Mechanised welding :- Adjustment during welding possible
Automatic Welding :- Adjustment during welding not required
Qualify procedure using an appropriate part of EN ISO 1614 (formerly EN288),
or EN ISO 15613 (formerly EN288 Part 8) if the joint geometry is complex. A manual
weld may qualify a machine weld using the same welding process as mechanisation
should not significantly affect the mechanical properties of the weld,
however this will be subject to agreement between contracting parties.
The qualification of welding operators should use EN 1418
‘Approval of welding operators :- Fusion and Resistance Welding’.
This standard can also be used for testing the person who sets up the welding
machine if they have more influence on weld quality than the operator.
Operators that can’t adjust the equipment. i.e. Button pushers, don’t need
EN 1418 offers four different methods of qualification:-
Adopt EN ISO 15614 for testing, but approval range for
thickness and diameter based on capacity of equipment used.
A WPS must be followed.
Pre Production test to EN ISO 15613 or equivalent.
Must follow a WPS and approval range same as above
Production sampling, Set up equipment and sample test
production welds. Test method subject to agreement between
Function Test, On the job Job Knowledge test:-
Knowledge of welding
Parameters V welding results
Setting up equipment to WPS
Test equipment to WPS
Knowledge of malfunctions
In general a manually qualified PQR will support a WPS
for a Automatic/Machine weld. However addition or deletion of filler
will require re-qualification.
Welder performance is a grey area however we would argued
that the definition in QW 490 for a Welder and a Welding operator are different
therefore manual welders can’t operate mechanised welding without being
An operator does one test and he is qualified for all
thickness’ and diameters as per QW 360. However the approval range for
welding position is the same as manual welding.