CES Injury Prevention & Risk Management 2

Question 1

A plant recorded 10 OSHA-recordable injuries over 400,000 employee hours worked. What is its Total Recordable Incidence Rate?

Accepted Answer

5.0

Answer

Incidence rate = (10 × 200,000) / 400,000 = 5.0 per 100 full-time workers.

Question 2

What load constant does the Revised NIOSH Lifting Equation use as the starting point for the Recommended Weight Limit?

Accepted Answer

23 kg (51 lb)

Answer

The load constant is 23 kg (51 lb), the maximum recommended weight under ideal lifting conditions.

Question 3

Under the Revised NIOSH Lifting Equation, a Lifting Index greater than which value means the task carries increased risk of low back pain for some workers?

Accepted Answer

1.0

Answer

An LI above 1.0 indicates elevated risk for some of the workforce, and the risk keeps rising as the LI increases.

Question 4

Warehouse workers lift 18 kg cartons from pallets on the floor. Which intervention ranks highest in the hierarchy of controls?

Accepted Answer

Redesign the process so cartons arrive on a conveyor at waist height

Answer

Removing the floor-level lift through redesign is elimination/engineering, which is more effective than administrative controls or PPE.

Question 5

What is NIOSH's position on using back belts to prevent lifting injuries in uninjured workers?

Accepted Answer

There is insufficient scientific evidence that they prevent back injuries

Answer

NIOSH concluded there is not enough evidence that back belts reduce injury risk, so it does not recommend them as a control.

CES - Certified Ergonomic Specialist Practice Test

CES - Certified Ergonomic Specialist Practice Test

CES Injury Prevention & Risk Management 2