Australian Capital Territory Numbered Regulations

DANGEROUS SUBSTANCES (EXPLOSIVES) REGULATIONS 2004 (NO 10 OF 2004) - REG 222

    (1)     A shotfirer using mains firing must ensure that—

        (a)     the mains circuit has adequate electrical capacity to fire the firing circuit; and

        (b)     the firing switch is installed between the source of electric power and the firing cable; and

        (c)     the switch is protected by a short-circuit device on the cable side to prevent an electrical current entering the firing cable when the switch is open; and

        (d)     the firing switch and the short-circuit device are placed in switchboxes that are—

              (i)     in a fixed and safe position; and

              (ii)     provided with an effective lock from which the key cannot be removed unless the box is closed and locked; and

              (iii)     so constructed that the box can neither be closed nor locked unless the switch or device is in the open position and the short-circuit device is in place.

    (2)     A shotfirer using mains firing must also ensure that—

        (a)     a switchbox has only a single key; and

        (b)     the key is in shotfirer's possession and control while he or she is on duty; and

        (c)     the switchbox is locked after a blasting operation.