[MW:25469] Open Root Pipe Welding / Groove Welding with FCAW Process

Dear sir / experts, 

I need help for welding a M.S. Pipe  with Mechanized FCAW Process for root pass to get good penetration for X-ray ( without backing strip & back gouging ) Wire, E71T-1. Dia, 1.2 mm.  Shielding  Gas,  100 % CO2.  Pipe  Dia  200mm. Wall Thickness 08.00mm. Welding  Position 1GR.

Please give me some guidelines  for above welding operation . Like,  voltage, Amps, and wire speed, travel speed, stick out,  torch angle, gas flow rate for root run  & other subsequent  run.

Few Engineers say that FCAW  are  not be recommended for open root run. They advised for  root  run  weld with GMAW process & subsequent run  by FCAW process. And I found in  ESAB Welder Guide Book . Page No. 16.  they are also  not recommended  root run  by FCAW.  on Pipe  &  Plate both.

My queries are as follows :

1.     Is it possible to weld a root run for X quality penetration  with  FCAW Process?

2.    There is any restriction for root  run welding  with FCAW   by any Welding Codes  like ASME Sec. IX, AWS D1.1. or  ISO 15614. ?

Thanks & Regards.

G. K. Banerjee.

Welder  Trainer.

NAGPUR. ( India )

M-09764555112. 09423632112.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAGhQL0%3DnDGJ5RRxMhwwPd1ksrOp8oomsL_w%3DQ%2Bi06z-KsdLdmA%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

[MW:25467] Pre Heat and SR-reg

Tube matl---SA213 T 91

  Size----------44.5 X 4.5mm thick

Stud matl------ SS 304

  Size-------------Dia 6mm and length 12mm

Welding process---- Drawn Arc Stud welding

Question--- 1. Whether base material is to be Preheated or Not

                    2. Stress Relieving is required or Not. 

THANKS & BEST REGARDS,

KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4ePaA21h5%3DoZXcQ%3DqBre43%3DOfPKSvjSywduq-3k0QzRHsQ%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

[MW:25467] CSWIP3.2 exam after 10 years

Gentalmen,

I would be thankful, if anyone can provide me set of papers, for CSWIP 3.2 exam , after 10 years completion?

 

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAMXKe_qG13GTJndGntkaxm3ANmNVgi_Cv_%2Bq79PM%2BT1kwVpnVQ%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:25466] Re: CSWIP 3.1 Model question paper and practical exam

Dear Members

Such type of mails soliciting for jobs is not allowed in this forum. 

Pl stop. 

This forum is meant for Technical discussions only.

Rgds
 Prakash. G. 
ASME AIS
Independent Consultant. ASME/ISO/PED

From: thanikavel prabhu Sent: Thursday, 29 September 2016 08:41 To: Materials & Welding Reply To: materials-welding@googlegroups.com Cc: karthik6684@yahoo.com Subject: Re: [MW:25465] Re: CSWIP 3.1 Model question paper and practical exam

Hi Mr.Kaarthick,

                  Iam prabhu from Trichy,India.Iam looking for an job in your company.Kindly send your company HR email is and contact details.

Thanks & Regards,

Thanikavel Prabhu
On Wednesday, February 12, 2014 at 7:07:54 AM UTC+5:30, Karthik wrote:

Hi,.

the attached files might be useful to you

 

Thanks & Regards,

(Karthik)

Karthikeyan.S

QA/QC Manager

German-Thai Boiler Engineering Cooperation Limited.

Rayong Factory ;

379 Moo.6 Soi 8, Tambol Pananikom,

Nikompattana, Rayong 21180 THAILAND

Tel : +66 38 897 035-9 Ext. 137

Fax : +66 38 897 034

Hand Phone: 0066 892512282

On Tuesday, February 11, 2014 6:23 PM, jeya chandran <bks...@gmail.com> wrote:

On Saturday, October 13, 2012 7:26:43 PM UTC+8, Gopalakrishnan G wrote:

Dear Experts,

 

        Could u help for me. i need CSWIP 3.1 Model question paper for theory and also need help for practical exam. Help me in regard.

G.Gopalakrishnan

 

--
To post to this group, send email to material...@googlegroups.com
To unsubscribe from this group, send email to materials-weld...@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
 
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-weld...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/9ab5ffc0-89e6-4ba6-abc2-75ad460b56ea%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:25465] Request to suggest Filler Metal for C45 to S355 JR materials

Provide base material chemical composition..

On 27-Sep-2016 1:26 pm, "Mhaskar Aly" <mhaskar.aly@gmail.com> wrote:

Dear All,

Kindly suggest Filler Metal for C45 to S355 JR materials with SMAW & GTAW process

Thanks & Regards

Aly

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAOenW4hmEazRiZpXiv8yB52hrmZ8MB2QjjJdSsKbRybHODkc8Q%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAFOZxBgWyNY624%2BWb4das-frqHBxtZVQMr3tFtw_iYo662gBnA%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

RE: [MW:25464] RE: 25392] PWHT

This amplifies my clarification of what was meant by HIC in earlier contributions. HIC relates to performance of carbon and carbon-manganese steels in process applications where there is a low percentage of H2S in the product. Kannayeram is distinguishing between HIC and HICC which is hydrogen induced cold cracking which occurs in weldments and is known by many other terms such as heat affected zone cracking, cold cracking, underbead cracking etc. Despite the similarity of the acronyms they are unrelated in the factors causing the cracking.

 

Since most cracking in carbon and low alloys steels is related to hydrogen it is always important to get behind the acronyms and clarify the exact type of cracking, and the factors involved.

 

Alan Denney

AKD Materials Consulting Ltd

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kannayeram Gnanapandithan
Sent: 27 September 2016 16:32
To: materials-welding <materials-welding@googlegroups.com>
Subject: RE: [MW:25462] RE: 25392] PWHT

 

Txs Alan, what about HICC, does it occur only in weldments

 

On 27-Sep-2016 8:55 pm, "Alan Denney" <alan@denney1.freeserve.co.uk> wrote:

There is a danger that the discussion is getting confused. Confirming what Ahmed Eissa wrote:

 

Hydrogen induced cracking (HIC) – using this term strictly in relation to the behaviour of carbon and carbon-manganese controlled rolled steels to crack where the process fluids contain relatively small quantities of hydrogen sulphide (and not the many other types of cracking related to hydrogen in steels) is unrelated to hardness. It is due to the presence of elongated manganese sulphide inclusions in the steel (type II manganese sulphide inclusions) which provide sites for the accumulation of atomic hydrogen which then form molecular hydrogen which fractures the steel, causing cracking or blistering.

 

Sulphide stress corrosion cracking of steels is again due to hydrogen sulphide and the factors are the concentration of hydrogen sulphide (partial pressure thereof) the pH of the solution and the susceptibility of the material, commonly assessed by its hardness. NACE MR0175 relates to this type of cracking.

 

Alan Denney

AKD Materials Consulting Ltd

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of George Dilintas
Sent: 27 September 2016 08:12
To: Meghanadh K <materials-welding@googlegroups.com>
Subject: Re: [MW:25457] RE: 25392] PWHT

 

It is controlled by the crystalline structure and more specifically:

1. by the diffusion of atomic hydrogen
2. by the capability to sustain the pressure of molecular hydrogen by plastic transformation

The increase of hardness is an indication of low ductility and thus less possibility of plastic transformation of the grains

 

2016-09-26 19:25 GMT+03:00 'Ahmed Eissa' via Materials & Welding <materials-welding@googlegroups.com>:

Regarding the belowmentioned

I need to confirm that HIC is not controlled by hardness control but by steel chemistry 

 

All shall be reminded that wet sour service induce 

 

Sulfide stress cracking

Hydrogen induced cracking 

Stress oriented hydrogen induced cracking 

Hydrogen blistering 

 

Nace MR 0175 or nace MR 0103 only control ssc, please read these code introduction /preface 

 

Ahmed eissa 

Materials and Corrosion Engineer 

 

 

 

Sent from Yahoo Mail on Android

 

On Thu, 15 Sep, 2016 at 5:38 am, pgoswami

<pgoswami@quickclic.net> wrote:

Hello, ZHY370137,

 

I'm not sure why you're asking this question is general forum, when your contract is bound by your clients' specifications and project requirements. Aramco has very comprehensive specifications for almost everything. If Aramco SAES-W-012 is applicable for your project you need to what's needed as per this spec.

 

What's  the design code, of the pipeline B-31.4 or 31.8? And what're the Aramco specifications applicable?

 

Usually for sour service hardness control is "mandatory" to mitigate the HIC. One of the effective ways to ensure hardness control is PWHT, unless vendor is able to prove otherwise.

 

Appreciate your response.

 

Thanks.

 

 

 

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Engineering Specialist ,
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 zhy370137@gmail.com
Sent: Wednesday, September 14, 2016 10:59 AM
To: Materials & Welding
Subject: [MW:25392] PWHT

 

Dear sir

good day 

pls hlep us confirm whether we need apply PWHT for every girth weld according to your experience.

pipe ：API 5 L X60 HIC resistant pipe

welding method: CRC automatic

pipeline diameter and thickness:20inch 0.4inch(10MM)

medium：sour condensate 

pressure:960psi

pipeline distance：164km between two gas plant in saudi （safaniya plant to berris gas plant)

client：saudi aramco

 

CNPC daqing saudi 

QAQC

 

 

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/f49f77aa-d202-4cc2-91c7-b5f1f828afcd%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/866914810.4904114.1474907104598%40mail.yahoo.com.
For more options, visit https://groups.google.com/d/optout.

 

--

Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAPOi40D8h6p9fJxADQA9iUi716b96mqALy8yzX6a602m7MQHWg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

 

This email has been scanned by BullGuard antivirus protection.

For more info visit www.bullguard.com

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/003501d21897%24b2a100f0%2417e302d0%24%40denney1.freeserve.co.uk.
For more options, visit https://groups.google.com/d/optout.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4ePtDp6qg6QPUen%3DKD_K4fq8o2a9mQM7YZuw7tO3fvhVLg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

[MW:25463] Stress Value of SA-240 TP 316 Ti For SA-213 (seamless) tube & SA -312 (seamless) pipe thickness caculation

Dear Experts

Since the stress value of SA-213 (Seamless Tube) TP 316 Ti and SA-312 (Seamless Pipe) TP 316 Ti are not indicated in ASME Sec. II-D.

　

As per UG-15 provisions, can we use SA-240 (plate) TP 316 Ti stress value for calculating the tube and pipe thickness calculation. However Tube and Pipe of TP316Ti will be procured based on ASME Sec II-A specifications ?　

I have investigated one old code case record number- BC88-182 which has similar kind of query.　

Further I have also found new Code case 2849, Approval date 1-20-2016 'Use of Austenitic Stainless Steel SA-312/SA-312M Type 316Ti (UNS S31635) in the Construction of Heating Boilers', which may be resembled with my query case.

However right now I am not having copy of the same.

Anakh Sirvaiya

Mechanical Engineer

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/1ad8929c-7830-4c54-8f24-25388f9d4bfb%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

RE: [MW:25462] RE: 25392] PWHT

Txs Alan, what about HICC, does it occur only in weldments

On 27-Sep-2016 8:55 pm, "Alan Denney" <alan@denney1.freeserve.co.uk> wrote:

There is a danger that the discussion is getting confused. Confirming what Ahmed Eissa wrote:

 

Hydrogen induced cracking (HIC) – using this term strictly in relation to the behaviour of carbon and carbon-manganese controlled rolled steels to crack where the process fluids contain relatively small quantities of hydrogen sulphide (and not the many other types of cracking related to hydrogen in steels) is unrelated to hardness. It is due to the presence of elongated manganese sulphide inclusions in the steel (type II manganese sulphide inclusions) which provide sites for the accumulation of atomic hydrogen which then form molecular hydrogen which fractures the steel, causing cracking or blistering.

 

Sulphide stress corrosion cracking of steels is again due to hydrogen sulphide and the factors are the concentration of hydrogen sulphide (partial pressure thereof) the pH of the solution and the susceptibility of the material, commonly assessed by its hardness. NACE MR0175 relates to this type of cracking.

 

Alan Denney

AKD Materials Consulting Ltd

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of George Dilintas
Sent: 27 September 2016 08:12
To: Meghanadh K <materials-welding@googlegroups.com>
Subject: Re: [MW:25457] RE: 25392] PWHT

 

It is controlled by the crystalline structure and more specifically:

1. by the diffusion of atomic hydrogen
2. by the capability to sustain the pressure of molecular hydrogen by plastic transformation

The increase of hardness is an indication of low ductility and thus less possibility of plastic transformation of the grains

 

2016-09-26 19:25 GMT+03:00 'Ahmed Eissa' via Materials & Welding <materials-welding@googlegroups.com>:

Regarding the belowmentioned

I need to confirm that HIC is not controlled by hardness control but by steel chemistry 

 

All shall be reminded that wet sour service induce 

 

Sulfide stress cracking

Hydrogen induced cracking 

Stress oriented hydrogen induced cracking 

Hydrogen blistering 

 

Nace MR 0175 or nace MR 0103 only control ssc, please read these code introduction /preface 

 

Ahmed eissa 

Materials and Corrosion Engineer 

 

 

 

Sent from Yahoo Mail on Android

 

On Thu, 15 Sep, 2016 at 5:38 am, pgoswami

<pgoswami@quickclic.net> wrote:

Hello, ZHY370137,

 

I'm not sure why you're asking this question is general forum, when your contract is bound by your clients' specifications and project requirements. Aramco has very comprehensive specifications for almost everything. If Aramco SAES-W-012 is applicable for your project you need to what's needed as per this spec.

 

What's  the design code, of the pipeline B-31.4 or 31.8? And what're the Aramco specifications applicable?

 

Usually for sour service hardness control is "mandatory" to mitigate the HIC. One of the effective ways to ensure hardness control is PWHT, unless vendor is able to prove otherwise.

 

Appreciate your response.

 

Thanks.

 

 

 

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Engineering Specialist ,
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 zhy370137@gmail.com
Sent: Wednesday, September 14, 2016 10:59 AM
To: Materials & Welding
Subject: [MW:25392] PWHT

 

Dear sir

good day 

pls hlep us confirm whether we need apply PWHT for every girth weld according to your experience.

pipe ：API 5 L X60 HIC resistant pipe

welding method: CRC automatic

pipeline diameter and thickness:20inch 0.4inch(10MM)

medium：sour condensate 

pressure:960psi

pipeline distance：164km between two gas plant in saudi （safaniya plant to berris gas plant)

client：saudi aramco

 

CNPC daqing saudi 

QAQC

 

 

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/f49f77aa-d202-4cc2-91c7-b5f1f828afcd%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/866914810.4904114.1474907104598%40mail.yahoo.com.
For more options, visit https://groups.google.com/d/optout.

 

--

Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAPOi40D8h6p9fJxADQA9iUi716b96mqALy8yzX6a602m7MQHWg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

This email has been scanned by BullGuard antivirus protection.

For more info visit www.bullguard.com

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/003501d21897%24b2a100f0%2417e302d0%24%40denney1.freeserve.co.uk.
For more options, visit https://groups.google.com/d/optout.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4ePtDp6qg6QPUen%3DKD_K4fq8o2a9mQM7YZuw7tO3fvhVLg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

RE: [MW:25461] RE: 25392] PWHT

There is a danger that the discussion is getting confused. Confirming what Ahmed Eissa wrote:

 

Hydrogen induced cracking (HIC) – using this term strictly in relation to the behaviour of carbon and carbon-manganese controlled rolled steels to crack where the process fluids contain relatively small quantities of hydrogen sulphide (and not the many other types of cracking related to hydrogen in steels) is unrelated to hardness. It is due to the presence of elongated manganese sulphide inclusions in the steel (type II manganese sulphide inclusions) which provide sites for the accumulation of atomic hydrogen which then form molecular hydrogen which fractures the steel, causing cracking or blistering.

 

Sulphide stress corrosion cracking of steels is again due to hydrogen sulphide and the factors are the concentration of hydrogen sulphide (partial pressure thereof) the pH of the solution and the susceptibility of the material, commonly assessed by its hardness. NACE MR0175 relates to this type of cracking.

 

Alan Denney

AKD Materials Consulting Ltd

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of George Dilintas
Sent: 27 September 2016 08:12
To: Meghanadh K <materials-welding@googlegroups.com>
Subject: Re: [MW:25457] RE: 25392] PWHT

 

It is controlled by the crystalline structure and more specifically:

1. by the diffusion of atomic hydrogen
2. by the capability to sustain the pressure of molecular hydrogen by plastic transformation

The increase of hardness is an indication of low ductility and thus less possibility of plastic transformation of the grains

 

2016-09-26 19:25 GMT+03:00 'Ahmed Eissa' via Materials & Welding <materials-welding@googlegroups.com>:

Regarding the belowmentioned

I need to confirm that HIC is not controlled by hardness control but by steel chemistry 

 

All shall be reminded that wet sour service induce 

 

Sulfide stress cracking

Hydrogen induced cracking 

Stress oriented hydrogen induced cracking 

Hydrogen blistering 

 

Nace MR 0175 or nace MR 0103 only control ssc, please read these code introduction /preface 

 

Ahmed eissa 

Materials and Corrosion Engineer 

 

 

 

Sent from Yahoo Mail on Android

 

On Thu, 15 Sep, 2016 at 5:38 am, pgoswami

<pgoswami@quickclic.net> wrote:

Hello, ZHY370137,

 

I'm not sure why you're asking this question is general forum, when your contract is bound by your clients' specifications and project requirements. Aramco has very comprehensive specifications for almost everything. If Aramco SAES-W-012 is applicable for your project you need to what's needed as per this spec.

 

What's  the design code, of the pipeline B-31.4 or 31.8? And what're the Aramco specifications applicable?

 

Usually for sour service hardness control is "mandatory" to mitigate the HIC. One of the effective ways to ensure hardness control is PWHT, unless vendor is able to prove otherwise.

 

Appreciate your response.

 

Thanks.

 

 

 

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Engineering Specialist ,
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 zhy370137@gmail.com
Sent: Wednesday, September 14, 2016 10:59 AM
To: Materials & Welding
Subject: [MW:25392] PWHT

 

Dear sir

good day 

pls hlep us confirm whether we need apply PWHT for every girth weld according to your experience.

pipe ：API 5 L X60 HIC resistant pipe

welding method: CRC automatic

pipeline diameter and thickness:20inch 0.4inch(10MM)

medium：sour condensate 

pressure:960psi

pipeline distance：164km between two gas plant in saudi （safaniya plant to berris gas plant)

client：saudi aramco

 

CNPC daqing saudi 

QAQC

 

 

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/f49f77aa-d202-4cc2-91c7-b5f1f828afcd%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/866914810.4904114.1474907104598%40mail.yahoo.com.
For more options, visit https://groups.google.com/d/optout.

 

--

Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAPOi40D8h6p9fJxADQA9iUi716b96mqALy8yzX6a602m7MQHWg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

[MW:25457] Request to suggest Filler Metal for C45 to S355 JR materials

Dear All,

Kindly suggest Filler Metal for C45 to S355 JR materials with SMAW & GTAW process

Thanks & Regards

Aly

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAOenW4hmEazRiZpXiv8yB52hrmZ8MB2QjjJdSsKbRybHODkc8Q%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

Re: [MW:25457] RE: 25392] PWHT

It is controlled by the crystalline structure and more specifically:

1. by the diffusion of atomic hydrogen
   
2. by the capability to sustain the pressure of molecular hydrogen by plastic transformation
   

The increase of hardness is an indication of low ductility and thus less possibility of plastic transformation of the grains

2016-09-26 19:25 GMT+03:00 'Ahmed Eissa' via Materials & Welding <materials-welding@googlegroups.com>:

Regarding the belowmentioned

I need to confirm that HIC is not controlled by hardness control but by steel chemistry 

All shall be reminded that wet sour service induce 

Sulfide stress cracking

Hydrogen induced cracking 

Stress oriented hydrogen induced cracking 

Hydrogen blistering 

Nace MR 0175 or nace MR 0103 only control ssc, please read these code introduction /preface 

Ahmed eissa 

Materials and Corrosion Engineer 

Sent from Yahoo Mail on Android

On Thu, 15 Sep, 2016 at 5:38 am, pgoswami

<pgoswami@quickclic.net> wrote:

Hello, ZHY370137,

 

I'm not sure why you're asking this question is general forum, when your contract is bound by your clients' specifications and project requirements. Aramco has very comprehensive specifications for almost everything. If Aramco SAES-W-012 is applicable for your project you need to what's needed as per this spec.

 

What's  the design code, of the pipeline B-31.4 or 31.8? And what're the Aramco specifications applicable?

 

Usually for sour service hardness control is "mandatory" to mitigate the HIC. One of the effective ways to ensure hardness control is PWHT, unless vendor is able to prove otherwise.

 

Appreciate your response.

 

Thanks.

 

 

 

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Engineering Specialist ,
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 zhy370137@gmail.com
Sent: Wednesday, September 14, 2016 10:59 AM
To: Materials & Welding
Subject: [MW:25392] PWHT

 

Dear sir

good day 

pls hlep us confirm whether we need apply PWHT for every girth weld according to your experience.

pipe ：API 5 L X60 HIC resistant pipe

welding method: CRC automatic

pipeline diameter and thickness:20inch 0.4inch(10MM)

medium：sour condensate 

pressure:960psi

pipeline distance：164km between two gas plant in saudi （safaniya plant to berris gas plant)

client：saudi aramco

 

CNPC daqing saudi 

QAQC

 

 

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/f49f77aa-d202-4cc2-91c7-b5f1f828afcd%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/866914810.4904114.1474907104598%40mail.yahoo.com.
For more options, visit https://groups.google.com/d/optout.

--

Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAPOi40D8h6p9fJxADQA9iUi716b96mqALy8yzX6a602m7MQHWg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.