Mining DumpTruck(Dumpers) safety.

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'width' : 300, Mining DumpTruck(Dumpers) safety.

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haul trucks? dumpers are used at mine sites  quarry to

move material from one part of the mine

to another

most haul trucks dumpers are very large and can

be a hazard unless extra care is taken

around them

safe operations are accomplished by

following proven safety procedures at

the

mine before starting a shift driving a

haul truck or other equipment at the

mine the operator will do a

pre-operational inspection of the

vehicle to ensure that it is ready for

safe operation

equipment must be maintained to the

safety standards set by the mine site

and federal law

potential hazards associated with haul

trucks and roads include failure to

follow the traffic pattern traveling too

near the edge of a bench walking between

moving vehicles

excessive speed and approaching heavy

equipment without notifying the operator

visibility is difficult in the large

trucks

even though they are equipped with

mirrors and other safety devices there

are still blind spots for the driver

the larger the vehicle the larger the

blind spots

a very large haul truck may have a

40-foot blind spot to the front and a

70-foot blind spot on the right side

small houses could get lost in those

blind spots

communication

both verbal and visual is extremely

important for haul truck operators and

people working in the area where haul

trucks are operating one foreman was

fatally injured when a truck backed over

him while he was moving a water hose

he followed procedure by notifying the

haul truck driver by radio

but did not wait for an acknowledgment

the driver never got the radio message

check your mirrors and rear vision

camera if available when backing into

position

remember when going from forward to

reverse or reverse to forward

stop the truck before shifting

be sure your wheels are straight and not

articulated as you back into position

for loading

when the loader operator signals that

you are in position

put the gear selector in neutral and set

the parking brake

steep grades have been a contributing

factor in many haulage accidents

hall road grades should be compatible

with the capabilities of the equipment

using them

be sure you know the maximum grade and

speed your loaded truck can travel when

driving down long grades a general rule

of thumb is to drive down the grade in

the same gear you went up the grade

machines and conditions will be

different

so check your operator's manual for

specific information for your machine

always maintain a safe speed and

following distance for the conditions

consider the weather the condition of

the road visibility and traffic

always be aware of the stopping distance

required for your loaded truck

accelerate and decelerate smoothly

follow the dumping procedures used at

your mine

always check for people and traffic

around the dump area

if your dump area is at the edge of a

slope inspect the dump area for cracks

along the top edge overly steep slopes

and sunken or soft areas

the weight of your truck near an

unstable edge can be enough to break it

loose

rain melting snow and freezing and

thawing can weaken the dump area andlead to unstable slopes the dumping area

should be level or slope slightly upward

toward the edge

this will make it easier to control the

truck as you back up

cross windrows at an angle one wheel at

a time

to prevent jarring the load and the

truck

approach the dump site from left to

right when possible keep at least one truck width away from

the berm

if the berm or bumper blocks are not in

places

contact the appropriate supervisor

make your turn to back up into the dump

area at least one truck width away from

the dumping berm to avoid overloading

the dump edge

keep a safe distance between you and

other dumping trucks to help prevent

collisions or weakening the dump area

this is usually one truck length between

each truck

check your mirrors and rear vision

miror or

camera when backing into position

back up perpendicular or at a slight

angle to the dumping berm so the truck's

left rear tire approaches the berm first

this will help you keep the truck from

going through the berm

back up slowly and come to a gradual

stop at the dump point this prevents

overloading the truck's rear axle or

causing the edge of the dump area to

break away

stop just before the truck reaches the berm or bumper blocks

shift the truck into neutral and set the

appropriate breaks when dumping

the retarder break should not be used

when dumping

make sure the truck is clear of overhead

power lines people and other equipment

before raising the truck bed and dumping

the load

when the dump is approved

increase the rpm

raise the bed and dump the load

keep in mind that materials stuck in the truck bed can make the machine unstable

you may need to pull forward slowly as

the load is dumped completely lower the

truck bed before leaving the dump area

a body down indicator will come into

view when the bed is completely down

signal or honk before moving

for better vision turn left when

possible when you leave the dump area

if you part the truck during your shift

follow safe parking procedures

choose a safe location to park

set the parking brakes

place all controls in the off or shut

down position

and if you are on a slope turn the

wheels into the hill or use chocks when

leaving the truck for any reason

when using wheel chocks

always place them on the driver's entry

side

this will remind you to pick up the

chocks before returning to the cab

make sure you don't position the wheel chalk in a groove in the ground this

will reduce the effectiveness of the

machine,.thanks