OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 8 Entrances, Walkways, Stairways and Ladders

Section 128 Ladders on extending booms

A ladder attached to an extending boom moves with the boom while the boom is being positioned. As a result, the ladder is an unsafe place for a worker to be because of the chance of losing balance and falling. With the exception of professional fire fighters working on fire fighting equipment, no worker is permitted to be on the ladder attached to an extending boom during boom motion.

Similarly, a boom-mounted ladder is an unsafe place to be until the powered mobile equipment to which the boom is attached is stable. If the equipment has outriggers, the outriggers must be set before a worker climbs the ladder.