The EN 1090 defines four different execution classes, each mandating its own specific set of requirements that need to be satisfied by the welding personnel.
The execution of jobs subject to building authority approval and the participation in tendering procedures require proof sufficient to confirm the professional qualification of personnel and must include qualified welding processes and documents detailing the use of the required technical equipment.
Businesses will be audited by an external inspector or an accredited test body such as GSI-SLV, TÜV or DEKRA. In addition to individual tests, the EN 1090 also sanctions standard welding processes as eligible for certification.
One key prerequisite that needs to be satisfied to obtain this certification is a factory production control system (FPC). The FPC must incorporate all processes that are essential for the production of steel and aluminium structures - from dimensioning to purchasing to corrosion protection to assembly.
All efforts to assure quality must be merged into a continuous and dedicated production monitoring system maintained by the manufacturer.
Separately available for each line of machines, the WPS package contains all welding procedure specifications necessary for regular applications – certified by the Teaching and Research Institute for Welding Technology (GSI-SLV) Fellbach – and are suitable for use at your own welding company.
Covering MIG-MAG Standard, MIG-MAG Pulse, the productivity-boosting SpeedPulse process as well as SpeedUp for quick and easy vertical seams, the specifications will pertain to the lion's share of standard procedures that need to be carried out at your company.
All certified standard welding processes including all relevant welding procedure specifications apply to the Lorch series P-Synergic, S, S-SpeedPulse & MicorMIG.
Important: Any approval of standard welding processes under EN 1090 always applies only to processes grouped under execution class EXC2 and only to materials up to and including strength class S355. All higher-level execution classes and strength classes require approval in accordance with DIN EN ISO 15613 or 15614-1!
Equally important: Do not use your Lorch equipment in combination with welding procedure specifications other than those included in the WPS packages we supply. Since every welding procedure qualification test is specific to the machine under testing, you will have to, at minimum, prove electrical and mechanical comparability to the auditor if you use welding procedure specifications with your Lorch machine that are supplied by third parties.
All owners of a WPS package are given online access to the entire WPQR test library documenting the welding process specifications contained in the corresponding WPS booklet. This also allows auditors to review the test results to the extent necessary for the completion of the audit. Demo login information is available and can be used to catch a glimpse of the portal and access a sample WPS.
Depending on the EXC, DIN EN 1090 requires the suitable implementation of DIN EN 3834, which says that essential parameters, such as welding current and welding voltage have to be monitored. Lorch Q-Data is a system that makes it a breeze to stay in compliance with the principal requirement of the EN 1090 - the documentation of the weld seams. One recorder per welding unit with a storage capacity that allows you to weld for at least a whole month. The package comes with software that clearly shows all of your welding activity. Better still, the system offers comprehensive connectivity as you can transfer data via USB, by Ethernet or wirelessly over your company's Wi-Fi network.
The use of this system will give you the transparency you need to analyse the welding results produced by your staff and to verify that they are in line with your company's specifications.