[MW:34245] Re: Max allowable machining thickness for qualifying PQR

Jithin 

Query is not clear 

Pl. spell out clearly what is the  query  including background of the PQR in detail

Thanks 

Vishwas - IWE 

On Monday, May 29, 2023 at 8:04:36 AM UTC+5:30 JITHIN GOPINATH wrote:

Sir,

Can anyone advice me about the maximum allowable machining thickness for qualifying PQR.

For example I have a pipe with thickness 15.88 I want to reduce the thickness to 12.6 is that possible? If there any limitations for machining the thickness..

Please advise...

Regards

Jithin

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[MW:34244] Max allowable machining thickness for qualifying PQR

Sir,

Can anyone advice me about the maximum allowable machining thickness for qualifying PQR.

For example I have a pipe with thickness 15.88 I want to reduce the thickness to 12.6 is that possible? If there any limitations for machining the thickness..

Please advise...

Regards

Jithin

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Re: [MW:34243] WPS sample for stud welding

Refer AWS D1.1 forms 

You will get the format

Sent from my iPhone

On 25-May-2023, at 10:10 AM, JITHIN GOPINATH <2k9jithin@gmail.com> wrote:



Sir,

 Does anyone have the ARAMCO or non ARAMCO based WPS sample and  procedure for Stud welding. 

Regards,

Jithin

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[MW:34242] WPS sample for stud welding

Sir,

 Does anyone have the ARAMCO or non ARAMCO based WPS sample and  procedure for Stud welding. 

Regards,

Jithin

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Re: [MW:34241] Dissimilar chemical composition weld

Hi, 

Please refer ASME Sec I Non Mandatory Appendix - B Clause B-8

Thanks 

Parminder Singh

On Tue, May 23, 2023 at 8:27 AM Sintha Aidroos <iti.sintha@gmail.com> wrote:

Dear experts,

                Please advise about weld metal deposit  composition for base metal cuni 90/10 (UNS C 70600) and filler wire CuNi70/30 (UNS C 71500) combination of this material.We checked PMI at weld joint area but composition is not matching with ASME sec II part C .Can you give guidance for any PMI acceptance criteria?Here I attached PMI report for your review.

As per ASME sec II filler metal nickel percentage is 29-32 % and copper remaining.

 Regards

Aidroos      

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Re: [MW:34240] ER80S-G/ER80S-Ni1

Dear,

There is no Chemical composition specified in SFA  5.28   ER 80SG in accordance with ASME Sec.IIC and as long as it meets the other requirements of the Code, Manufacturer has the option to vary the chemical composition. Normally in ASME equipment, we get each Batch/lot of the Manufacturer's welding consumable certificate certified by an ASME AI that it belongs to a unique A-Number.

Similarly in Pipeline jobs, ER 80S-G is not specified in Filler metal grouping according to API 1104 2021 edition as per the snapshot below.

Since your PQR is qualified with ER80S-G, you can do production jobs with each batch of filler certified by Client.

But client requirement for Repair is to use ER 80SNi-1 which has a restricted chemical composition mostly restricting Ni less than 1% for sour service.

Hence you have to produce the Welding Manufacturer Consumable certificate for ER 80S-G  & ER80SNi-1(code reference) to the Client and assure that the chemical compositions of both Filler are matching or are within the Limits of ER80SNi-1 code requirement. 

Thanks & Regards

J.Gerald Jayakumar

On Tuesday, 23 May, 2023 at 01:20:34 pm IST, Baqer Shabbeer <engbaqer@gmail.com> wrote:

Dear experts,

I would appreciate your valuable response regarding the following inquiry.

The filler wire mentioned below is approved for our normal Gas Metal Arc Welding (GMAW) Welding Procedure Specification (WPS):

·        AWS Classification: ER80S-G

·        SFA Specification: 5.28

·        API 1104 Group: 5

·        Trade Name: PIPELINER 80Ni1

·        Base metal API 5L Gr. X65

However, for repair welding joints, our approved WPS (GMAW Welding) specifies the use of the following filler wire:

·        AWS Classification: ER80S-Ni1

·        SFA Specification: 5.28

·        API 1104 Group: 5

·        Trade Name: PIPELINER 80Ni1

·        Base metal API 5L Gr. X65

Unfortunately, my team used AWS Classification ER80S-G for the repair welding using Repair WPS.

I would like to know if this deviation is acceptable or if any corrective actions are necessary.

Thank you for your expertise and guidance.

Regards,

Baqer

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Re: [MW:34239] ER80S-G/ER80S-Ni1

What is the composition of 

ER80S-G

ER80S-Ni1

Send   MTCs  of both  the consumables

On Tue, May 23, 2023 at 1:20 PM Baqer Shabbeer <engbaqer@gmail.com> wrote:

Dear experts,

I would appreciate your valuable response regarding the following inquiry.

The filler wire mentioned below is approved for our normal Gas Metal Arc Welding (GMAW) Welding Procedure Specification (WPS):

·        AWS Classification: ER80S-G

·        SFA Specification: 5.28

·        API 1104 Group: 5

·        Trade Name: PIPELINER 80Ni1

·        Base metal API 5L Gr. X65

However, for repair welding joints, our approved WPS (GMAW Welding) specifies the use of the following filler wire:

·        AWS Classification: ER80S-Ni1

·        SFA Specification: 5.28

·        API 1104 Group: 5

·        Trade Name: PIPELINER 80Ni1

·        Base metal API 5L Gr. X65

Unfortunately, my team used AWS Classification ER80S-G for the repair welding using Repair WPS.

I would like to know if this deviation is acceptable or if any corrective actions are necessary.

Thank you for your expertise and guidance.

Regards,

Baqer

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[MW:34238] ER80S-G/ER80S-Ni1

Dear experts,

I would appreciate your valuable response regarding the following inquiry.

The filler wire mentioned below is approved for our normal Gas Metal Arc Welding (GMAW) Welding Procedure Specification (WPS):

·        AWS Classification: ER80S-G

·        SFA Specification: 5.28

·        API 1104 Group: 5

·        Trade Name: PIPELINER 80Ni1

·        Base metal API 5L Gr. X65

However, for repair welding joints, our approved WPS (GMAW Welding) specifies the use of the following filler wire:

·        AWS Classification: ER80S-Ni1

·        SFA Specification: 5.28

·        API 1104 Group: 5

·        Trade Name: PIPELINER 80Ni1

·        Base metal API 5L Gr. X65

Unfortunately, my team used AWS Classification ER80S-G for the repair welding using Repair WPS.

I would like to know if this deviation is acceptable or if any corrective actions are necessary.

Thank you for your expertise and guidance.

Regards,

Baqer

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Re: [MW:34237] SS GTAW Welding without Back purging.

For GTAW welding  -Single Vee - 33.4 OD, Full GTAW welding  - 

SS TO SS Welding   or Cr > 3 %  , backing gas is required to get sound root without any Oxidation.

The Oxygen is excluded by  purging Argon/Helium or other Inert mixtures  at root side to avoid Oxidation .

The root side is inaccessible  due to small diameter in your above case.

Backing gas shall be continued till 6mm deposit is welded . This is not a Code requirement but followed  as a good engineering practice across industries 

Thanks 

Vishwas 

On Monday, May 22, 2023 at 4:51:37 PM UTC+5:30 Anand Elankumaran wrote:

Hi Mr. Vishwas Keskar,

Single Vee butt weld  - Root/Hot/fill/cap-  full GTAW

pipe OD -33.4 mm

On Mon, May 22, 2023 at 7:47 AM Vishwas Keskar <vvkes...@gmail.com> wrote:

Are you intending to qualify PQR in 

Single Vee butt weld - No welding from Root side ?

Double Side Weld with back grinding DPT from root side ?

This will decide the PQR  purging requirement

Thanks

Vishwas

IWE 

Sent from my iPhone

On 22-May-2023, at 8:40 AM, Anand Elankumaran <email2...@gmail.com> wrote:



Dear experts,

Could you please check and advise the below query.

• Whether the back purging is a quality requirement or the ASME code is insisting on back purging on SS material while doing the GTAW process.
• Whether we can qualify SS -GTAW PQR without back purging or the ASME code does not allow doing PQR for austenitic steels without a back purge?
• Kindly advise how to do it without purging in SS GTAW Welding . Planning for PQR as well 

--

Thanks and Regards,

E. Anand,

Lead QA-QC,

Sohar,

Oman.

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Thanks and Regards,

E. Anand,

Lead QA-QC,

Sohar,

Oman.

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Re: [MW:34236] Dissimilar chemical composition weld

Hi,

1. Alloys are acceplable if the alloying elements are each within 10% of the specifled range of values. 

2. Welds with consumables that match, or nearly match, the base meal composilion shall be within +12.5% of the ranges allowed in ASME SEC IIC for each element.Chemical Composition of Material specs must be verifled/avallable.

thank you 

On Tue, 23 May 2023 at 6:57 AM Sintha Aidroos <iti.sintha@gmail.com> wrote:

Dear experts,

                Please advise about weld metal deposit  composition for base metal cuni 90/10 (UNS C 70600) and filler wire CuNi70/30 (UNS C 71500) combination of this material.We checked PMI at weld joint area but composition is not matching with ASME sec II part C .Can you give guidance for any PMI acceptance criteria?Here I attached PMI report for your review.

As per ASME sec II filler metal nickel percentage is 29-32 % and copper remaining.

 Regards

Aidroos      

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