Ergonomic Design & Intervention Strategies Flashcards
7 cards from real CEA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Ergonomic Design & Intervention Strategies flashcards as text
What is the primary goal of a macroergonomic approach to workplace design?
Answer: Aligning organizational systems, culture, and work processes with human capabilities
Macroergonomics addresses the broader sociotechnical system, ensuring organizational structures and processes support human performance.
A squeeze force measurement of 32 lbs is recorded during a gripping task. According to ergonomic guidelines, this level would most likely be classified as:
Answer: Moderate to high force requiring evaluation
Grip forces above approximately 10 lbs for repetitive tasks are generally considered moderate-to-high risk requiring ergonomic evaluation.
Which ergonomic principle does a tilted work surface (angled 10–20°) for assembly tasks primarily address?
Answer: Neutral neck and wrist posture
A tilted work surface allows workers to see and access parts with a more neutral neck and wrist posture, reducing flexion.
In the context of hand tool design, what does 'pinch grip' avoidance primarily prevent?
Answer: De Quervain's tenosynovitis and high tendon loading in the thumb
Pinch grips produce significantly higher tendon forces than power grips and are a primary risk factor for thumb and wrist disorders like De Quervain's.
An ergonomist recommends replacing a fixed-height conveyor with a height-adjustable model. This intervention primarily benefits which worker characteristic?
Answer: The range of worker body size variability (anthropometric diversity)
Height-adjustable equipment accommodates anthropometric variability, ensuring workers of different statures can maintain neutral postures.
Which of the following is a key advantage of conducting a proactive (prospective) ergonomic assessment versus a reactive one?
Answer: Hazards are identified and controlled before injuries occur
Proactive assessments identify ergonomic risk factors during design or process planning, preventing injuries before they happen.
The concept of 'zone of convenient reach' in workstation design refers to:
Answer: The area reachable while maintaining a neutral, non-stretched posture
The zone of convenient reach is the area accessible without excessive reach or trunk lean, keeping joints in near-neutral positions.