Distance To High Voltage Cables; Ensure Good Visibility; Ventilation For Enclosed Area - Komatsu PC18MR-3 Operation & Maintenance Manual

SAFETY

DISTANCE TO HIGH VOLTAGE CABLES

Do not travel or operate the machine near electric cables. There is
a hazard of electric shock, which may cause serious personal
injury or death. On jobsites where the machine may go close to
electric cables, always do as follows.
Before starting work near electric cables, inform the local power
company of the work to be performed, and ask them to take the
necessary action.
Even going close to high-voltage cables can cause electric
shock, which may cause serious burns or even death. Always
maintain a safe distance (see the table on the right) between the
machine and the electric cable. Check with the local power
company about safe operating procedure before starting
operations.
To prepare for any possible emergencies, wear rubber shoes
and gloves. Lay 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 near the machine.
If the machine should come too close or touch the electric cable,
to prevent electric shock, the operator should not leave the
operator's compartment until it has been confirmed that the
electricity has been shut off.
Also, do not let anyone near the machine.

ENSURE GOOD VISIBILITY

Check for any persons or obstacles in the area around the machine and check the conditions of the jobsite to
ensure that operations and travel can be carried out safely. Always do as follows.
When working in dark places, turn on the working lamp and front lamps installed to the machine, and set up
additional lighting in the work area if necessary.
Stop operations if the visibility is poor, such as in mist, snow, rain, or dust.

VENTILATION FOR ENCLOSED AREA

Exhaust fumes from the engine can kill.
If it is necessary to start the engine within an enclosed area, or
when handling fuel, flushing oil, or paint, open the doors and
windows to ensure that adequate ventilation is provided to
prevent gas poisoning.
GENERAL PRECAUTIONS
Voltage of Cables
100 V - 200 V
6,600 V
22,000 V
66,000 V
154,000 V
187,000 V
275,000 V
500,000 V
Safety Distance
Over 2 m (7 ft)
Over 2 m (7 ft)
Over 3 m (10 ft)
Over 4 m (14 ft)
Over 5 m (17 ft)
Over 6 m (20 ft)
Over 7 m (23 ft)
Over 11 m (36 ft)
2 - 17