SAFETY
Ⅰ
Connect the grounding cable to the workpiece as close as possible to the welding area. Cables
connected to the building framework away from the welding area increase the possibility of the welding
current passing through other circuits causing damage to for instance cranes and lifting chains.
GAS AND SAFEKEEPING OF GAS CYLINDERS.
Use only compressed gas for the required shielding operation and only operating regulators designed
for the gas used and pressure required. All hoses and fittings should fit the application and maintained in
good condition.
Cylinders should always be kept in an upright position, securely chained to an undercarriage or fixed
support.
Cylinders should be located:
- Away from collision areas or areas subject to physical damage.
- A safe distance from arc welding or cutting operations and other sources of heat, spark or flame.
Never allow the welding electrode, electrode holder or any electrically live part to touch a cylinder.
When opening the cylinder valve keep head and face away from the valve.
Valve protection caps should always be in place and hand tight except when the cylinder is connected
for use or in use.
1.3 The knowledge of Electric and Magnetic Fields
Electric current flowing through any conductor produces electric and magnetic fields (EMF). The
discussion on the topic of the effects of EMF on health is ongoing worldwide and up to the present no
evidence has been forthcoming proving negative effects on health. However, until the discussion is
closed, it would be wise to minimise exposure to EMF as far as possible and the following procedures
are suggested:
Route the electrode and ground cables together and, where possible, secure them with tape.
Keep all cables and welding machines as far away as possible from operators according to the actual
circumstance.
Power cables should never be coiled around body parts.
Connect the earth cable to the workpiece as close as possible to the area being welded.
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