223Electrical firing—testing of components

223 Electrical firing—testing of components (1) A shot-firer must, in accordance with subsection (2), test a firing cable to be used for electric firing operations— (a) for breaks and internal short-circuits; and (b) to work out its electrical resistance. (2) Firing cable testing must be carried out— (a) on each day of blasting operations— (i) before the operations start; or (ii) if there is more than 1 shift on the day—before each shift starts; and (b) if damage to the cable is suspected. (3) A shot-firer must test each electric detonator to be used in a blasting operation for continuity and resistance using a circuit tester. (4) The shot-firer must take the following precautions in testing an electric detonator: (a) the detonator must be covered in a way that will prevent injury to anyone, or damage to any property, if the detonator accidentally fires; (b) delay detonators must be kept covered like that for at least twice the delay period of the detonator indicated by the delay number or code marked on the detonator or its wires. (5) A shot-firer must not use a firing cable or detonator in a blasting operation that is found to be faulty when tested in accordance with this section until the fault is rectified.