Sunday, January 31, 2016

RE: [MW:24195] Qualified thickness for welder

Not clear answer?

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of george.dilintas@gr.bureauveritas.com
Sent: Friday, January 29, 2016 12:58 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:24183] Qualified thickness for welder

 

I the deposited thickness was 13 mm and over and he has deposited at least 3 layers then the range is not  2t but the maximum to be welded (restricted by the WPS)
best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor

I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS A.E  - PIRAEUS  GREECE

Tel: +30 210 40 63 113 /4 /5
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04


anamulqc---19/01/2016 04:25:18---Dear Sir,  We conducted welder qualification at Karbala Oil Refinery Project as per

From: anamulqc@gmail.com
To: Materials & Welding <materials-welding@googlegroups.com>
Date: 19/01/2016 04:25
Subject: [MW:24126] Qualified thickness for welder
Sent by: materials-welding@googlegroups.com




Dear Sir,

 We conducted welder qualification at Karbala Oil Refinery Project as per ASME-IX 2013 Edition. 

 WPS details as follow 
1. WPS qualified base metal- P1 to P1 Gruop all
2. WPS mentioned base metal thickness range- 5 to 26 mm
3. Process FCAW
WQT details
1. Joint design Single V butt joint with back weld(Root side back grind then weld)
2. Base metal SA283-C
3. Thickness 16.0 mm
4. Sequence of welding- Root pass>Hot Pass>Filling>Capping>Back grind & Back weld
5. Test position 2G & 3G 

My client inspector say welder will qualified only for 2T  & Pipe Diameter will qualify over 24" I want to clarify is he correct? For thickness qualified he mention about QW-404.30 
However I will appreciate to you for clarify my problem.




Regards
Anamul
QA/QC Engineer

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[MW:24193] Hardness Of P-91 Material

Please ref ASME B 31.1 TABLE NO. 331.1.1 or NACE MR 0103 for hardness requirements and also maintain voltage & amps less than required ileveln each layer to obtain hardress valve with in limit

Regard
S.karthikeyan

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[MW:24193] Size deviation - Female Sprinkler adaptors

Experts,

 

 

We have received  Female Sprinkler Head Adaptor 3/4"* 1/2" size.This adaptor shall be made socket weld with 1" Pipe. But ID for the 1" pipe is 25 mm and id for Female Sprinkler Head Adaptor 3/4"* 1/2" is 27.5 mm (Pls see the attached pics ).

 

If we weld Pipe to adaptor , we will not be able to get Weld penetration with this size deviation.


Can we do Butt Weld in this case?

 

Kindly advice.

 




Best Regards,

 

Krishana Kamal Nayan

QA/QC  Engineer

Weatherford Oil Tool Middle East Ltd. |

Mobile:+964 780 925 0270

Krishana.Nayan@ME.Weatherford.com  │ www.weatherford.com

 

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Saturday, January 30, 2016

Re: [MW:24192] Hardness Of P-91 Material

Here temp is 2- 3 degree centrigrade...... After PWHT next day we exposed all joints open atmosphere.
Is any effect to increase the hardness.
Pls advice me

On Sat, Jan 30, 2016 at 5:12 PM, Mansukh Satashiya <satashiyam@gmail.com> wrote:

Dear friend
Do heating and cooling rate 60 degree per hour and do proper booth preparation with teen sheet and do not open up to 24 hours after pwht complete
We are doing 52 mm thick p91 joints
Mansukh Satashiya

On Jan 30, 2016 10:43 AM, "pradip kumar Sil" <pradipsil@gmail.com> wrote:
Dear Everybody,

Some of our P-91 Joints( Weldment) are coming hardness value around 300HB in the HRSG Unit.
 Joints thickness is 18 mm & 20 mm & we did PWHT 2 hours holding time at 710 degree centrigrade also we did 150 degree heating rate ,120 degree cooling rate.

Can you pls suggest us this hardness value  is acceptable in the HRSG unit. If not pls suggest me how to recover.
Regards,
Kumar

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Re: [MW:24191] Hardness Of P-91 Material

Dear friend
Do heating and cooling rate 60 degree per hour and do proper booth preparation with teen sheet and do not open up to 24 hours after pwht complete
We are doing 52 mm thick p91 joints
Mansukh Satashiya

On Jan 30, 2016 10:43 AM, "pradip kumar Sil" <pradipsil@gmail.com> wrote:
Dear Everybody,

Some of our P-91 Joints( Weldment) are coming hardness value around 300HB in the HRSG Unit.
 Joints thickness is 18 mm & 20 mm & we did PWHT 2 hours holding time at 710 degree centrigrade also we did 150 degree heating rate ,120 degree cooling rate.

Can you pls suggest us this hardness value  is acceptable in the HRSG unit. If not pls suggest me how to recover.
Regards,
Kumar

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[MW:24189] Effect of brazing temp. on Pure Iron

Dear All,

I have an application of using Pure Iron (Aramco Grade 4), which will undergo a brazing cycle (in vacuum furnace) upto 1060 Deg C.

Query is: Will there be any impact on the mechanical properties at room temperature. Cooling is furnace cooling.

Chemical composition are:

C 0.010   
Mn 0.060
P 0.005
S 0.003
N 0.005
Cu 0.030
Co 0.005
Sn 0.005
   
Typical hardness: 90-95 HB


Thanks in advance.

Regards,
Jaydeep

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Re: [MW:24189] Hardness Of P-91 Material

Dear Mr.Kumar

Normally 760 C with 4 hours holding time required to get a hardness value.But always follow your WPS requirements and client specifications. 


Thanks & Regards
Nareshkumar Subramanian



From: Mohammad Saquib <saquibqaqc@gmail.com>
To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Sent: Saturday, January 30, 2016 9:20 AM
Subject: Re: [MW:24188] Hardness Of P-91 Material

Dear Kumar,
you have to do re PWHT 2 hours holding time at 725 degree centrigrade  make sure the heating & cooling rate is not more than 100 degree

On Sat, Jan 30, 2016 at 7:59 AM, pradip kumar Sil <pradipsil@gmail.com> wrote:
Dear Everybody,

Some of our P-91 Joints( Weldment) are coming hardness value around 300HB in the HRSG Unit.
 Joints thickness is 18 mm & 20 mm & we did PWHT 2 hours holding time at 710 degree centrigrade also we did 150 degree heating rate ,120 degree cooling rate.

Can you pls suggest us this hardness value  is acceptable in the HRSG unit. If not pls suggest me how to recover.
Regards,
Kumar
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Re: [MW:24188] Hardness Of P-91 Material

Dear Kumar,
you have to do re PWHT 2 hours holding time at 725 degree centrigrade  make sure the heating & cooling rate is not more than 100 degree

On Sat, Jan 30, 2016 at 7:59 AM, pradip kumar Sil <pradipsil@gmail.com> wrote:
Dear Everybody,

Some of our P-91 Joints( Weldment) are coming hardness value around 300HB in the HRSG Unit.
 Joints thickness is 18 mm & 20 mm & we did PWHT 2 hours holding time at 710 degree centrigrade also we did 150 degree heating rate ,120 degree cooling rate.

Can you pls suggest us this hardness value  is acceptable in the HRSG unit. If not pls suggest me how to recover.
Regards,
Kumar

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[MW:24187] Hardness Of P-91 Material

Dear Everybody,

Some of our P-91 Joints( Weldment) are coming hardness value around 300HB in the HRSG Unit.
 Joints thickness is 18 mm & 20 mm & we did PWHT 2 hours holding time at 710 degree centrigrade also we did 150 degree heating rate ,120 degree cooling rate.

Can you pls suggest us this hardness value  is acceptable in the HRSG unit. If not pls suggest me how to recover.
Regards,
Kumar

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Friday, January 29, 2016

Re: [MW:24186] EGW welder operator qualified thickness limit

It is restricted by the WPS only

best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor

I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS A.E  - PIRAEUS  GREECE

Tel: +30 210 40 63 113 /4 /5
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
 This message contains confidential information. To know more, please click on the following link: http://disclaimer.bureauveritas.com

By - No comments:

Re: [MW:24183] Qualified thickness for welder

I the deposited thickness was 13 mm and over and he has deposited at least 3 layers then the range is not  2t but the maximum to be welded (restricted by the WPS)
best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor

I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS A.E  - PIRAEUS  GREECE

Tel: +30 210 40 63 113 /4 /5
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04


anamulqc---19/01/2016 04:25:18---Dear Sir,  We conducted welder qualification at Karbala Oil Refinery Project as per

From: anamulqc@gmail.com
To: Materials & Welding <materials-welding@googlegroups.com>
Date: 19/01/2016 04:25
Subject: [MW:24126] Qualified thickness for welder
Sent by: materials-welding@googlegroups.com




Dear Sir,

 We conducted welder qualification at Karbala Oil Refinery Project as per ASME-IX 2013 Edition. 

 WPS details as follow 
1. WPS qualified base metal- P1 to P1 Gruop all
2. WPS mentioned base metal thickness range- 5 to 26 mm
3. Process FCAW
WQT details
1. Joint design Single V butt joint with back weld(Root side back grind then weld)
2. Base metal SA283-C
3. Thickness 16.0 mm
4. Sequence of welding- Root pass>Hot Pass>Filling>Capping>Back grind & Back weld
5. Test position 2G & 3G 

My client inspector say welder will qualified only for 2T  & Pipe Diameter will qualify over 24" I want to clarify is he correct? For thickness qualified he mention about QW-404.30 
However I will appreciate to you for clarify my problem.




Regards
Anamul
QA/QC Engineer

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Re: [MW:24183] what is the difference between QAP and ITP

Do not stick to definitions and abreviations.
Focus to the point...

best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor

I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS A.E  - PIRAEUS  GREECE

Tel: +30 210 40 63 113 /4 /5
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04


Kannayeram Gnanapandithan ---19/01/2016 15:27:10---go with Mr George Lintas THANKS & BEST REGARDS,

From: Kannayeram Gnanapandithan <kgpandithan@gmail.com>
To: materials-welding <materials-welding@googlegroups.com>
Date: 19/01/2016 15:27
Subject: Re: [MW:24134] what is the difference between QAP and ITP
Sent by: materials-welding@googlegroups.com




go with Mr George Lintas

THANKS & BEST REGARDS,
KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY

On Mon, Jan 18, 2016 at 11:27 PM, Vino Varghese <vinopvarghese@gmail.com> wrote:

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Re: [MW:24183] RE: Incompatible wire welding on weldox 700

Dear sir,
For welding of S690QL#S690QL, you should go for ER100S-G.

Regards,
Maulik

On Jan 28, 2016 4:46 PM, "BILLY TAN" <bil19875539@hotmail.com> wrote:

Hi Experts

I am currently developing WPS based on ISO 15614-1.
If I am using ER 70S-6(lower strength wire)(GMAW process) to weld weldox700 /SQL 690 to weldox700 /SQL 690, will I face any problem to weld on it except on the tensile strength? As the tensile strength needed for the structurer is just like S355 material. It is understood that it violate the code ISO15614 on tensile strength. The weldox material is selected base on the wear and tear purpose.


Best Regards
Billy

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Thursday, January 28, 2016

[MW:24182] RE: Incompatible wire welding on weldox 700


Hi Experts

I am currently developing WPS based on ISO 15614-1.
If I am using ER 70S-6(lower strength wire)(GMAW process) to weld weldox700 /SQL 690 to weldox700 /SQL 690, will I face any problem to weld on it except on the tensile strength? As the tensile strength needed for the structurer is just like S355 material. It is understood that it violate the code ISO15614 on tensile strength. The weldox material is selected base on the wear and tear purpose.


Best Regards
Billy
By - No comments:

[MW:24180] implementation of new code API 2000 7tH Edition 2014

  Dear Experts,                             
Require your support to clarify the implementation of new code API 2000 7tH Edition 2014, The detail of issue is,


  • Tank Built in date - 1982   

               The Size of Breather Valve (Pv Valve) 4inch Quntity-01.

     

  • As per API 2000 7tH Edition 2014, we verify that for volatile liquids, the out-breathing calculation is simply double,

              and calculated Breather valve size is coming 6inch,    

     

    Technical query,

       i want to know that the API 2000 7tH Edition 2014, is implemented in existing tanks which have built in before API 2000 7tH Edition 2014.

 

Thanks and Regard,

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[MW:24180] Need S275JR sample WPS and PQR for tank (API 650 )

Dear Experts,

Can you anyone forward me the Sample WPS and PQR for the material S275JR using in tank followed by API 650.

Thanks for advance.

Regards,

Senthilkumar N
Saudi arabia
+966 552749812

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Wednesday, January 27, 2016

RE: [MW:24179] can use P15E wps for P5B

If your fabrication is governed by ASME Boiler and Pressure Vessel Code the answer is unequivocally NO.  You need to perform a qualification with P5B and P8 materials. 

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of JIJILAL K M
Sent: Wednesday, January 27, 2016 2:38 AM
To: materials-welding@googlegroups.com
Subject: [MW:24176] can use P15E wps for P5B

 

Dear Experts,

 

We've to weld 4" x 6.02 mm  HRSG boiler piping joints (only 2 nos.).

 

Materials are   P5B + P8   ( ASTM A335 P5 + ASTM 304L SS) .

 

There is no such qualified  WPS.

 

instead we've a Qualified WPS  for P15E + P8   ( ASTM A335 P91+ ASTM 358  316L SS) .  

 

Can we use this WPS using filler wire ER-309?

 

JIJILAL K.M. 

 

 

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[MW:24178] 600 Lb to 300 Lb

Gents,
Is it possible to make a 2" dia 300 Lb flange out of 600 Lb by machining, and what parameters are critical to check for conformance.
 
BR,
Shashank C Vagal 

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Re: [MW:24177] can use P15E wps for P5B

Dear Jijilal,
                 It is a strange fact that you have already qualified P15E+P8 with ER-309!! You have to use Inconel filler wire or Nickel based filler on this dissimilar metals, as per your requirement. And you have to check how you qualified the WPS, by buttering or by normal butt welding and PWHT. I am saying this because normally, we won't do PWHT to P8 materials because of high PWHT temperature, which may affect the paramagnetic properties of stainless steel.

Thanks & Regards

Rejoy Thomas
STF SpA 

On 27 January 2016 at 12:37, JIJILAL K M <jijilalkm2@gmail.com> wrote:
Dear Experts,

We've to weld 4" x 6.02 mm  HRSG boiler piping joints (only 2 nos.).

Materials are   P5B + P8   ( ASTM A335 P5 + ASTM 304L SS) .

There is no such qualified  WPS.

instead we've a Qualified WPS  for P15E + P8   ( ASTM A335 P91+ ASTM 358  316L SS) .  

Can we use this WPS using filler wire ER-309?

JIJILAL K.M. 


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[MW:24176] can use P15E wps for P5B

Dear Experts,

We've to weld 4" x 6.02 mm  HRSG boiler piping joints (only 2 nos.).

Materials are   P5B + P8   ( ASTM A335 P5 + ASTM 304L SS) .

There is no such qualified  WPS.

instead we've a Qualified WPS  for P15E + P8   ( ASTM A335 P91+ ASTM 358  316L SS) .  

Can we use this WPS using filler wire ER-309?

JIJILAL K.M. 


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Monday, January 25, 2016

Re: [MW:24175] welding consumable of S 355 JR

Firstly; you should prepare WPS supporting with PQR and after passing the tessting, you decided to use it. but any way and from our experience you can use E7016 for root in your PQR or use old own WPS and then No problem to use it in production
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[MW:24173] RE: material identification as per PMI results

It seems to be 4130 but you may further check carbon content to see if it is close to 0.3%.

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Elshan Feyzullayev
Sent: Friday, January 22, 2016 3:17 PM
To: materials-welding@googlegroups.com
Subject: [MW:24158] material identification as per PMI results

 

Gents

 

There is a PMI test result which is as follows:

 

Ni-0.18%, Cr-1.37%, Fe-96.50%, Mn-0.84%, Mo-0.22%. This is a piece of steel pin. Can anyone suggest the rough material grade that this pin has been made off?

 

Your thoughts will be highly appreciated.

 

Many thanks

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[MW:24173] welding consumable of S 355 JR

Dear all,

Shall we can use E7016 for root welding (open root) for s355 JR

Regards,
Jibin Philip

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[MW:24172] RE: 24165] Re: 24158] s/s 347 heat exchanger

Hi Adrian,

 

Preheating will not needed to repair these welds. However some local preheating would be advisable to drive away the moisture and make the weld joints dry, so as to produce good quality welds. Presence of moisture could cause porosities in the welds.

 

It would be advisable to cut a boat sample form one or two the T-TS welds and send the same to the labs for failure analysis to find out the root cause of failures. These points may subsequently be plugged. If your client wants to retain the exchanger in operation for more sustained period of time then the root cause determination would definitely help.

 

Appreciate your thoughts and future course of actions.

 

Thanks.

 

Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist & Consultant.
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

pgoswami@quickclic.net

pradip.goswami@gmail.com

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Adriaan Stoltz
Sent: Saturday, January 23, 2016 4:32 AM
To: pgoswami; materials-welding@googlegroups.com
Cc: Adriaan Stoltz
Subject: [MW:24165] Re: 24158] s/s 347 heat exchanger

 

Good day Pradip and honourable members.

 

I hear your advice. Many thanks.

 

The H/E is in constant service though, we brought it out of service for the 3 yearly statutory inspection. During the previous statutory inspection 3 years ago, the hydrotest was successfull with no leaks. Could the degradation possibly be attributed to thermal fatigue, considering the age of the vessel? 

Secondly, when doing the repair, would you consider pre-heat to be essential? We attempted to repair one of the defective welds but found the adjacent tube to tube sheet weld to crack too. We did not apply a pre- heat though. Could a pre-heat of 150 deg and heat input control possibly solve the problem?

 

Your advice is higly regarded.

 

Many thanx!

 

 

 

Sent from my Samsung Galaxy smartphone.

 

 

-------- Original message --------

From: pgoswami <pgoswami@quickclic.net>

Date: 2016/01/23 06:57 (GMT+02:00)

To: materials-welding@googlegroups.com

Cc: Adriaan Stoltz <riaan@ritc.co.za>

Subject: RE: 24158] s/s 347 heat exchanger

 

Hi Adrian,

 

If the exchanger is out of service for greater part of the year, cooling water on the shell side would act as a trap, in the tight crevices of Tube to tube sheet. If so pitting and resultant pinhole leaks are very much possible in T-TS welds . It would be more appropriate to get the more operating details, chemistry of cooling water, chloride content or other halogen contents. 347 and other 300 series alloys could pit in stagnated cooing water with even > 100 ppm of chlorides. 37 years of service history is quite for an exchanger.

 

If the clients insist of re-hab of his exchanger based on the sound  integrity of rest of the exchanger components, the repair of tube to tube sheet welds is a feasible idea. Best option would be to scoop out the old weld re-weld  by manual GTAW or automatic GTAW process.

 

If you could provide more design/operating details, then it may an interesting case for failure analysis.

 

Thanks.

  

 

Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist & Consultant.
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

pgoswami@quickclic.net

pradip.goswami@gmail.com

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Adriaan Stoltz
Sent: Friday, January 22, 2016 9:07 AM
To: materials-welding@googlegroups.com
Subject: [MW:24158] s/s 347 heat exchanger

 

Good day experts

 

Upon pressure testing of a 347 s/s heat exchanger (tubes and tube sheet) we found numerous miniscule leaks through the tube-to-tubesheet welds as well as from the inner bore of the tube in the HAZ.  The HE is 37 years old, not much operational history except that it is currently operating at app. 200 deg C at a pressure of 500kPa ( cooling water shellside) and 1200kPa (heat transfer oil tube side)

Tubesheet 40mm thick.

Tubes 3/8’’ od  1.2mm thick

 

My questions:

1.       What could be the cause of weld and tube failures?

2.       Preferred procedure for repair?

 

Your input is greatly appreciated.

 

Regards.

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[MW:35346] Cast-iron welding

Any advice for cast iron welding Sent from Yahoo Mail for iPhone

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