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controlling the rotary drive Into neutral and place the feed lever to the derrick, must be less than t (2 n� ong T P e e t in neutral Before leaving the vicinity of the dull, shut down the and lifeline must be strong enough to withstand the11tramir,y drill engine force of a 250 Ib (115 kg)weight (contained within the belt) fall ing 6 ft (2 m) ° Throwing ordropprng tools must not be permitted Carefully ° Use a safety device when climbing to a derrick platform that pass tools by hand between personnel or use a hoist line Do not consume alcoholic beverages,other depressants,orchemiis higher than 20 ft (6 m) °cal stimulants prior to starting work on a drill rigor while When on adernck platform,fasten the lifeline to the derrick onthe fob lust above the derrick platform and to a structural member that on th ° If it is necessary to drill within an enclosed area, make cer- isnot attached to the platform or to otherlines or support tain that exhaust fumes are conducted out of the area Exhaust ing the platform ;4 fumes are toxic and same cannot be detected by smell When first arriving at a derrick platform,immediately inspect Clean mud and grease from boots before stepping on a drill for broken members, loose connections, loose toots, or other a g loose materials platform and use hand holds and railings Watch for slippery ° Securely attach tools to the platform with safety lines Do not ' ground when stepping down from the platform attach a tool to a line attached to one's wast or any other part of h During freezing weather,do not touch any metal parts of the the body drill rig with exposed flesh Freezing of moist skin to metal can o When working on a derrick platform,do not guide dell rods occur almost instantaneously or pipe into racks or other supports by taking hold of a moving Dram all air and water lines and pumps when not in use it hoist line or a traveling block 4 ' freezing weather is expected ° Do not leave loose tools and similar items on the derrick plat- 4 ° Adequately coveror protect all unattended boreholes to pre- form or on structural members of the derrickf vent drill rig personnel,site visitors,or animals from stepping or ° A derrick platform over4 ft (12 m)above ground surface must �Y falling into the hole Cover,protect or backfill all open boreholes have toe boards and safety railing that are in goad condition according to local or state regulations on completion of the drill- ° Avoid being under rig workers on elevated platforms ing project whenever possible Never allow "horsing around" within the vicinity of the drill ng and tool and supply storage areas — even when the drill rig is shut dawn If heavy objects must be manually lifted, exercise care to (� "� avoid injury ° When using a ladder on a drill rig,face the ladder and grasp ° Before lifting an object without using a hoist,make sure that either the side rails or the rungs with both hands while ascend- the load is within your personal lifting capacity if it is too heavy, ing ordescending Do not attempt to use one or both hands to carry a tool while on a ladder Use a hoist line and a tool "bucket" ask for assistance or a safety hook to raise or lower hand tools ° Befoorere lifting a relatively heavy object,approach the object f i y by bending at the knees, keeping the back vertical and unarched ° Terminate drilling operations during an electrical storm and while obtaining a firm footing Grasp,the object firmly with both move the complete crew away from the drill rig hands and stand slowly and squarely while keeping the back ver tical and unarched In other words, perform the lifting with the I An elevated derrick platform should be used with the follow muscles in the legs, not with the muscles in the lower back ing precautions When working on a derrick platform, use a safety belt and if a heavy object must be moved some distance without the o aid of machinery,keep the back straight and unarched Change a lifeline The safety belt must be at least 4 in (100 mm) wide directions by moving the feet, not by twisting the body and should fit snugly but comfortably The lifeline,when attached ,I 18 -17- ``