Coded Welder (EN ISO 9606) case studies
Coded Welder (EN ISO 9606) · Put your knowledge to work in context.
The Coded Welder qualification under EN ISO 9606 is the European framework through which a welder demonstrates, on a physical test piece, that they can produce sound welds to a defined procedure. It is aimed at working welders in fabrication, construction, pipework, pressure equipment and repair, and it is normally pursued because an employer, a client specification or a notified body requires documented proof of competence. The Coded Welder (EN ISO 9606) case studies are 5 cases and about 2,368 words.
1Thickness Range After a Single-Sided Butt Weld
A fabricator qualifies a welder under EN ISO 9606-1 using a mechanised 135 (MAG) test piece welded in a single pass from one side only, with a nominal plate thickness of 10 mm. The test piece passes visual, radiographic and bend testing.
501 words, about 3 min2Material Group Mismatch on a Revalidation Request
A welder holds a valid EN ISO 9606-1 qualification obtained on a 12 mm plate in material group 8 (stainless steel), process 141 (TIG), welded from both sides, tested by bend and radiography. The certificate is approaching the end of its period of validity.
501 words, about 3 min3Bend Test Failures on an Otherwise Sound Weld
A 10 mm butt test piece in material group 1, process 111 (covered electrode), welded in the vertical-up position (PF), passes visual examination with no relevant imperfections. Radiography shows no unacceptable indications.
450 words, about 2 min4Position Coverage for a Pipe Welder
A welder qualifies on a pipe test piece, process 141, material group 1, outside diameter 60.3 mm, wall thickness 5 mm, welded in the fixed horizontal (PC) position with the pipe axis horizontal and the weld made around the circumference without rotating the pipe. Production now needs this welder for: (a) the same pipe size welded in the fixed vertical (PF) position (pipe axis vertical, welding upwards), and (b) a 114 mm outside diameter pipe of the same wall thickness welded in the PC position.
449 words, about 2 min5Certificate Scope Versus the Welder's Actual Production Task
A welder's EN ISO 9606-1 certificate, issued by the employer's examiner, lists: process 135, material group 1, butt weld, single side, plate thickness 8 mm (qualified 8–16 mm), position PA (flat). The welder is assigned to a production job: 6 mm plate, process 135, group 1, butt weld, welded in the PB (horizontal-vertical) position, with a permanent ceramic backing left in place.
467 words, about 2 min