Regarding Welder Qualification

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Mohit Aggarwal

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Mar 20, 2017, 1:16:29 PM3/20/17
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Dear Experts,

As per ASME Sec IX if for small diameter we have to done qualification e.g. 1/2" dia . Pipe we will have to take multiple specimen to cover the 150 mm length for RT, and also we Can't take specimen more than 4 nos.

I have query which dia we will have to consider for qualification of welder it's Outer dia. Or Inner dia of pipe for circumference length calculation because if we will consider inner dia for calculation then we will have to take more than 4 specimens and which violates the code .

Best Regards,
Mohit Aggarwal

dilintas

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Mar 22, 2017, 10:37:21 PM3/22/17
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Outside diameter 



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Mohit Aggarwal

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Mar 23, 2017, 2:32:07 AM3/23/17
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Dear Sir,

Kindly confirm the reference but when we done the root welding this is towards ID and how OD can be considered for calculation?

Regards,
Mohit Aggarwal

On Mar 23, 2017 8:07 AM, "dilintas" <dili...@gmail.com> wrote:
Outside diameter 



Sent from my Samsung Galaxy smartphone.

-------- Original message --------
From: Mohit Aggarwal <aggarwa...@gmail.com>
Date: 20/03/2017 10:12 (GMT+02:00)
To: materials-welding <materials-welding@googlegroups.com>
Subject: [MW:26234] Regarding Welder Qualification

Dear Experts,

As per ASME Sec IX if for small diameter we have to done qualification e.g. 1/2" dia . Pipe we will have to take multiple specimen to cover the 150 mm length for RT, and also we Can't take specimen more than 4 nos.

I have query which dia we will have to consider for qualification of welder it's Outer dia. Or Inner dia of pipe for circumference length calculation because if we will consider inner dia for calculation then we will have to take more than 4 specimens and which violates the code .

Best Regards,
Mohit Aggarwal

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Kannayeram Gnanapandithan

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Mar 23, 2017, 6:13:31 AM3/23/17
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Ref Table QW 452.4. As Dilinta said, it is only OD

THANKS & BEST REGARDS,
KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349

On Thu, Mar 23, 2017 at 11:59 AM, Mohit Aggarwal <aggarwa...@gmail.com> wrote:
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Dear Sir,

Kindly confirm the reference but when we done the root welding this is towards ID and how OD can be considered for calculation?

Regards,
Mohit Aggarwal
On Mar 23, 2017 8:07 AM, "dilintas" <dili...@gmail.com> wrote:
Outside diameter 



Sent from my Samsung Galaxy smartphone.

-------- Original message --------
From: Mohit Aggarwal <aggarwa...@gmail.com>
Date: 20/03/2017 10:12 (GMT+02:00)
To: materials-welding <materials-welding@googlegroups.com>
Subject: [MW:26234] Regarding Welder Qualification

Dear Experts,

As per ASME Sec IX if for small diameter we have to done qualification e.g. 1/2" dia . Pipe we will have to take multiple specimen to cover the 150 mm length for RT, and also we Can't take specimen more than 4 nos.

I have query which dia we will have to consider for qualification of welder it's Outer dia. Or Inner dia of pipe for circumference length calculation because if we will consider inner dia for calculation then we will have to take more than 4 specimens and which violates the code .

Best Regards,
Mohit Aggarwal

--
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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dilintas

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Mar 24, 2017, 12:31:38 AM3/24/17
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Always the OD




Sent from my Samsung Galaxy smartphone.

-------- Original message --------
From: Mohit Aggarwal <aggarwa...@gmail.com>
Date: 23/03/2017 08:29 (GMT+02:00)
To: materials-welding <material...@googlegroups.com>
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MESAB Engineering & Contracting Co

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Mar 24, 2017, 7:39:09 AM3/24/17
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Dear sir 

the RT film should min 150 mm length 
must calculation from out side the pipe wall , 
confirm to Mr Dainilta said .

Best Regards 
Saad Olimat 

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Raju Kandula

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Mar 24, 2017, 10:38:22 PM3/24/17
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ASME SEC IX QW302.2

the minimum length of coupon(s) to be examined
shall be 6 in. (150 mm) and shall include the entire weld
circumference for pipe(s), except that for small diameter
pipe, multiple coupons may be required, but the number
need not exceed four consecutively made test coupons

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