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Active Contributor

Join Date: Apr 2010
Posts: 10

Welder Qualification

04/16/2010 2:16 AM

Dear All, can we qualify a welder with U.T., MPT, DPT instead of R.T.? if yes by which code?

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Anonymous Poster
#1

Re: welder qualification

04/16/2010 2:17 AM

this is getting ridiculous.

TELL US WHAT CODE YOU ARE TO FOLLOW, RATHER THAN YOU RANDOMLY CHOOSING WHAT SUITS YOUR NEEDS!!!!

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Anonymous Poster
#2
In reply to #1

Re: welder qualification

04/16/2010 2:24 AM

And to try and convince you how ridiculous your question is:

What are you welding? Structural, piping, vessels, pipeline, railroads, military vehicles, underwater, cranes, automotive, tanks, aerospace, boilers, ships/marine .....

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Active Contributor

Join Date: Apr 2010
Posts: 10
#6
In reply to #1

Re: welder qualification

04/22/2010 9:28 AM

API 1104 and 1" pipe welding

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Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#3

Re: welder qualification

04/16/2010 2:57 AM

And, while you're at it, what are UT, MPT, DPT, and RT? And why do some of these have periods and others not?

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Anonymous Poster
#4
In reply to #3

Re: welder qualification

04/16/2010 10:42 AM

Ornery Guest #1/2 here -

UT - Ultrasonic Testing

MPT - Magnetic Particle Testing (more properly abbreviated MT)

DPT - Dye Penetrant Testing ((more properly abbreviated PT)

RT - Radiographic Testing (X-ray)

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Anonymous Poster
#5

Re: Welder Qualification

04/17/2010 9:33 AM

As the above guest has correctly pointed out.

- Please decide on the code that you want the welder to be qualified for - ASME? API? DIN? EPV?...

- Structural, Pipeline, pressure Vessels ? ...

- Write the WPS and PQR for the code.

- Get the welder qualified for the same (WQR)

Once you have decided on the code (and please remember the welder qualified for ASME is not automatically qualified for API ... for example)

And the same goes on for the electrode, only that may feature in the PQR portion (since electrode is a part of main process variable)

Of course if it is from any of the standard reputed manufacturer, this portion you may skip (LE, ESAB,...) but that does not seem to be the case.

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Anonymous Poster (4); msurendra (1); Tornado (1)

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