OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 25 Tools, Equipment and Machinery

Section 372 Elevated conveyors

Elevated conveyors may present a hazard to workers from falling objects. Suggested safeguarding of elevated conveyors (see Figure 25.2) includes

(a) covering the entire length of the conveyor,
(b) installing expanded metal along the length of the conveyor,
(c) installing guardrails, and
(d) emergency stop cords along the entire length of the conveyor.

Figure 25.2 Examples of conveyor safeguarding

For more information
Best Practices on Conveyor Safety

 
MSHA’s Guide to Equipment Guarding
U.S. Department of Labour, Mine Safety and Health Administration (2004)

Conveyor side walls must be high enough to prevent materials from falling out of the conveyor. The trough the conveyor is running in must be of sufficient strength to prevent a worker who is using a designated walkway beneath the conveyor from being injured by falling materials or objects. A wide variety of materials are available for guard construction such as wire mesh panels, expanded metal, or solid sheet metal. The choice of material is generally dependant upon the size and weight of the material being handled.

A worker must use a walkway to cross a conveyor belt if the conveyor belt is moving or the conveyor belt is motionless but has not been locked out. A moving conveyor, or a motionless conveyor that suddenly and unexpectedly begins moving, could cause a worker to fall. If the worker falls onto the moving surface, the worker could be drawn into dangerous process equipment.

Similarly, crossing under a moving conveyor belt at a location other than a walkway may be dangerous. Such walkways are specially designed to offer protection from overhead falling objects and exposure to operating mechanisms.