This part of ISO 22827 specifies basic requirements and test methods for acceptance testing of high-power (average power more than 100 W), lamp-pumped or laser-diode-pumped Nd:YAG laser beam welding machines for seam welding with optical fibre delivery systems.

The requirements can also be applied as a part of verification testing as part of maintenance, as appropriate.

If modifications are made to a laser beam machine (rebuilding, repairs, modifications to the operating conditions, etc.) that have an effect on the acceptance testing, a repeat test may be necessary to cover the machine parameters affected by such modifications.

This part of ISO 22827 applies to the beam generating system, the optical delivery system and the devices for shielding and assist gases.

This part of ISO 22827 can be applied as a part of the acceptance conditions for the delivery of the optic laser beam welding cell.