Safety and Accident Prevention 2
TW9 15
Before commencing work on the hydraulic system,
the operating pressure, pilot pressure, back
pressure and pressure inside the tank must be let
off.
Alterations, such as welding of the hydraulic
system, are only to be undertaken with the
manufacturer’s permission.
Swallowing lubricants as well as long and repeated
skin contact can be hazardous to health and
should therefore be avoided. When used properly,
there is no particular danger to health. The safety
specification sheets from the mineral companies
must be observed.
Only the hoses specified by the manufacturer shall
be used.
Hydraulic hoses must be routed and assembled by
expert personnel.
In the vicinity of fuel or batteries, smoking and
naked flames are prohibited.
2.17 Recovery, loading, transportation
Earth-moving machines are only to be loaded onto
recovery vehicles if adequate towing vehicles are
used.
The tow fixing points specified by the manufacturer
must be employed.
For loading and transportation, earth-moving
machines and all necessary auxiliary equipment
must be secured against unwanted movement.
The traveling gear and crawler unit of earth-moving
machines must be sufficiently cleaned of mud,
snow and ice to ensure that ramps can be driven
up without risk of slipping.
When transporting the earth-moving machine on
trucks, flatbed trailers, or by rail, it must be
sufficiently secured with chocks and by attachment
to the lashing points.
Before setting off, the route to be taken must be
examined to determine whether the roads are wide
enough, entrances and passages under bridges
are large enough and that roads and bridges have
sufficient carrying capacity.
2.18 Monitoring and inspections
The machine must be submitted to a general
inspection according to the existing UVV-
regulations (Accident Prevention Regulations).
This inspection must be carried out by an expert
(e.g. machine engineer or machine foreman):
• before the machine is put into operation for the
first time and before the machine is again put
into operation after essential modifications have
been made
• at least once a year
• in the meantime, according to operating
conditions and local environments.
The results of this inspection have to be recorded
in writing and this record kept until the next
inspection takes place.
Prior to every work shift, the machine operator
must check the earth-moving machine according to
the inspection and maintenance plan.
Hydraulic hoses must be replaced as soon as the
following damage is recognized:
• Damage to the outer layer which reaches the
intermediate layer,
• Embrittled patches on the outer layer,
• Deformations when under pressure or without
pressure which differ from the original shape of
the installed hose,
• Leaks,
• Damage to hose fittings or to the connection
between the fitting and the hose.
The coolant level may only be checked after the
engine has cooled down; the cap must be turned
carefully in order to let off excess pressure.
Prior to operations, the machine operator must
check the function of the safety devices.
The machine operator must advise the supervisor
immediately - and his replacement, if there is a
change of operator - with regard to any
shortcomings.
In the event of shortcomings which jeopardize the
operating safety of the earth-moving machine, it is
not to be used until these have been eliminated.
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