Safety, Operation and Maintenance Manual-September 30, 2019
2-55
2.6.7 Avoiding tipping
Fig.2-99
WARNING
Risk of equipment tipping over!
If there is insufficient stability, the
equipment can tilt and fall over. This can
result in serious or fatal injuries to
persons in the vicinity of the equipment.
Always ensure the stability of the
equipment. If there are any doubts as to
the stability of the equipment, stop work
immediately.
Tipping may occur in the following conditions:
• The drilling rig is traveling on unstable or
sloping grounds, including backfill, slope,
suspended land, ravines, drainage,
landslides, embankment.
Fig.2-100
• The winch is overloaded.
Fig.2-101
• Sudden acceleration or deceleration in
moving, sudden upper carriage swing and
whole vehicle rotation.
When the drilling rig is at its normal traveling
position, the operator shall look towards the
uphill direction when traveling up a slope. He
shall look towards the downhill direction when
traveling down a slope. Such requirement is
aimed to keep the rig's centre of gravity as far
back as possible to ensure that sudden move-
ment of centre of gravity does not lead to the
rig's instability.
SR400R Rotary Drilling Rig
Safety
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