3-9 TA9 &TA10 Dumper 0803-3 December 2010
Safety
b Gradients - continued
Crossing Gradients - Diagram C
Muddy, slippy ground conditions will adversely affect the
ascending and descending capabilities of the dumper.
However, these ground conditions can be even more dangerous
when crossing a gradient. Greater care must be taken when
crossing a gradient to prevent the machine sliding sideways out
of the operators control.
X (Maximum Crossing Gradient) = 20% (11º, 1 in 5)
Emergency Stopping on Slopes - (Running Out of Fuel)
Where possible park the machine at a slight angle across the
slope (less than 8.5º (15%), chock the wheels and refuel. If near
the bottom of the gradient the vehicle can be allowed to roll
backwards to the bottom of the gradient, however caution must
be exercised as the vehicle has no engine braking, and heavy
steering.
Responsibilities
Site management should identify possible dangers and make
arrangements to eliminate them.
Site management are responsible for planning driveways
around the site which will prevent the machine from
experiencing excessive slopes, soft ground or having to drive
over edges especially at an angle etc. The driveways should also
avoid any other possible dangers e.g. overhead cables, work
areas etc.
The operator should ensure the machine is driven correctly at all
times especially with regards to speed, overloading, using the
wrong machine for the intended task, driving dumpers with a
lift-skip in the raised position etc.
If these instructions are followed the risk of overturning is very
much reduced.
Overturning
If the machine should overturn and it is fitted with ROPS and
seat belt the risk of injury to the operator is reduced if they are
wearing the seat belt.
When the machine begins to overturn the operator should grip
the steering wheel firmly allowing the seat belt to restrain him/
her in the seat until the machine comes to rest. The operator
should not try to jump clear of the machine when it is
rolling.
b
Do Not Drive on Land which may cause the Dumper
to Exceed Maximum Gradient Limits Shown
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