CEA Ergonomic Design & Intervention Strategies 2

Question 1

Which hierarchy of controls level provides the greatest long-term effectiveness in ergonomic intervention?

Accepted Answer

Elimination

Answer

Elimination removes the hazard entirely and is the most effective level in the hierarchy of controls.

Question 2

A workstation redesign reduces a worker's required reach distance from 26 inches to 16 inches. This is an example of which intervention type?

Accepted Answer

Engineering control

Answer

Modifying the physical workstation layout to reduce reach distance is an engineering control.

Question 3

When applying the NIOSH Lifting Equation, what does the Recommended Weight Limit (RWL) represent?

Accepted Answer

The weight a healthy worker can lift without injury risk over a shift

Answer

The RWL is the weight that nearly all healthy workers can lift repeatedly over an 8-hour shift without increased injury risk.

Question 4

A job rotation program is introduced to alternate workers between high-force and low-force tasks. Which limitation is most important to consider?

Accepted Answer

Workers may still be exposed to cumulative loading if rotated tasks use the same muscle groups

Answer

If rotated tasks engage the same muscle groups, cumulative loading and fatigue may persist despite the change in activity.

Question 5

Which seated workstation dimension adjustment would most directly reduce lumbar compression forces?

Accepted Answer

Providing adjustable lumbar support

Answer

Adjustable lumbar support maintains the natural lordotic curve, reducing spinal compressive forces during prolonged sitting.

(CEA) Certified Ergonomics Associate Practice Test