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	Sand Dredge Operator (Spider No.1)
	Contact:  Palmer.Melvin@dol.gov

Home   1. 1. Start of Shift Activities   clock in   obtain PPE   Attend Pre-shift Meeting with ...    Travel to dock area   Put on life jacket and hard ha...    Check walkway and dock area   Board the boat   Travel to the dredge   Arrive at dredge   Board the dredge   Inspect between pontoons for o...    2. 2. Pre-Shift/Pre-op Dredge   Begin on starboard side   Check for slip/trip hazards   Check all handrails   Check service water pump and j...    Check electrical room   Check static oil tanks   Check hydraulic room   Check stern winch   inspect port side deck   climb steps to ladder at bow o...    travel down port side of ladde...    travel back up starboard side ...    examine steps to operators cab   Examine operator's cab   Complete pre-op report

Sand Dredge Operator (Spider No.1) 1. 1. Start of Shift Activities clock in enter code scan fingerprint obtain PPE hard hat life jacket safety goggles work boots work gloves hearing protection flashlight (during hours of darkness) Attend Pre-shift Meeting with plant manager Discuss today's production agenda Location of dredge Discuss safety issues Discuss maintenance issues Discuss problems Make contact with previous operator (if possible) Travel to dock area Put on life jacket and hard hat Check walkway and dock area ensure walkway/dock area is secure dock should not be floating away dock should be anchored ground under walkway should not be washed away check handrails check safety chains check for tripping hazards verify power is on to the dredge check transformer look for light on dredge Board the boat no smoking on the boat use 3-point contact pump off rain water check fuel check dock lines ensure oar/paddle is on boat check fire extinguisher When using small boat, obtain fire extinguisher from locker and place on boat Travel to the dredge start the outboard untie dock lines watch for any obstructions in water logs, loose pipe, debris, etc. Never pass over power cable Electrical shock hazard Note location and condition of pipe line kinks holes leaks floats Note location and condition of power cable floats continuous pvc pipe floating balls strain clamp on electric line at dredge Note location of swing cables Check cutter head from boat Check for broken teeth Check for missing teeth Check for wear to teeth worn teeth get shorter and shorter Check for lodged debris DO NOT POSITION YOURSELF UNDER THE CUTTER HEAD OR LADDER UNLESS THE SAFETY CHAINS HAVE BEEN INSTALLED Check the rock guard from the boat inspect for wear rock guard is located behind cutter hub in front of cutter tube protecting the cutter tube seal Rock guard will appear tight against the hub. As it wears, the space between the hub and the rock guard will increase. When this distance becomes 1/16th of an inch, replace or re-shim. check for debris fishing line check cutter tube for oil leak at rock guard Check the gatlin plate and suction mouth piece for intactness, wear and obstructions Arrive at dredge shut off outboard tie off boat tie off at bow and stern position boat to accommodate safe access to dredge Board the dredge unhook chain use 3-point contact to board dredge re-hook chain Inspect between pontoons for oil film on water 2. 2. Pre-Shift/Pre-op Dredge Begin on starboard side Check for slip/trip hazards Check all handrails loose cables broken, bent uprights openings are chained off toe boards in place Check service water pump and jet pump packing suction physical damage U-bolts along the ladder Check electrical room Check for breakers thrown Check for breakers locked out Check for trips/faults Benshaw starter Siemens dc drive Check air conditioning Check static oil tanks look at oil canisters mounted on ladder oil levels color of oil Check hydraulic room check for hydraulic leaks check hydraulic oil levels look for oil level between high and low marks Use site glass Add oil if needed ISO 32 or ISO 45 as needed check hydraulic oil temperature should be between 80 and 100 degrees F Never start cutter pump if oil temperature is less than 80 degrees If less than 80 degrees, start winch pump and put the system into oil heat mode check filter indicator should be in the green with unit not running drain water from air compressor tank visually examine pump motors for damage, missing bolts visually inspect hydraulic hose and valves Check stern winch Check for leaks Check wire rope for bird nesting Check winch mounting nuts/bolts If loose, re-tighten or replace with Grade 5 or better nuts/bolts Check fair leads inspect port side deck Check all handrails loose cables broken, bent uprights openings are chained off toe boards in place Check for slip/trip hazards climb steps to ladder at bow of dredge Use 3-point contact travel down port side of ladder to cutter Use 3-point contact check oil lines for leaks check water lines for leaks and bulges check swing cables for broken wires and flattening check for missing/loose nuts/bolts check suction pipe for physical damage, nuts/bolts in place check port-side swing block for wear check cutter gear for leaks, loose/missing bolts check cutter tubes for leaks, loose/missing bolts travel back up starboard side of ladder Use 3-point contact check starboard swing block for wear check starboard swing cable for broken wires, flattening Check suction pipe for physical damage, nuts/bolts in place inspect bolts on maximizer (loose, missing) This is an area where the bolts come loose quite often Check lift chains and lifting eyes on hoist block (upper and lower) check sheaves for wear check for loose pins/bent shackles Check ladder winch Check for leaks Check wire rope Check winch mounting nuts/bolts If loose, re-tighten or replace with Grade 5 or better nuts/bolts Check shackle dead end of cable check pin tightness/beckett Ensure clean out lid is in place and tight on suction side of dredge pump examine vacuum sensors for physical damage examine underwater pump check for missing nuts/bolts check for oil leaks shaft seals hose drain plug check for holes in pump shell Check 90-degree elbow for wear/holes Check the spool piece behind the 90-degree elbow for wear/holes examine torque tubes Check shim packs Check taper locks Check paint wear Warning of potential failure Check water leaks and cracks Check intermediate bearings and seals examine swing cable fair leads (port and starboard side) check for wear check for rotation Examine discharge pipe along the ladder Check for wear Check for leaks Check for clamp bolts Examine swing winches Check for leaks Check wire rope for bird nesting Check winch mounting nuts/bolts If loose, re-tighten or replace with Grade 5 or better nuts/bolts Check Lufkin gear box Check for leaks Check coupling Check oil level oil should be visible in site glass Should look like oil - not milk (milky color indicates water in oil) Check mounting nuts/bolts Check manual temperature gage Check pressure gage should be at zero Check wiring on electronic temperature gage Check dc drive motor check mounting nuts/bolts If loose, re-tighten or replace with Grade 5 or better nuts/bolts check temperature should be warm at all times to keep condensation from forming inside motor check bolts in coupling between gear box and motor check for unusual odors (burnt smell) Check dc blower motor check mounting nuts/bolts If loose, re-tighten or replace with Grade 5 or better nuts/bolts Inspect trunion pins ensure they are greased Check keeper bolt examine steps to operators cab Check for slip/trip hazards Examine operator's cab Keep neat, clean, orderly Check fire extinguisher Complete pre-op report

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U.S. Department of Labor | Mine Safety and Health Administration (MSHA) | 1100 Wilson Boulevard, 21st Floor | Arlington, VA 22209-3939
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