Additional Search Options

Subscribe to E-mail Updates

UNITED STATES DEPARTMENT OF LABOR

A-Z Index |  Site Map |  FAQs |  MSHA Forms |  Contact Us | 

	Home | Table of Contents | Overview Map | Icon Legend
	Dragline Operations Manitowoc 3000
	Contact:  Palmer.Melvin@dol.gov

Home   1. Pre-Op   work area examination   Pre Engine Start   Start Engine   Pre Shift Meeting   2. Set Up to Dig   examine the site   mount dragline   disengage travel dogs   engage master clutch   place boom at a proper angle f...    engage travel clutches   travel onto the mats   engage directional travel lock...    ensure dragline is level   3. Abnormal Conditions   weather   caved in bank   medical emergencies    malfunction of machine   fire   catastrophic machine failure   4. Shut Down Procedures   remove bucket out of water   disengage travel locks   check boom angle   adjust boom angle for travel   swing to the direction of trav...    move dragline into stable posi...    swing dragline to position for...    position bucket on ground or c...    engage all brakes   disengage master clutch   allow engine to cool down at i...    shut off engine   dismount   engage travel locks   drain air tank   lubricate to manufacturer's sp...    re-examine site   5. Operation   re-examine conditions   determine the depth of the cut   start working the cut   monitor ground conditions cont...    monitor the dragline   build and monitor stockpile   prepare for shutdown

Dragline Operations Manitowoc 3000 1. Pre-Op work area examination perform self assessment check mental condition check physical condition use personal protection equipment Approach Inspection check crawlers check wire ropes Check Sheaves Check Pendant Lines and boom Check Ground Conditions check for overhead & underground powerlines and utilities Check for loose, missing or broken parts check weather conditions check for fresh fluid leaks (coolant, oil, etc) check for signs of unknown activity check for human or vehicle tracks determine if maintenance work had been done or unauthorized activities check glass Daily Inspection check crawlers Cracked or welded pads check keeper pins which are located at the end of the hinge pin between the pads. check for kinks or loose travel chains check the sprockets and rollers for wear, alignment, and/or missing teeth check for safe access (clean crawler track if needed) check car body check for cracked or welded parts check for fluid leaks check for and clean off excess dirt and grease check for cracks open drains for oil sumps to drain water check house rollers check for wear, spider cracks, scaling, flat spots, and bearing pieces check for the lack of lubrication close air tank from the prior shift check if wire rope is spooling straight on drums check condition of wire rope refer to rope retirement criteria 30 CFR Subpart R check fairlead check rollers, sheaves, alignment, lubrication fittings, mounting bolts, keepers check condition of crane mats if used check the condition of the sheet metal check entire cab and the condition of door and track assembly check grab iron check for obstructions in the tail swing area Pre Engine Start Open the door Check fire extinguisher Check fluid levels diesel fuel engine oil coolant chain cases sump oil air compressor oil level gasoline level alcohol evaporator Check belts for tension engine air compresser sump pump (gear lube) kuno filter needs a full turn every day Check chain guard Check fan shroud Check air compressor belt guard Check drum guards boom hoist hoist line dragline Check for lock out / tag out as applies Check control levers are in neutral position Hoist, Boom, Swing & Master Clutch Check master clutch is disengaged Adjust throttle Make sure it is not full throttle Start Engine turn key and start engine check for leaks permit/allow air pressure to build up to full operating pressure check oil pressure check for operators manual and load charts bring engine temperature up to a safe operating temperature engage master clutch maintain a low idle prior to slowly engaging only after operating temperatures have been reached check boom, hoist, and drag brakes and clutches Check boom first Boom up while holding brake on Boom down while lightly applying brake to warm it up Dry brake lining to prevent slippage lower boom to the ground swing to side of bucket placing boom on cribbing to reduce strain on boom pendant lines set brakes and place levers in neutral position never leave the seat with the master clutch engaged !! disengage master clutch inspect boom bent, broken, or missing lacing, and damaged cords bolts & pin connections keepers attachments rollers and wire rope guides sheaves (guards, chips, cracks, wear, damage, lubrication, bearings, alignment, & missing sheave) boom angle indicator (free moving & correct calibration) pendant lines (broken wires, pins and keepers are intact, rust, wear, lubrication, and defects) equalizer (pins and keepers are intact & check sheaves) boom hoist wire rope (broken wires & strands, rust, wear, lubrication, & other defects) boom stops gantry (pins, keepers, sheaves, lubrication, and other damage) inspect bucket teeth hoist chains above and below the spreader bar spreader bar hoist clevis, pins, and keepers dump (trip) sheave assembly trunions drag yokes (frog) drag hitch clevises all other components raise the boom set to desired boom angle dry the hoist and drag brakes run wire rope up and down with the brakes lightly applied to dry the brakes raise bucket swing machine side to side to dry the swing clutches Pre Shift Meeting listen to supervisor instructions plan daily operations traffic patterns haul road maintenance personal protective equipment material blending discuss any change in conditions participate in daily safety meeting 2. Set Up to Dig examine the site mats and cribbing needed travel route soil conditions any changes from previous shift re-check swing radius mount dragline discuss mounting and dismounting safety disengage travel dogs If located on a hill, do not disengage travel dogs until ready to travel. engage master clutch place boom at a proper angle for travel engage travel clutches ensure the drive chains are located away from the digging end travel onto the mats center dragline on mats make sure the idlers are not at the seam of two mats chock/block the tracks in front of dragline engage directional travel lock to prevent over travel toward excavation site ensure dragline is level 3. Abnormal Conditions weather be aware of company policy lightning wind precipitation caved in bank medical emergencies basic first aid procedures be aware of company communication system and policy know where first aid kits are located malfunction of machine fire catastrophic machine failure 4. Shut Down Procedures remove bucket out of water disengage travel locks check boom angle adjust boom angle for travel swing to the direction of travel move dragline into stable position swing dragline to position for safe cab access position bucket on ground or crib blocks engage all brakes disengage master clutch never leave the seat without disengaging the master clutch! allow engine to cool down at idle speed shut off engine dismount engage travel locks drain air tank lubricate to manufacturer's specifications re-examine site 5. Operation re-examine conditions determine the depth of the cut How to: lower bucket to the bottom raise bucket slightly gingerly sweep back and forth to determine depth and location of material test various radius start working the cut dig within the front quadrant DO NOT UNDERCUT!! monitor ground conditions continuously while digging monitor the dragline engine gauges listen for abnormal sounds bucket conditions wire rope condition boom connections wire rope alignment sheaves fairleads build and monitor stockpile slope for proper drainage ensure proper placement prepare for shutdown

FAQs |  Freedom of Information Act |  Privacy & Security Statement |  Disclaimers |  Customer Survey |  Online Filing Help Desk  |  Contact Us

U.S. Department of Labor | Mine Safety and Health Administration (MSHA) | 1100 Wilson Boulevard, 21st Floor | Arlington, VA 22209-3939
www.msha.gov | Telephone: (202) 693-9400 | Fax-on-demand: (202) 693-9401