Australian Capital Territory Numbered Regulations Australian Capital Territory Numbered Regulations(1) This regulation applies if a shotfirer uses detonating cord in a blasting operation.
(2) The shotfirer must ensure that—
(a) if the detonating cord is used as a down line, the cord is—
(i) secured tautly and extends by at least 600mm from the edge of the blast hole; and
(ii) cut from the reel; and
(b) excessive slack is not left in the branch line connections; and
(c) the branch line connections are made in accordance with AS 2187.2; and
(d) if both trunk and branch lines are used—the blast is initiated in a trunk line.
(3) In this regulation:
"branch line" means a length of detonating cord running between, and connected to, the trunk line and the primer.
"down line "means a line of detonating cord, used to initiate an explosive charge, by which a primer is lowered into a blast hole.
"trunk line" means the main line of detonating cord on the surface.