Komatsu WA470-6 2006, Operation & Maintenance Manual

Page: 44 / 392

2.2 General precautions Safety
2-16
WA470-6H – VEAM946100
Safety at worksite
!
Before starting operations, thoroughly check the work area
for dangerous working conditions.
!
Inspect the surface of the soil in the working area and deter-
mine the optimum and safest procedure.
!
When carrying out operations near combustible materials
such as thatched roofs, dry leaves or dry grass, there is a
hazard of fire, so be careful when operating.
!
Determine the required safety measures against dangers on
public roads in co-operation with the owners, users, and
responsible authorities.
!
On sites where there are underground water pipes, gas
pipes, or conduits for high voltage cables, contact the
responsible supply company to determine the lines' posi-
tions. Ensure that these facilities will not be damaged.
!
When working with water or crossing sand banks, first check
the subsoil and depth and flow rate of the water. Ensure that
the permitted water depth will not be exceeded.
!
Take action to prevent unauthorized people from approach-
ing the jobsite.
Working on loose ground
!
Avoid travelling or operating your machine too close to the
edge of cliffs, overhangs and deep ditches. The ground may
be week in such areas. If the ground should collapse under
the weight of vibration of the machine, there is a hazard that
the machine may fall or tip over. Remember that the soil
after heavy rain or blasting or after earthquakes is weak in
these areas.
!
When working on embankments or near excavated ditches,
there is a hazard that the weight or vibration of the machine
will cause the soil of collapse. Before starting operations,
take steps to ensure that the ground is safe and to prevent
the machine from rolling over or falling.
GK032046