IAGC LAND GEOPHYSICAL SAFETY MANUAL Edition 9 ... - CGISS

6) From his station, the shooter should have an unobstructed view of the shotpointarea, or he must station personnel around the area to signal when the area isclear.7) The firing line must be kept shunted until the shot is fired.8) The connection must be carefully made; all wires must be well insulated and ingood repair.9) Blasting units must be able to deliver current in excess of that required to fire allcaps in the circuit. Use only series circuits.10) Test the blasting unit using the procedures recommended by the manufacturer todetermine that the machines can deliver power at the rated capacity. A daily testis recommended.11) The shooter will determine when he is ready on the shotpoint, but the shot signalmay be provided remotely from the recording instruments. If a remote device isused, the blasting machine must have at least one “dead man” type switch thatthe shooter must close to complete the circuit.12) Before a shot is fired, the person in charge must give a loud warning signal.When shooting near an electrical or any other utility (telephone, telegraph), and,regardless of voltage, the firing line must be anchored.5.1.6 Land Surface ShootingThe shooter and his crew must follow the guidelines outlined above and, in addition,follow those that appear below.1) The minimum safe shooting distance for surface shots will depend on the chargesize and terrain.2) Employees working in the shot area must wear hard hats and must be providedwith approved hearing and eye protection devices and must wear them at thetime of the detonation shot.3) The supervisor must monitor and enforce the use of Personal ProtectiveEquipment (PPE) provided to the employees.4) Employees must be thoroughly instructed in the hazards that exist in surfaceshooting techniques and a warning system should be established.5) Before any surface shooting begins, a plan must be made and approved bymanagement and client detailing:a) Type and amount of explosive used, including fire retardantcharacteristics.b) A pattern diagram.c) The method of operation.d) Safety requirements including sympathetic detonation prevention and safeshooting distances.e) Aircraft operations.Page 80 of 136