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Notes from the work of proving quality

Practical writing on welding qualification, NDT, inspection and the standards behind them — for the person who has to produce the document, not the person who already knows what it is called.

23 July 2026 EN 1090 and ISO 3834: which quality level at which execution class A common misreading is that ISO 3834 only kicks in at EXC2. It does not. EN 1090-2 requires it at every execution class — what changes is the level.