Re: BS EN 9606-1 - WQT (Parent Material Group)

[AKHIL MENON]

Good Afternoon,

According to EN 9606-1,  Parent material groups are "Non-Essential", But need to record in the Welder Certificate as per Code Requirement.

There is a statement " Welding with a filler material in one group qualifies the welder for welding with all other filler materials within the same group, as well as other groups, listed in Table 3, and welding on parent materials from groups 1 to 11".(@ Page 10).

1.My question is Group 1 Cover all Group 1 to 11?

Thanks & Best Regards,

AKHIL           

SAC Accredited Welding Inspector (Cert. No: 316877/2)

SAC Accredited - Independent Testing Agency (ITA)
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[Chetan Kapadia]

Dear Akhil,

Your statement from P1 to P11 is true for welders ability to weld & capable of having correct root penetration as well as fusion.

but you need supporting qualified PQR established with correct consumables & Amp. Voltage Heat input.

Hope my answer satisfies your query.

Regards,

Chetan Kapadia 

Kapadia Consultants 

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[Kristian Lund Jepsen]

EN 9606-1 qualifies on the filler material (the FM group).

In most cases one FM group, for example FM1 will qualify to other FM groups – for FM1 also for FM2. See table 3 in 9606-1.

 

In theory FM1 filler material may be used for all parent material groups (1 – 11 as per ISO 15608).

But you will never use a welder qualified to FM1 filler material (for carbon steel) to weld parent material group 8 (austenitic stainless steel).

 

The qualification test will be based on a qualified WPS – or a pWPS (that is also allowed).

The welder, when using the issued certificate, shall weld within the range of qualifications for his certificate. So he cannot weld to a WPS qualified to for example group 8.1.

 

Med venlig hilsen Kristian Lund Jepsen M. Sc. (Mech. Eng.) Senior Chief Consultant 1101248 - Mechanical   D +45 51 61 73 24 M +45 51 61 73 24 k...@ramboll.com _________________________________ Rambøll Bavnehøjvej 5 6700 Esbjerg https://dk.ramboll.com Rambøll Danmark A/S, CVR NR. 35128417 Hjemsted: Hannemanns Allé 53, 2300 København S

 

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