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r_1 177�' r-1, r_1 7-7, r-1, r-1, r_1 .17 r_1 r�l r-1, 1117-1 r_1 1117-1.(7_�, r_1 Do not begin drilling If tree limbs, unstable ground,'o site obstructions cause unsafe tool handling conditions. 9. Start-Up f31 Instruct all drill rig personnel and visitors to "stand clear" of the drill rig immediately prior to starting the engine. • Make sure all brakes are set,all gearboxes are in neutral,all hoist levers are disengaged,all hydraulic levers or air controls are in the correct positions, and the cathead rope is not on the cathead before starting a drill rig engine. • Start all engines according to the manufacturer's manual. 10. Drilling Operations Safety requires the attention and cooperation of every worker and site visitor. • Do not drive the drill rig from hole to hole with the mast (derrick) in the raised position. • Before raising the mast (derrick), look up to check for overhead obstructions. (Refer to Section 11 on Overhead and _ Buried Utilities.) • Before raising the mast(derrick),clear all drill rig personnel (with exception of the operator) and visitors from the areas immediately to the rear and the sides of the mast. Inform all drill rig personnel and visitors that the mast is being raised prior to c raising it. • Before the mast(derrick)of a drill rig is raised and drilling is begun,the drill rig must first be leveled and stabilized with level- ing jacks and/or solid cribbing.Relevel the drill rig if it settles after initial set up. lower the mast (derrick) only when the leveling jacks are down and do not raise the leveling jack pads until the • When breaking tool joints on the ground or on a drilling plat- mast (derrick) is lowered completely. form, position your hands so that your fingers will not be • Before starting drilling operations, secure, and/or lock the smashed between the wrench handle and the ground or the plat- mast (derrick) if required, according to the drill manufacturer's form if the wrench should slip or the tool joint suddenly let go. recommendations. • Do not stand on the elevated deck of a truck-mounted or all- 8. Clearing the Work Area terrain-mounted drill rig while the drill rig is in operation unless necessary for special tasks and the operator has been notified. Prior to drilling,adequately clear and level the site to accom- • Only operate a drill rig from the position of the controls. modate the drill rig and supplies and provide a safe working area Before leaving the area of the controls, shift the transmission 15 -16-