OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 21 Rigging

Section 309 Damaged hooks

Unless otherwise specified by the manufacturer, a worn or damaged hook must be permanently removed from service if

(a) the throat opening, measured at the narrowest point, has increased by more than 15 percent of the original opening,
(b) the hook has twisted more than 10 degrees from the original plane of the hook,
(c) the hook has lost 10 percent or more of its cross-sectional area, or
(d) the hook is cracked or otherwise defective.