CIEE Manual Material Handling Assessment 2

Question 1

Which NIOSH equation variable accounts for the horizontal distance between the worker's hands and the midpoint of the ankles at the origin of the lift?

Accepted Answer

Horizontal multiplier (HM)

Answer

The horizontal multiplier (HM) penalizes lifts where load is far from the body, calculated as 25/H where H is the horizontal distance in cm.

Question 2

In the NIOSH lifting equation, what is the Recommended Weight Limit (RWL) when the Lifting Index (LI) equals 1.0?

Accepted Answer

RWL equals the actual load weight

Answer

An LI of 1.0 means the actual load weight exactly equals the RWL, placing the task at the boundary of acceptable risk.

Question 3

Which factor distinguishes a 'significant control' condition at the destination in the revised NIOSH lifting equation?

Accepted Answer

The worker must carefully position or guide the load at the destination

Answer

Significant control at destination requires the evaluator to calculate a separate RWL for both origin and destination, using the lower value.

Question 4

A worker lifts 12 kg boxes from floor level (V=0) to a shelf at 150 cm. Compared to a lift where V=75 cm, the vertical multiplier (VM) at the origin is:

Accepted Answer

Lower, because floor-level origin increases lumbar stress

Answer

VM = 1 – (0.003 × |V – 75|), so V=0 gives VM = 1 – (0.003 × 75) = 0.775, which is lower than VM = 1.0 at V=75 cm.

Question 5

When assessing push/pull tasks using the Snook and Ciriello tables, which parameter most directly determines the acceptable force limit for sustained pushing?

Accepted Answer

Distance of the push task and frequency of exertion

Answer

Snook and Ciriello tables are indexed by push/pull distance, frequency, and the height at which force is applied to determine acceptable force limits.

(CIEE) Certified Industrial Ergonomic Evaluator Practice Test

(CIEE) Certified Industrial Ergonomic Evaluator Practice Test

CIEE Manual Material Handling Assessment 2