Wednesday, February 28, 2018

Re: [MW:27403] Re: If a welder is qualified with SS (Stainless Steel) GTAW, He can weld CS Carbon steel GTAW?

Hi, 
Cannot weld refer asme sec-9 ed.2017, table qw-356, backing gas deletion is essential, and refer qw-351 to confirm.

Regards, 
Bala. R

On 28 Feb 2018 1:43 pm, "chandrakant mohikar" <crmohikar@gmail.com> wrote:
Coceptually, though he is eligible, he has to be qualified / PQR etc for specific welding WPS etc. 

Chandrakant Mohikar
(Ex. PDO CSR (Head - HSSE & QA)

On 28 Feb 2018 11:39 a.m., "Welding and material" <koswaraabi@gmail.com> wrote:
if we talked about F no on the ASME IX F no associated to A no
for P no and F no SS GTAW Qualified for CS, but we must see para 404.15 then see QW 432 and see Note 1 and then going to QW 433 for A no thanks

Pada Sabtu, 24 Februari 2018 17.03.47 UTC+7, PK menulis:
Dear Sir,

If a welder is qualified with SS (Stainless Steel) GTAW,  He can weld CS Carbon steel GTAW? Need code Referance...

Thanks.
PKM

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Re: [MW:27402] Re: If a welder is qualified with SS (Stainless Steel) GTAW, He can weld CS Carbon steel GTAW?

Coceptually, though he is eligible, he has to be qualified / PQR etc for specific welding WPS etc. 

Chandrakant Mohikar
(Ex. PDO CSR (Head - HSSE & QA)

On 28 Feb 2018 11:39 a.m., "Welding and material" <koswaraabi@gmail.com> wrote:
if we talked about F no on the ASME IX F no associated to A no
for P no and F no SS GTAW Qualified for CS, but we must see para 404.15 then see QW 432 and see Note 1 and then going to QW 433 for A no thanks

Pada Sabtu, 24 Februari 2018 17.03.47 UTC+7, PK menulis:
Dear Sir,

If a welder is qualified with SS (Stainless Steel) GTAW,  He can weld CS Carbon steel GTAW? Need code Referance...

Thanks.
PKM

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[MW:27401] Re: If a welder is qualified with SS (Stainless Steel) GTAW, He can weld CS Carbon steel GTAW?

if we talked about F no on the ASME IX F no associated to A no
for P no and F no SS GTAW Qualified for CS, but we must see para 404.15 then see QW 432 and see Note 1 and then going to QW 433 for A no thanks

Pada Sabtu, 24 Februari 2018 17.03.47 UTC+7, PK menulis:
Dear Sir,

If a welder is qualified with SS (Stainless Steel) GTAW,  He can weld CS Carbon steel GTAW? Need code Referance...

Thanks.
PKM

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Tuesday, February 27, 2018

Re: [MW:27399] Re: Girth Flanges of Process Equipment and Heat Exchangers

Gentleman,

Below is a helpful compilation on your query. Experts in group may please add value, if desired.

Girth flanges are used for mating two segments of a pressure vessel. These parts are also widely used in shell and tube heat exchangers and other process equipment to mate various components. There are two common kinds of girth flange such as welded hub joint, loose type (without hub).

     

You may like to check the link ===>> http://www.eng-tips.com/viewthread.cfm?qid=377158


Best Regards,

Vinod Bhatt

On Tue, Feb 27, 2018 at 9:09 AM, PK M <pkmqaqc@gmail.com> wrote:
Dear Experts,

Any standard for Girth Flanges ?

Thank you.



On Sun, Feb 25, 2018 at 12:49 PM, PK M <pkmqaqc@gmail.com> wrote:
Dear Experts,

What is mean by  Girth Flanges ?

Thank you.

On Sat, Feb 24, 2018 at 3:39 PM, PK M <pkmqaqc@gmail.com> wrote:
Dear Sir,


Please explain with photographs for Girth Flanges of Process Equipment and Heat Exchangers


Thanks.




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Re: [MW:27399] If a welder is qualified with SS (Stainless Steel) GTAW, He can weld CS Carbon steel GTAW?

Dear Team,
 Both the carbon and stainless steel filler metals 
Fno. is 6.
Refer QW-404.15 (A change from one F-no in table
Qw-432 to any F-number or to any other filler
metal, except as permitted in Qw-433.
Qw-433 table says qualified with any F.no6 qualified 
For all F-No 6 [refer note1]
Note1 says: deposited wels metal made using a 
bare rod not covered by an SFA specification
but which conforms to an analysis listed in 
Table QW-442 shall be considered to be classified
As F-no 6.

Means carbon steel F.No 6 (but A.No is 1)
 Stainless steel F.No 6 (but A.No is 8)

So, even F.no same but weld metal analysis is
different. So he was not qualified to weld stainless

Best Regards,
Chandra

On 27-Feb-2018, at 12:58 PM, Peter Soloman <petervsoloman@gmail.com> wrote:

Dear Team


Essential, non-essential or supplementary essential variables exists while we qualify WPS.  Once we prepare WPS mentioning essential and non-essential variables, we cannot change that while production welding.  We have to follow whatever is mentioned in WPS.  If we want to change an essential variable we have to separately qualify the WPS.  If we want to change a non-essential variable, we have to revise the WPS (no separate PQR required) and take approval.

 

Hope you understood. 

Regards,

PETER SOLOMAN

TECHNIP FMC 

DUBAI



On Sun, Feb 25, 2018 at 12:46 PM, PK M <pkmqaqc@gmail.com> wrote:
Dear sir,

Backing gas or Purging Gas is not essential variable for WPS.

Thank you

On Sun, Feb 25, 2018 at 10:39 AM, Peter Soloman <petervsoloman@gmail.com> wrote:

Just check the qualification details.  P8 to P8 qualifies for P1 to P1 also.  F number for carbon steel and stainless steel filler wire are same. But deletion of backing gas(QW 408.8) is an essential variable. Since you are not giving backing gas for CS, the welder cannot weld CS with GTAW even though he is qualified on SS with GTAW.   

And if the contractor wish the welder to weld CS where he is qualified on SS,  They can weld the joint by providing backing gas for CS, provided CS GTAW WPSs shall have backing gas mentioned in it.  But 99% of CS WPS for GTAW will not have backing gas!!!


 

Required welding variables as per Sec IX is below.  Hope this helps


Regards,
PETER SOLOMAN

On Sun, Feb 25, 2018 at 9:44 AM, 'anand gupta' via Materials & Welding <materials-welding@googlegroups.com> wrote:
Good morning everyone 

Sir you are write. 

For GTAW can not weld due to essential variables deletion of fas. 

Regards 
Anand gupta
Iocl  baroda


On Sun, 25 Feb 2018 at 8:38 AM, Amit Singh
Removal of Gas Backing is essential variable that's why a SS GTAW qualified welder is not qualified for CS GTAW joints, however reverse can be true for GTAW procedure only
Regards, 
Amit Singh

On 24-Feb-2018 18:30, "'Prashant Panchal' via Materials & Welding" <materials-welding@googlegroups.com> wrote:
Please check gas backing is essential variable for welder qualification. 
On Sat, Feb 24, 2018 at 6:23 PM, sankar rao
If welder qualified with SS 
(GTAW Process),
He can weld CS ( GTAW Process)
Because of F.No's same for both SS &CS  for GTAW 
SS ---- F.NO 6.  SFA NO. 5.9
CS----- F.NO 6.   SFA NO. 5.18

On 24 Feb 2018 14:50, "'Prashant Panchal' via Materials & Welding" <materials-welding@ googlegroups.com> wrote:
Since he may have used backing gas for SS gtaw he will not be qualified for carbon steel as we do not use backing gas for cs material. 
Alternatively u will have to use backing gas for cs as well


On Sat, Feb 24, 2018 at 3:33 PM, PK M
Dear Sir,

If a welder is qualified with SS (Stainless Steel) GTAW,  He can weld CS Carbon steel GTAW? Need code Referance...

Thanks.
PKM

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<WPS.pdf>

Re: [MW:27398] If a welder is qualified with SS (Stainless Steel) GTAW, He can weld CS Carbon steel GTAW?

Dear Team


Essential, non-essential or supplementary essential variables exists while we qualify WPS.  Once we prepare WPS mentioning essential and non-essential variables, we cannot change that while production welding.  We have to follow whatever is mentioned in WPS.  If we want to change an essential variable we have to separately qualify the WPS.  If we want to change a non-essential variable, we have to revise the WPS (no separate PQR required) and take approval.

 

Hope you understood. 

Regards,

PETER SOLOMAN

TECHNIP FMC 

DUBAI



On Sun, Feb 25, 2018 at 12:46 PM, PK M <pkmqaqc@gmail.com> wrote:
Dear sir,

Backing gas or Purging Gas is not essential variable for WPS.

Thank you

On Sun, Feb 25, 2018 at 10:39 AM, Peter Soloman <petervsoloman@gmail.com> wrote:

Just check the qualification details.  P8 to P8 qualifies for P1 to P1 also.  F number for carbon steel and stainless steel filler wire are same. But deletion of backing gas(QW 408.8) is an essential variable. Since you are not giving backing gas for CS, the welder cannot weld CS with GTAW even though he is qualified on SS with GTAW.   

And if the contractor wish the welder to weld CS where he is qualified on SS,  They can weld the joint by providing backing gas for CS, provided CS GTAW WPSs shall have backing gas mentioned in it.  But 99% of CS WPS for GTAW will not have backing gas!!!


 

Required welding variables as per Sec IX is below.  Hope this helps


Regards,
PETER SOLOMAN

On Sun, Feb 25, 2018 at 9:44 AM, 'anand gupta' via Materials & Welding <materials-welding@googlegroups.com> wrote:
Good morning everyone 

Sir you are write. 

For GTAW can not weld due to essential variables deletion of fas. 

Regards 
Anand gupta
Iocl  baroda


On Sun, 25 Feb 2018 at 8:38 AM, Amit Singh
Removal of Gas Backing is essential variable that's why a SS GTAW qualified welder is not qualified for CS GTAW joints, however reverse can be true for GTAW procedure only
Regards, 
Amit Singh

On 24-Feb-2018 18:30, "'Prashant Panchal' via Materials & Welding" <materials-welding@googlegroups.com> wrote:
Please check gas backing is essential variable for welder qualification. 
On Sat, Feb 24, 2018 at 6:23 PM, sankar rao
If welder qualified with SS 
(GTAW Process),
He can weld CS ( GTAW Process)
Because of F.No's same for both SS &CS  for GTAW 
SS ---- F.NO 6.  SFA NO. 5.9
CS----- F.NO 6.   SFA NO. 5.18

On 24 Feb 2018 14:50, "'Prashant Panchal' via Materials & Welding" <materials-welding@ googlegroups.com> wrote:
Since he may have used backing gas for SS gtaw he will not be qualified for carbon steel as we do not use backing gas for cs material. 
Alternatively u will have to use backing gas for cs as well


On Sat, Feb 24, 2018 at 3:33 PM, PK M
Dear Sir,

If a welder is qualified with SS (Stainless Steel) GTAW,  He can weld CS Carbon steel GTAW? Need code Referance...

Thanks.
PKM

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Re: Re: [MW:27397] change in electrode class


7018- F4 
6013 -F2 

F4 with backing qualifies F2 with backing
F4 without backing qualifies F2 With backing

On Mon, Feb 26, 2018 at 9:37 PM, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:
Check F no

On 26-Feb-2018 7:06 pm, "praveen nair" <pk13890@gmail.com> wrote:

Dear Sir,

 Welder is Qualified in E 7018 can also be qualify in E 6013 

 


Praveen Nair
 

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Re: Re: [MW:27396] change in electrode class

As welder is qualified in E7018 (F No.4 with backing), he is qualified for F No. 1, 2, 3, 4 with backing.
Refer QW-433 for detail.

The welder is qualified for E6013 as its F No. is 2

On Feb 26, 2018 7:06 PM, "praveen nair" <pk13890@gmail.com> wrote:

Dear Sir,

 Welder is Qualified in E 7018 can also be qualify in E 6013 

 


Praveen Nair
 

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[MW:27394] Re: Girth Flanges of Process Equipment and Heat Exchangers

Dear Experts,

Any standard for Girth Flanges ?

Thank you.



On Sun, Feb 25, 2018 at 12:49 PM, PK M <pkmqaqc@gmail.com> wrote:
Dear Experts,

What is mean by  Girth Flanges ?

Thank you.

On Sat, Feb 24, 2018 at 3:39 PM, PK M <pkmqaqc@gmail.com> wrote:
Dear Sir,


Please explain with photographs for Girth Flanges of Process Equipment and Heat Exchangers


Thanks.




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[MW:34820] RE: 34813] Clarification in Rate of heating and cooling.

Hello,   Please see the response below.   Regards.   P. Goswami, P. Eng, IWE.   From: materials-welding@googlegroups.com <materials-weld...