OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 21 Rigging

Section 305 Synthetic fibre slings

Synthetic fibre web slings are easily cut and have poor abrasion resistance when compared with chain and wire rope slings. It is important to use slings made of the right material for the job. Nylon slings are damaged by acids, but resist caustics. Polyester slings are damaged by caustics, but resist acids. Sunlight, moisture and temperatures above 90° Celsius damage both nylon and polyester slings.

Subsection 305(1)

Figure 21.33 visually shows the rejection criteria stated in this subsection. Damaged slings must be permanently removed from service to prevent further use.

Figure 21.33 Examples of synthetic web sling rejection criteria

Subsection 305(2)

Acid and caustic heat burns, broken stitching in load-bearing splices, and damaged eyes and end fittings all affect the load-carrying capability of slings. Damaged slings must be permanently removed from service and physically altered to prevent further use.

Subsection 305(3)

If no single type of damage exceeds the specified limits, the employer must consider the sum of the individual effect of the various types of damage. If this is approximately equivalent to the effect from a single type of damage, the sling must be permanently removed from service and physically altered to prevent further use.

Subsection 305(4)

A synthetic fibre web sling that is permanently removed from service must be physically altered to prevent its further use. The simplest way to do this is to cut the sling into many small, unusable pieces. The pieces should be disposed of immediately.