ARCHIVED REPORTS XR0000618 - Laserfiche WebLink

Home Browse Search

Keep the cathead clean and free of rust,oil and grease. Rust o Do not leave a cathead unattended with the rop pped i should be removed from the cathead with a wire brush having on the drum 1 , a handle Position all other hoist lines to prevent contact with the a Check the cathead periodically,when the engine is not run operating cathead rope ping, for rope wear grooves If a rope groove forms to a depth ,I greater than 118 in (3 mm), replace the cathead o Always use a clean,dry,sound rope A wet or oily rope may "grab" the cathead and cause drill tools or other items to be rapidly hoisted to the top of the mast Should the rope "grab" the cathead or otherwise become tangled in the drum, release the rope and sound an appropriate alarm for all personnel, including the operator, to rapidly back away and stay clear If the rope"grabs"the cathead,and tools are hoisted to the sheaves at the top of the mast,the rope will,of ten !� break, releasing the tools If the rope does not break, stay,clear of the drift rig until the operator cautiously returns to turn oft the it drill rig engine and appropriate action is taken to release the tools Keep careful watch on the suspended tools and quickly 4 back away after turning off the engine Always protect the rope from contact with chemicals Chemicals can cause deterioration of the rope that may not be detected visibly i Never wrap the rope from the cathead(or any other rope,wire rope,orcable on the drill rig)around a hand,wrist,arm,foot,ankle, +I legs, or any other part of the body Always maintain a minimum of 18 inches of clearance between the operating hand and the cathead drum when driv- ing samplers, casing, or other tools with the cathead and rope method Be aware that the rope advances toward the cathead E with each hammer blow as the sampler or other drilling tool ;k advances into the ground Never operate a cathead(or perform any other task around di a drill rig) with loose, unbuttoned, or otherwise unfastened clothing or when wearing gloves with large cuffs or loose straps or Lacings o Do not use a rope that is any longer than necessary A rope that Is too long can form a ground loop or otherwise become en tangled with the operator's legs o When using the cathead and rope for driving or back-driving, I o Do not use more rope wraps than are required to hoist a make sure that all threaded connections are tight and stay as far load away as possible from the hammer impact point 4 -27- 28 F 1