scope:

This standard specifies requirements to calibration, verification and validation of equipment used for: - control of process variables during fabrication, or - 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. Some guidance is, in addition, given in annex B as regards requirements to calibration; verification and validation as part of acceptance testing of equipment used for welding or allied processes. Requirements to calibration, verification and validation as part of inspection, testing, non-destructive testing or measuring of final welded products performed in order to verify product compliance are outside the scope of the present standard. The subject of the standard is limited to calibration, verification and validation of equipment after installation, as part of the workshops' schemes for maintenance and/or operation.