scope:

This standard specifies requirements for calibration, verification and validation of equipment used to: ? control of process variables during fabrication; and ? control of the properties of equipment used for welding or welding allied processes; where the resulting output cannot be readily or economically documented by subsequent monitoring, inspection and testing. This regards process variables influencing the fitness-for-purpose and in particular the safety of the fabricated product NOTE 1 The standard is based on the lists of process variables stated in standards for specification of welding procedures, in particular, but not exclusively on the ISO 15609 series of standards. Future revisions of these standards can result in addition or deletion of parameters considered necessary to specify. Some guidance is, in addition, given in annex B as regards requirements for calibration; verification and validation as part of acceptance testing of equipment used for welding or allied processes.