CEN standard · reference card
Does EN 1090-2 apply to your structure, and which execution class sets the welding, NDT and coordinator requirements? Scope decision flow and the records that evidence it.
EN 1090-2 is an execution standard, not a design code. It states what has to happen on the shop floor and on site once a structure has already been designed and assigned an execution class — the welding procedures, the extent of nondestructive testing, and the welding coordination that class requires.
The recurring failure is treating “welded to EN 1090-2” as complete. The standard has four execution classes with materially different requirements, and the class is a design output, not something a fabricator picks for convenience. A specification naming the standard without the class has not actually specified anything measurable.
The second failure is scope drift: aluminium falls to EN 1090-3, and design questions belong to Eurocode 3, not this document.
Therness equipment sits underneath execution, not inside it: measured process records for structural steel welding, thermal evidence for the joints an execution class flags for closer inspection, and a per-weld record a notified body can review.
| Question | If yes | If no |
|---|---|---|
| Is the structure steel, CE-marked under EN 1090-1? | EN 1090-2 sets the execution requirements. | Aluminium goes to EN 1090-3; work outside CE marking follows whatever the contract names. |
| Has an execution class, EXC1 to EXC4, been assigned? | Use it to read off the welding, NDT and coordination requirements. | The designer assigns it through the execution specification and Eurocode 3; settle this before fabrication starts. |
| Is the WPS qualified to EN ISO 15614-1, or drawn from a permitted pre-qualified route? | Proceed with the class's other requirements. | Qualify the procedure first; an unqualified WPS invalidates the execution record. |
| Does the assigned class and material group require a named Welding Coordinator? | Name one under EN ISO 14731 before continuing; EXC2 and above always require it. | Check the project specification rather than assuming EXC1 is exempt in every case. |
Conformity is decided by inspection and testing against the criteria the standard and the contract set. The records below are evidence that the process was held where it was qualified; they support an inspection result, they never replace one.
| Requirement | Record produced | Source |
|---|---|---|
| Evidence the process stayed inside the qualified window for the assigned execution class | Per-weld voltage, current and wire feed records tied to the joint identifier | WeldTrace |
| Targeting the NDT extent a class requires at the joints most likely to need it | Continuous thermal record flagging per-weld anomalies ahead of inspection | HeatCam IR-C |
| A traceable record set a certification body can review at audit | Per-weld export with identifier, operator and timestamp | HeatCore AI |
Therness records what the machine actually delivered on every weld — parameters, thermal signature and a per-weld trail — so a conformity argument rests on measurements instead of recollection.
Progetto cofinanziato nell'ambito del PR Piemonte FSE+ 2021-2027,
Priorità I, Obiettivo Specifico a), Azione 4 – "Sostegno alla nascita delle start up"
