CIH CIH Ergonomics & Human Factors 3

Question 1

What percentage of all occupational injuries and illnesses in the US do musculoskeletal disorders (MSDs) typically represent?

Accepted Answer

Approximately 30%

Answer

Less than 5%

Answer

About 10%

Answer

More than 60%

Question 2

Which early symptom should prompt an employer to investigate potential ergonomic hazards before a recordable injury occurs?

Accepted Answer

Worker reports of persistent discomfort, pain, or numbness during work tasks

Answer

Occasional mild fatigue at end of shift

Answer

Single incidental slip or trip

Answer

One missed day of work from an unrelated illness

Question 3

In ergonomics, 'contact stress' refers to what type of hazard?

Accepted Answer

Localized mechanical pressure on soft tissue from hard surfaces or edges

Answer

Electrical shock from faulty equipment

Answer

Noise-induced hearing loss from tool vibration

Answer

Chemical burns from skin contact with solvents

Question 4

The OSHA ergonomics guidelines for meatpacking (1990) and nursing homes focus primarily on reducing which type of MSD?

Accepted Answer

Low back disorders from manual patient handling and heavy lifting

Answer

Hearing loss from vibrating equipment

Answer

Eye strain from computer monitor glare

Answer

Dermatitis from repetitive glove use

Question 5

Which NIOSH document provides guidance on designing computer workstations to reduce upper extremity and neck MSDs?

Accepted Answer

NIOSH Pub. 97-117 (Elements of Ergonomics Programs)

Answer

NIOSH Pub. 81-123 (Occupational Noise)

Answer

NIOSH Pub. 81-11 (Work Practices Guide for Manual Lifting)

Answer

NIOSH Pub. 89-106 (Proposed Alert — Repetitive Motion)

Question 6

A job rotation program is classified under which level of the ergonomic hazard control hierarchy?

Accepted Answer

Administrative controls

Answer

Elimination

Answer

Substitution

Answer

Engineering controls