Welder qualification for Fillet weld following ASME IX

Sometime we need qualify for welder to carry out a Fillet weld only. Have some following reason to perform this test.

+ New welder who have not too much skill to perform 1 groove weld test

+ The job just require a Fillet test only ( welding support… )

+ Not require good welder with high skill

+ Saving the training time for welder

+ …

So, we need to qualify welder for Fillet weld.

As we know 1 welder is certified for grooves weld, it means he is certified for Fillet weld also.

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Now, how to do this test?

We will carry out these steps as below showing to qualify welder & make sure welder is enough skill to do job smoothly.

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1) Training welder:

– Welder is trained to know skill in performing the Welding Process.

– He practice welding in the particular position in which he is to be tested / qualified.

2) Code apply for testing:

In this case we will use ASME IX for qualification.

3) Certify by:

A third party what is recognized, will be required for certification these welder.

4) Welding procedure:

The approved WPS will be used for this test.

5) Preparing for testing:

  • Base metal & welding material to be followed Approved WPS.
  • Dimension of test coupon for Fillet welds in Plate:

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  • Dimension of test coupon for Fillet welds in Pipe:

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6) Test position:

It will depend on production requirement.

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7) Qualified diameter / thickness range of test coupon:

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8) Testing preformance:

Pls take note: stop & restart weld near the center.

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9) Acceptance criterial:

Pls refer to below link:

Welder qualification follow ASME IX- Part 1: Genenral

+ Visual:

+ Macro test:

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+ Fracture test:

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10) Expiration and Renewal of Qualification:

See below link:

Welder qualification follow ASME IX- Part 2: Essential Variable for Welder Qualification!

The end! Thanks!!!

Written by Thanh ( QC ) Nguyen Le.

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