OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 9 Fall Protection

Section 150.3 Prusik and similar knots

A Prusik sling, using a properly tied prusik knot, creates a sliding hitch knot that can be used in place of a fall arrester. Many other sliding hitch knots can also be made. Because its construction, effectiveness and safe use are so dependent on the user’s knowledge and experience, the knots’ use is restricted to competent rescue or emergency services personnel, or in an emergency situation to a worker trained in its use and limitations. With the exception of workers involved in tree care operations (see Part 39) and workers involved in work requiring rope access (see Part 41), the use of prusik or similar hitches is prohibited under normal working conditions. A fall arrester meeting the requirements of section 144 must be used.