OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 36 Mining

Section 640 Blasting apparatus

Subsection 640(1)

The marking of the blasting machine’s capacity lets the blaster know that the machine is able to initiate all the blasting detonators connected to it. The use of a blasting machine of incorrect capacity could lead to incomplete initiation and misfires.

Subsection 640(2)

Testing the blasting machine prior to any blast requiring its maximum current is essential to ensuring successful initiation of the detonator(s) connected to it. If the current is not sufficient, some detonators may not explode, creating production delays and a need to reblast.