ISO standard · reference card
Does ISO 9606-1 cover your welder for this job? Scope decision flow for the steel welder-qualification standard, the codes it sits beside, and the records a range-of-approval check depends on.
ISO 9606-1 qualifies a welder, not a person’s general competence — a certificate reads as broader than it is. A pass on one test piece establishes a range of approval, a band of thickness, diameter, position and other essential variables the standard extends the result across, and work outside that band is outside the qualification even when the welder could plainly perform it.
The scope boundary that trips manufacturers up first is process type: manual and partly mechanized steel welding sits here, but a mechanized or automatic cell routes to ISO 14732 instead, and a different base metal routes to a different part of the same series. The second boundary is time — continuity has to be confirmed at the interval the standard sets, and a lapsed confirmation lapses the qualification regardless of how much welding the person did in the meantime. The full guide to range of approval covers both boundaries and the retest triggers between them.
Where ISO 3834-2 requires qualified personnel, this standard is the route that satisfies it, and ISO 14731 is the coordination layer that checks the match between welder and job before the arc starts, not after a weld already exists outside its qualified range. Therness equipment ties every weld to the welder who made it and the values the process actually ran at, so the range-of-approval check has a real record to test against instead of a job traveller taken on trust.
| Question | If yes | If no |
|---|---|---|
| Is the welder performing manual or partly mechanized fusion welding of steel? | ISO 9606-1 is the applicable qualification standard. | A mechanized or automatic process routes to ISO 14732 instead; a different base metal routes to the matching part of ISO 9606. |
| Does the job fall inside the range of approval the test piece supports — thickness, diameter, position and the other essential variables? | The existing certificate covers the work. | A new qualification test, or an extension where the standard allows one, is needed before the welder is assigned to it. |
| Has the welder's continuity been confirmed at the interval the standard sets? | The qualification remains current. | The certificate is treated as lapsed until continuity is re-established by the route the standard defines. |
| Does the construction code or contract require a route other than ISO 9606-1, such as ASME Section IX? | Follow the named route instead; the two schemes are not interchangeable without an explicit equivalence statement. | ISO 9606-1 governs the qualification. |
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 |
|---|---|---|
| Proof a production weld was made inside the welder's current range of approval | Welder ID joined to each weld record alongside the measured process values | WeldTrace |
| A continuity trail an auditor can check against the standard's confirmation interval | Per-weld timestamp and process record exported per welder over time | HeatCore AI |
| Position and joint evidence supporting the range of approval a job actually used | Continuous thermal record of the seam tied to the weld identifier | HeatCam IR-C |
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.
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