controls rely on procedures, training, and work practices rather than hardware changes. The other options mix up who reduces hazard, claim the approaches work the same, or incorrectly limit design to mechanical systems (software can also be made safer through design).

The main idea is that risk reduction by design relies on engineering changes baked into the system itself, while administrative controls reduce risk through how people work—procedures, training, and work practices not hardware changes. When you redesign a system to remove or mitigate a hazard, you’re changing the thing you’re protecting (the hardware, software, interfaces, safety interlocks), so the hazard potential is lowered at the source. Administrative controls, on the other hand, steer behavior and require people to follow rules, perform training, and adhere to work practices to reduce risk, without changing the underlying hardware or software.

This distinction matters because design changes tend to be more reliable over time since they don’t depend on constant human compliance, whereas administrative controls require ongoing enforcement and can be undermined by human error or noncompliance. For example, adding a physical guard or a safety interlock is a design measure; issuing a training program or a checklist is an administrative control.

The best statement captures that design measures inherently reduce hazard potential, while administrative controls rely on procedures, training, and work practices rather than hardware changes. The other options mix up who reduces hazard, claim the approaches work the same, or incorrectly limit design to mechanical systems (software can also be made safer through design).