CSO Ergonomics and Manual Handling 3

Question 1

What does NIOSH stand for, and why is it relevant to manual lifting guidelines?

Accepted Answer

National Institute for Occupational Safety and Health; it developed the Revised Lifting Equation used to calculate safe lifting limits

Answer

National Institute of Safety Hazards; it sets fire and chemical safety regulations

Answer

National Index of Standard Hazards; it certifies all workplace lifting equipment

Answer

National Institute of Standard Handling; it inspects workplaces for lifting violations

Question 2

Which part of the body is most frequently injured during manual material handling tasks in occupational settings?

Accepted Answer

Lower back, due to compressive and shear forces on lumbar discs

Answer

Hands and fingers due to grip pressure

Answer

Feet and ankles from load drops

Answer

Upper arms from sustained carrying

Question 3

What is the primary intended purpose of wearing a back support belt during manual lifting tasks?

Accepted Answer

To increase intra-abdominal pressure and serve as a tactile reminder to use correct lifting posture

Answer

To allow workers to safely lift loads heavier than their normal capacity

Answer

To eliminate the risk of back injury completely during all manual lifts

Answer

To protect the lower back from chemical burns or physical impacts

Question 4

When moving a load on a cart or dolly, is it generally safer to push or pull the load, and why?

Accepted Answer

Push, because it allows use of body weight, promotes a more neutral spine posture, and reduces awkward shoulder loading

Answer

Pull, because pulling gives you a clearer view of the direction of travel

Answer

There is no meaningful ergonomic difference between pushing and pulling a wheeled load

Answer

Pull, because pulling requires significantly less force than pushing the same load

Question 5

What is cumulative trauma disorder (CTD) in the context of workplace ergonomics?

Accepted Answer

A condition caused by repeated microtrauma to muscles, tendons, nerves, and joints that accumulates over time

Answer

An acute injury caused by a single traumatic event such as a fall or being struck by an object

Answer

A type of chemical exposure injury from repeated contact with hazardous substances

Answer

An acute spinal compression injury requiring immediate surgical intervention

Question 6

What is the correct course of action when a load is determined to be too heavy for one person to lift safely?

Accepted Answer

Use mechanical lifting aids or request a co-worker to perform a coordinated team lift

Answer

Attempt the lift anyway but perform it as quickly as possible to minimize strain duration

Answer

Skip the task entirely and report it as an unsafe condition requiring management sign-off before any work

Answer

Put on a back support belt and additional PPE to compensate for the extra load weight

Question 7

Which of the following best describes 'neutral posture' as used in ergonomics?

Accepted Answer

A body position in which joints are naturally aligned, minimizing stress on muscles, tendons, nerves, and ligaments

Answer

A position in which muscles are maximally contracted to provide structural support under heavy load

Answer

A completely stationary, rigid stance that eliminates all body movement during work

Answer

A posture guideline that applies exclusively to seated computer workstation tasks