2 Safety and Prevention of Accidents
TC29
10
2.10 Guides
Guides must be easily recognizable, e.g. by means
of reflective clothing. They must remain within the
machine operator’s field of vision.
While guiding the machine, guides shall not be
given other jobs which may distract them from their
task.
2.11 Danger of falling objects
Earth-moving machines are only to be used where
there is a danger of falling objects when the
operator’s stand has a canopy (FOPS). A front
guard must be employed if there is a risk of
materials breaking into the cab.
In front of walls e.g. of stacked materials, earth-
moving machines must be positioned and operated
in such a way that the driver's seat and entry to the
driver's seat are not situated on the side facing the
wall.
Demolition work is only to be performed by earth-
moving machines where there is no danger to
persons and if the machine is equipped with
canopy, cab-mounted front guard and the
appropriate work implement.
See regulations book "Demolition work" (ZH 1/614)
published by the Tiefbau-Berufsgenossenschaft
(the employer’s liability insurance association).
2.12 Working in the vicinity of underground
power lines
Before commencing excavating work using earth-
moving machines, it must be determined whether
any underground power lines are present in the
intended working zone which may present a
danger to persons.
If underground power lines are present, their exact
position and course must be determined in
consultation with the proprietor or operator of the
lines, and the necessary safety precautions
decided and implemented.
The course of power lines in the work area must be
clearly marked, under supervision, before
commencing any excavation work. If the position of
lines cannot be determined, search ditches must
be dug - manually, if need be.
If underground power lines are encountered
unexpectedly or they or their protective covers are
damaged, the machine operator must discontinue
work immediately and notify the supervisor.
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