ISO standard · reference card
Claiming Part 2, 3 or 4 of ISO 3834? Decision flow for the personnel, procedure and management documents it names alongside the claim, and the records that satisfy them.
ISO 3834-5 is the least understood part of the series because it reads as a bibliography rather than a standard. It has almost no requirements of its own; it names the other documents — mostly other standards — that a manufacturer has to already be conforming to before a claim against ISO 3834-2, -3 or -4 is defensible.
That list changes with which part is declared: a comprehensive Part 2 claim pulls in the deepest set of supporting documents, while Part 3 or Part 4 draw on the same list at a lighter depth. Constant across all three is the set of welding-specific documents — welder qualification under ISO 9606-1 or ISO 14732, procedure qualification under the ISO 15607/15614 series, and coordination under ISO 14731 — because those sit outside what any quality-management certificate can evidence on its own.
The practical failure mode is treating a 3834 claim as a single certificate rather than a stack of them. An auditor working from this part checks the stack, not just the top certificate: is the coordinator actually named and current, are the welders qualified for the joints they are welding, is the procedure a real qualification record rather than an assumed one. Records that answer those questions per weld — not per audit cycle — are what turn the stack into something an auditor can sample rather than take on trust, and that is the layer Therness equipment produces underneath whichever part the claim is made against.
| Question | If yes | If no |
|---|---|---|
| Has a specific part — 2, 3 or 4 — already been declared for the claim? | That declared part sets the depth of the document list below; work from its specific requirements. | Settle the part first against the selection criteria in ISO 3834-1, then return to this list. |
| Does the declared scope include manual or partly mechanized welder qualification? | The ISO 9606 series is the qualification standard this part names for that work. | Check whether mechanized or automatic operators are in scope instead, covered by ISO 14732. |
| Does the organisation appoint welding coordination personnel? | ISO 14731 sets the tasks and responsibilities this part expects to be documented for them. | Reconsider — every declared part of the series expects coordination personnel to be identified. |
| Is a welding procedure being qualified from scratch, rather than adopted from a standard specification? | The ISO 15607 and ISO 15614 series are the qualification route this part names. | A standard welding procedure specification may be adopted instead, subject to the conditions the declared part sets. |
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 |
|---|---|---|
| A retrievable link between each weld and the qualified welder or operator the declared part's documents require | Weld identifier joined to welder ID, process values and timestamp in one export | WeldTrace |
| Evidence that welding coordination oversight was actually exercised on production, not only appointed on paper | Per-job thermal and parameter records a coordinator can review against the declared scope | 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.
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