Post on 12-Jan-2016
Dredges
& Barges
Dredges
& Barges
DredgesDredges
DredgesDredgesUsed in different mining
applicationsSand & gravel are most
commonly dredged materialsOther minerals also mined with
dredges
Dredge TypesDredge TypesSuction pumpsWith or without cutter headsClamshells & draglinesBucket ladders
Mining MethodsMining MethodsSuction material as slurry into
pipe beneath waterSlurry passes through pipe,
separated from water & transported to shore by various methods
Mining MethodsMining MethodsClamshells & draglines scoop
material & load on belt or barge
Dredge HazardsDredge HazardsDrowningSlips & fallsElectrocutionHigh pressure pumps & pipesWelding & cuttingMaterials handlingPinch points
Remove Trip HazardsRemove Trip Hazards
Electrical Hazards Around Water
Electrical Hazards Around Water
Material LoadingMaterial Loading
Material LoadingMaterial LoadingEspecially careful when loading
materials.Never go under suspended
loads
Other HazardsOther HazardsCablesHigh windsLightningFogExcessive noise
Hearing ProtectionHearing Protection
Diesel Engines
PPEPPELife jacketsSteel-toed boots with slip-
resistant solesSafety glasses or goggles Hard hat
Stored & MaintainedStored & Maintained
HardhatsHardhats
HardhatsHardhatsRequired for everyone on
board If you don’t have it on, it’s
unlikely you will go get it when needed
DrowningDrowningAccount for majority of dredge
fatalities
Life JacketsLife Jackets
Life JacketsLife JacketsWear at all times while working
on or around small boats, barges, dredges & tugboats
Jackets that keep head above water preferred
Slip & Trip HazardsSlip & Trip Hazardsmany slip & trip hazards Most serious is being caught
between barge, dock or processing plant
Trip HazardsTrip HazardsOil, grease, water, ice, loose
sand & gravelCables & unsecured linesGood housekeeping reduces
danger
Electricity & WaterElectricity & WaterCareful around electrical
installations on dredgesProvide & maintain insulation &
groundingLockout
Power CablesPower CablesFloating cables & power cables
carried on pipelines properly insulated & protected
Mechanical bonding & grounding maintained
Electrical SafetyElectrical SafetyDredges with on board power
plants differ from those with shore power because vessels’ hull used as neutral or ground return
Employee unfamiliar with marine electrical circuitry not allowed to work equipment
Light Bulbs GuardedLight Bulbs Guarded
Electrical SafetyElectrical SafetyWeatherproof lamp socketsTemporary lights guarded, with
heavy duty cords & grounded
Pipes & PumpsPipes & PumpsHigh pressure pipes & pumps
isolated & bled before any work performed
System secured, blinded, locked & tagged until work completed
Welding & CuttingWelding & CuttingPay particular attention to
surroundingsWelded objects tested to
determine if water, flammable liquids or vapors present
Moving Heavy ObjectsMoving Heavy Objects
Moving Heavy ObjectsMoving Heavy ObjectsUse hoists or get help to
handle heavy objectsRigging contains pinch points
& done by experienced people
Wire RopeWire Rope
Wire RopeWire RopeBroken cables can whip or
backlash violently
Inspect Wire RopeInspect Wire Rope
Inspect Wire RopeInspect Wire Rope
Guard Drum & SheaveGuard Drum & Sheave
Dredge FiresDredge Fires
Dredge FiresDredge FiresExtremely dangerousGood housekeepingKeep oil, grease, waste rags,
flammables & combustibles in covered containers away from ignition sources
Fire PreventionFire PreventionStore paints, thinners &
solvents in fire cabinetsCheck for fire after welding &
cutting
Fire ExtinguishersFire Extinguishers Inspected & readily available.Trained in fire suppression
techniques
WeatherWeatherHigh winds & lightningStop work & go ashoreCreate unstable work platforms Fog & visibility
Wear Life JacketWear Life Jacket
Rescue Equipment Maintained & Accessible
Rescue Equipment Maintained & Accessible
Working AloneWorking Alone
Working AloneWorking AloneNot work alone in hazardous
areas unless they can communicate, be seen or heard by others
BargesBarges
HazardsHazardsDrowningFalling overboardSlips & fallsCrushed between barge &
dredge, dock or floating plant
PPEPPELife jacketsSteel-toed boots with slip
resistant solesSafety glasses or gogglesHardhat
Slips & FallsSlips & Falls
Trips & FallsTrips & Falls
CablesCablesPay attention around lines &
cables under tension – they can break
Loading HazardsLoading HazardsSlips & fallsRope burns from being caught
in linesCrushed between barge &
dredgeDrowningCaught in conveyor
Unloading hazardsUnloading hazardsUnloading equipment has
pinch points & blind spotsStay out of machine swing
radiusFalling material
Tow BoatsTow Boats
Tow Boat HazardsTow Boat HazardsSlips & fallsRope burns from being caught
in linesCrushed between boat & bargeDrowningExcessive noise