Komatsu WA70-7, Руководство по эксплуатации и обслуживанию

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Safety 2.2 General precautions
WA70-7 – VENAM02003
2-17
Working on loose ground

Avoid travelling or operating the machine too close to the
edge of cliffs, overhangs and deep ditches. The ground may
be weak in such areas. If the ground collapses under the
weight or vibration of the machine, there is a hazard that the
machine may fall or tip over. Remember that the soil is weak
in these areas after heavy rain, blasting, or earthquakes.

When working on slopes or near excavated ditches, there is
a hazard that the weight or vibration of the machine will
cause the soil to collapse. Before starting operations, take
necessary steps to ensure that the ground is safe to prevent
the machine from rolling over or falling.
Working near high-voltage cables
Do not travel or operate the machine near electric cables. There
is a hazard of electric shock, which may cause serious injury or
property damage. On jobsites that require the machine to work
close to electric cables, always proceed as follows.

Before starting work near electric cables, inform the local
power company about the work to be performed, and ask
them to take the necessary action.

Even approaching high-voltage cables may cause an elec-
tric shock that possibly results in severe burns or even
death. Always maintain the safety distance (see the table on
the right) between the machine and the electric cable. Con-
sult with the local power company about safe operating pro-
cedures before starting operations.

To prepare for any possible emergencies, wear rubber
shoes and gloves. Place a rubber sheet on top of the seat
and be careful not to touch the chassis with any exposed
part of your body.

Use a signalman to give warning if the machine approaches
too close to the electric cables.

When carrying out operations near high voltage cables, do
not let anyone come close to the machine.

To prevent electric shock, the operator must not leave the
operator's cab when the machine comes too close to or even
touches an electric cable, until the electricity has been
turned off.
Also, do not let any person approach the machine.
Nominal voltage
Safety
distance
up to 1000 V 1 m
over 1 kV up to 110 kV 3 m
over 110 kV up to 220 kV 4 m
over 220 kV up to 380 kV 5 m
in case of unknown nominal voltage 5 m