OHS Code

Published Date: July 01, 2009
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Part 33 Explosives

Section 509 Misfire waiting period

(1) If a blaster fired a charge using a safety fuse assembly and delay detonators and suspects a misfire, the employer and the blaster must ensure that no worker returns to or is permitted to approach the blasting area before the end of the longer of the following periods:

(a) 30 minutes after the last charge was fired or should have fired; or

(b) the period recommended by the manufacturer.

(2) If a blaster fired a charge using electric detonators and suspects a misfire, the employer and the blaster must ensure that no worker returns to or is permitted to approach the blasting area before the end of the longer of the following periods:

(a) 10 minutes after the last charge was fired or should have fired; or

(b) the period recommended by the manufacturer.