CES Industrial & Manual Handling Ergonomics

Question 1

According to the revised NIOSH Lifting Equation, what is the load constant (maximum RWL) under ideal lifting conditions?

Accepted Answer

51 pounds (23 kg)

Answer

35 pounds (16 kg)

Answer

75 pounds (34 kg)

Answer

25 pounds (11 kg)

Question 2

Which job factor in the Strain Index (SI) is weighted most heavily in calculating MSD risk for distal upper extremity tasks?

Accepted Answer

Intensity of exertion

Answer

Duration of task per day

Answer

Posture of the wrist and forearm

Answer

Speed of work

Question 3

What is the recommended maximum initial pushing force for a loaded cart on a level surface for male workers per Liberty Mutual tables?

Accepted Answer

Approximately 50 lbs (222 N) for initial force

Answer

100 lbs sustained throughout the push

Answer

25 lbs at all times regardless of surface

Answer

Any force up to the worker's maximum voluntary capacity

Question 4

Which ergonomic control most effectively reduces the risk of back injury during palletizing tasks?

Accepted Answer

Installing a pallet turntable and scissor lift table to keep loads at waist height

Answer

Training workers on proper lifting technique only

Answer

Requiring workers to wear back support belts

Answer

Reducing pallet height limits by 10%

Question 5

What is 'team lifting' and when is it recommended as a control measure?

Accepted Answer

Two or more workers sharing a load too heavy or awkward for one person, used when engineering controls are unavailable

Answer

A training exercise for new employees

Answer

Required for all lifts exceeding 10 lbs

Answer

A technique requiring specialized certification

Question 6

Which handle design feature most reduces grip force requirements for industrial hand tools?

Accepted Answer

Handle diameter matched to the worker's hand size (approximately 1.25-1.75 inches for most adults)

Answer

Maximum handle length possible

Answer

Smooth, polished handle surfaces

Answer

Square cross-section handles