OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 31 Diving Operations

Section 437 Intakes, pipes and tunnels

This section amends the referenced CSA standard, providing the diver with an added level of safety by requiring that the intake mechanism of a pipe, tunnel, duct or similar mechanism be locked out. Stopping the flow associated with the intake is by itself insufficient – someone could inadvertently turn on a pump or motor and re-establish the flow, exposing a diver to a preventable life-threatening hazard. The amendment prohibits work to proceed unless the flow is stopped.