44
GB/IE
and covers all mains-powered
devices in close proximity. The
fault-circuit interrupter must be
suitable for all types of current.
There must be means of rapid
electrical isolation of the welding
power source or the welding
circuit (e.g. emergency stop
device) which are easily accessi-
ble. When using welding devices
under electrically dangerous
conditions, the output voltage
of the welding device must be
greater than 113 volt when idling
(peak value). Based on the output
voltage this welding device may
be used in these conditions.
z
Welding in tight spaces
When welding in tight spaces
this may pose a hazard through
toxic gases (risk of suffocation). In
tight spaces you may only weld
if there are trained individuals in
the immediate vicinity who can
intervene if necessary. In this
case, before starting the welding
procedure, an expert must carry
out an assessment in order to
determine what steps are neces-
sary, in order to guarantee safety
at work and which precautionary
measures should be taken during
the actual welding procedure.
z
Total of open circuit
voltages
When more than one welding
power source is operated at the
same time, their open circuit
voltages may add up and lead to
an increased electrical hazard.
Welding power sources must be
connected in such a way that the
danger is minimised. The indi-
vidual welding power sources,
with their individual control units
and connections, must be clearly
marked, in order to be able to
identify which device belongs to
which welding power circuit.
z
Protective clothing
At work, the welder must
protect his/her whole body by
using appropriate clothing and
face protection against radia-
tions and burns. The following
steps must be observed:
– Wear protective clothing
prior to welding work.
– Wear gloves.
– Open windows to guarantee
air supply.
Safety instructions
