Materials & Welding: February 2014

Friday, February 28, 2014

[MW:20195] NDT Acceptance criteria for IBR welds

Gents,

Where can we find details of NDT Acceptance criteria for IBR job related welds? It is not found in IBR 1950 book. Or may be I missed it.

With Best Regards,

Shashank C Vagal (Quality Adviser)

Re: [MW:20196] Mutiple WPS from single PQR

no / because the recording process as GTAW less than 13mm .

Sent from Yahoo Mail on Android

From: mahammed javeed <javeedcwi@gmail.com>;
To: <materials-welding@googlegroups.com>;
Subject: [MW:20190] Mutiple WPS from single PQR
Sent: Thu, Feb 27, 2014 11:58:40 AM

Gents,

I have PQR with impact test requirements and the details are below like this.

Base material thickness 11mm with impact test requirements

Process GTAW & SMAW

base metail qualified range 11mm- 22mm

GTAW process deposited weld metal qualified range 8 mm

SMAW process deposited weld metal qualified range 14mm

Now I want to make a WPS for a job of 6mm only using GTAW process, I have found a difficulty in understanding the base metal thickness range qualified.

Can I consider only weld metal deposited thickness range this process and make a WPS?

Regards

M. Javeed

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[MW:20197] WELDING REALIGNMENT

Mr david,
Pipeline re alignment is or high low s you mentioned is equally distributed entire circ.and this is very basic things that fabricator is doing while fit up.
All this things and step to correct, you could have mentioned in your pipeline fabrication and erection,welding procedure to avoid client comments.

Regards,

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Re: [MW:20198] Corrosion in Super Duplex Stainless Steel - Sea Water

Hi.

Duplex stainless steels have a good resistance to atmospheric corrosion as well as chloride corrosiin cracking.

But these steels are prone to form intermetallic compounds like sigma, chi.. These componds drastically reduce pitting resistance of duplex steels.

Sigma phase is a iron chromium compond (50-50). It reduces chromium levels in grain boundary areas and make steel susceptible to pitting.

It seems in your case also this is true. During welding of duplex steel you have encountered the temperature range in which these phases form.

On Friday, February 28, 2014, José Luís Ferreira <jluis.nf@gmail.com> wrote:
> Dear experts,
> In my project, we're in trouble corrosion (pitting) in pipes SDSS (UNS S32750 / UNS 32760), the base metal is SDSS (UNS S32750 / UNS 32760), the fluid is seawater. Attached photos showing the defects. I would like someone to help me with technical information about the mechanisms that cause such defect, how to avoid and correct.
> Regards,
>
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[MW:20199] Corrosion in Super Duplex Stainless Steel - Sea Water

Jose,

Have u done pickling and passivation after the welding/NDE or before put into service.
SDDS job cleaning is the most important.
For sea water application P&P is must after the hydro test.

Regards
Mohd.

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[MW:20194] RE: 20191] Repair Welder Qualification as per ASME Sec IX

Absolutely – if one welds on pressure boundary that person must be qualified per Section IX.

John A. Henning

Welding & Materials

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Priyankesh K
Sent: Friday, February 28, 2014 7:30 AM
To: materials-welding@googlegroups.com
Subject: [MW:20191] Repair Welder Qualification as per ASME Sec IX

Dear Experts

Is there any requirement for Welder qualification for Repair as per Sec IX and ASME 31.3

Kindly share your views.

Thanks

Priyankesh

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[MW:20193] RE: 20190] Mutiple WPS from single PQR

No - not if impacts are required. Base metal thickness is an essential variable (QW-403.8) and a supplementary essential variable (QW-403.6). Supplementary essential variable, QW-403.6, takes precedence over QW-403.8 thus limiting the minimum qualified thickness.

Does the application for your 2^nd WPS require impact testing? If not then supplementary essential variable QW-403.6 will not apply and you can write a WPS, without impact qualification, based only on QW-403.8 and QW-451.1 (i.e. 5mm < T < 22mm).

John A. Henning

Welding & Materials

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of mahammed javeed
Sent: Thursday, February 27, 2014 5:59 AM
To: materials-welding@googlegroups.com
Subject: [MW:20190] Mutiple WPS from single PQR

Gents,

I have PQR with impact test requirements and the details are below like this.

Base material thickness 11mm with impact test requirements

Process GTAW & SMAW

base metail qualified range 11mm- 22mm

GTAW process deposited weld metal qualified range 8 mm

SMAW process deposited weld metal qualified range 14mm

Now I want to make a WPS for a job of 6mm only using GTAW process, I have found a difficulty in understanding the base metal thickness range qualified.

Can I consider only weld metal deposited thickness range this process and make a WPS?

Regards

M. Javeed

[MW:20200] ULTRA SONIC TESTING

Dear sir ,

As per my knowledge the thumb rule to select the probe angle is ( 90- t ) where t = thk of material . i would like to know how to select probe angle in UT if material thk is more than 100 mm .

Thanks .

Regards ,

Mayur kotiwar

mayurkotiwar77@gmail.com

[MW:20191] Repair Welder Qualification as per ASME Sec IX

Dear Experts

Is there any requirement for Welder qualification for Repair as per Sec IX and ASME 31.3

Kindly share your views.

Thanks

Priyankesh

[MW:20192] Corrosion in Super Duplex Stainless Steel - Sea Water

Dear experts,

In my project, we're in trouble corrosion (pitting) in pipes SDSS (UNS S32750 / UNS 32760), the base metal is SDSS (UNS S32750 / UNS 32760), the fluid is seawater. Attached photos showing the defects. I would like someone to help me with technical information about the mechanisms that cause such defect, how to avoid and correct.

Regards,

Re: [MW:20185] Cut -Out Of Joint's

No limitation from code point of view.

But Preheat, PWHT and hardness plays important role

On Thu, Feb 27, 2014 at 2:24 PM, Richard robes <mech.processes@gmail.com> wrote:

Gent's
How many times a joint can be cut out as per ASME B31.3? Is it specified anywhere in codes.

Regards
Richard

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Thursday, February 27, 2014

[MW:20186] Cut -Out Of Joint's

I hv'nt seen such requirement or restriction.

any way as part of good workmanship maximum 2 times is suitable to maintain HAZ property or else cut up to HAZ each side to facilitate new HAZ.

Fitting joints more times CRW very difficult,especially elbow,TEE.

Number of cut and re weld depend whether it is SS or CS materials.

For SS,DSS,SDSS special care should be taken avoid re repair to control ferrite number,corrosion property.

Hope this help.

Regards
Mohd.

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Re: [MW:20187] WPS criteria for SA240 (304H) material.

If you do not change the Fno you do not need to re qualify. In this particular case you risk nothing from a metallurgical point of view.
Best regards
Dr Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
HBS Regional Technical Manager

----- Original Message -----
From: "S.Mohammed" [mohd52100@gmail.com]
Sent: 02/26/2014 11:49 AM PST
To: materials-welding@googlegroups.com
Subject: [MW:20182] WPS criteria for SA240 (304H) material.

Dear mohd,

You can't use 316L filler for 304H material. You will have to use 308H filler rod.

Hence you have to re write WPS.
Welder qualification is not required.

Regards
Mohd.

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Re: [MW:20187] Cut -Out Of Joint's

The code has no limitation. However in case of some specific materials the accumulation of heat input may alter the base metal properties. Usually in the case of a second repair a moqueup is a must
Best regards
Dr Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
HBS Regional Technical Manager

From: Richard robes [mech.processes@gmail.com]
Sent: 02/27/2014 02:24 AM PST
To: materials-welding@googlegroups.com
Subject: [MW:20183] Cut -Out Of Joint's

Gent's

How many times a joint can be cut out as per ASME B31.3? Is it specified anywhere in codes.

Regards

Richard

[MW:20189] Welding filler material suitable to service temperature minus 196 deg C

Dear Experts,

We have a requirement for welding CF8M cast material to service temperature minus 196 DEG C. this welded component is practically not feasible to be subjected to PWHT.

We find Filler E 316L Mn-15 can be used as it is capable of yielding impact requirement of 60J @minus 196 Deg C.

Is this filler be crack resistant(such as fissures), since this has very low ferrite level less than 1% ?

Please clarify the above.

Thanks,

MANIVANNAN.P

[MW:20190] Mutiple WPS from single PQR

Gents,

I have PQR with impact test requirements and the details are below like this.

Base material thickness 11mm with impact test requirements

Process GTAW & SMAW

base metail qualified range 11mm- 22mm

GTAW process deposited weld metal qualified range 8 mm

SMAW process deposited weld metal qualified range 14mm

Now I want to make a WPS for a job of 6mm only using GTAW process, I have found a difficulty in understanding the base metal thickness range qualified.

Can I consider only weld metal deposited thickness range this process and make a WPS?

Regards

M. Javeed

[MW:20183] RT Acceptance

Gent's,

Does somebody have an easy handbook regarding RT acceptance criteria for both B31.3 and API 1104, so that every time we don't need to refer codes and interpret easily.

Regards

Richard

[MW:20183] Cut -Out Of Joint's

Gent's

How many times a joint can be cut out as per ASME B31.3? Is it specified anywhere in codes.

Regards

Richard

[MW:20182] WPS criteria for SA240 (304H) material.

Dear mohd,

You can't use 316L filler for 304H material. You will have to use 308H filler rod.

Hence you have to re write WPS.
Welder qualification is not required.

Regards
Mohd.

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Wednesday, February 26, 2014

Re: [MW:20181] TICKNESS OF CONFINED MATERIAL.

Dear Ferguson Duru, with an ultrasonic thickness gauge machine your concern would be solved.

Regards,

Chukwumaobi Onwunaka

Sent from Yahoo Mail on Android

From: Ferguson Duru <fergiedimedici@gmail.com>;
To: <materials-welding@googlegroups.com>;
Subject: [MW:20177] TICKNESS OF CONFINED MATERIAL.
Sent: Tue, Feb 25, 2014 9:30:12 PM

HELLO EXPERTS.

PLEASE I NEED INFORMATION ON HOW TO GET AN INSTRUMENT THAT CAN MEASURE THE THICKNESS OF A MATERIAL FROM JUST ONE SIDE LIKE THE TICKNESS OF THE STEEL PLATE OF A PETROLEUM STORAGE THANK.

I WILL LIKE TO KNOW THE BRAND NAME AND POSSIBLY A LINK TO GET ONE.

I HAVE SEARCHED THE INTERNET BUT HAVENT REALY GOT WHAT I NEED.

THANKS

[MW:20178] WPS criteria for SA240 (304H) material.

Dear Sir,

I have piping WPS 3" Sch 80 ( 7.62 thk), Stainless steel 316L. My future project is need to install new elbow size 28",32" & 38" for reactor. Material for elbow SA240(304H). Both side of elbow shall be weld short piece pipe. Details for short piece is rolled plate(different thickness- 16mm max thickness) then joint it with welding, then weld to the elbow. Is it possible to use WPS mention above?. Refer to ASME shall 2T max of base metal can be weld. If not, can I just develop new WQT until meet thickness required?. Example is, me produce WQT 6" Sch 160. Is it possible?. Refer to ASME DIAMETER range 2-1/2" to unlimited. Material also still in same grouping. Plate for short piece also SA240(304H).

OR I need to develop new WPS and WQT?. Thank you in advance.

--
Best Regard,

Mohd Firdaus Bin Abd Rahim

QA/QC
h/p : +6012-2796361
e-mail : mohdfirdaus.abdrahim77@gmail.com

seemyskill_77@yahoo.com

[MW:20179] WELDING REALIGNMENT

Dear All,

I would like to seek your opinion, understanding and or feedback with regard to the following question

We have a case here where the weld joint required to undergo a repair on a pipe weld due to the radiography taken. There is an approved weld repair procedure which allows us to grind or gouge out the defective area and re-weld with the same approved WPS. This is acceptable to the customer / end user. There is no issue here.

However, in another scenario, we discovered some misalignment on the pipe line/ spool during the assembly stage and we grind or gouge part of the weldment and re-weld it back to the correctness or straightness of the line. There is no procedure being submitted in the first place.

We have submitted a NCR and it was accepted by the third party representative but was rejected outright by the end user for failure to provide an approved (re-alignment) procedure and also failed to inform them (customer) in advance prior to any re-work to realign the pipe line (on a gas compressor skid assembly package)

Question :-

1. Does anyone have any previous experience on what should be carried out for the realignment of the pipe spool or line? Please share.

2. The customer’s specifications does not clearly indicate this case scenario for further rectification action and we believe that their specifications does not address this subject, so therefore, it is rejectable by the customer?

3. Does anyone recall such (experience) issues from the ANSI B31.3 which the pipe spools is based on for the manufacturing and testing?

Thank you in advance for sharing with us

Thank you

Best Regards

David Chan

Singapore

RE: [MW:20179] TICKNESS OF CONFINED MATERIAL.

ut thikness gage can make it

Date: Tue, 25 Feb 2014 21:30:12 +0000
Subject: [MW:20177] TICKNESS OF CONFINED MATERIAL.
From: fergiedimedici@gmail.com
To: materials-welding@googlegroups.com

HELLO EXPERTS.

PLEASE I NEED INFORMATION ON HOW TO GET AN INSTRUMENT THAT CAN MEASURE THE THICKNESS OF A MATERIAL FROM JUST ONE SIDE LIKE THE TICKNESS OF THE STEEL PLATE OF A PETROLEUM STORAGE THANK.

I WILL LIKE TO KNOW THE BRAND NAME AND POSSIBLY A LINK TO GET ONE.

I HAVE SEARCHED THE INTERNET BUT HAVENT REALY GOT WHAT I NEED.

THANKS

[MW:20177] TICKNESS OF CONFINED MATERIAL.

HELLO EXPERTS.

PLEASE I NEED INFORMATION ON HOW TO GET AN INSTRUMENT THAT CAN MEASURE THE THICKNESS OF A MATERIAL FROM JUST ONE SIDE LIKE THE TICKNESS OF THE STEEL PLATE OF A PETROLEUM STORAGE THANK.

I WILL LIKE TO KNOW THE BRAND NAME AND POSSIBLY A LINK TO GET ONE.

I HAVE SEARCHED THE INTERNET BUT HAVENT REALY GOT WHAT I NEED.

THANKS

Tuesday, February 25, 2014

Re: [MW:20176] WPS - Base Metal Qualification ranges.

Set-through Nozzle Installation (application to pressure equipment):

WPS:

Must be qualified to weld thickness T .

There is no consideration of D , d or t .

Welder/Machine Welding Operator:

Must be qualified to weld in the position required and the

groove thickness T .

There is no consideration of D , d or t .

2. Set-on Nozzle Installation (application to pressure equipment):

WPS:

Must be qualified to weld thickness t .

There is no consideration of D , d or T .

Welder/Machine Welding Operator:

Must be qualified to weld thickness t .

Must be qualified to weld diameter d .

Position of welding must also be considered.

On Mon, Feb 24, 2014 at 10:08 AM, Rana Vikas <vhrana@gmail.com> wrote:

Dear All,

We have WPS 6'' NB X10.97 mm Sch 80 A106 Gr.B to 6'' NB X10.97 mm Sch 80 A106 Gr.B with GTAW + FCAW.

Can we use this WPS for branch joints i.e main Header (6'' NB X10.97 mm Sch 80 A106 Gr.B) to Pipe joints (3'' NB X 5.49 mm SCh.40 A106 Gr.B) ?

With Regards,
Vikas Rana

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Monday, February 24, 2014

[MW:20174] vacum sheild 7018 electrode use without backing

Ans to youur question

1. Req baking and not require baking you can use straight to site after opening seal

2. No.

3. Follow the manufacture recommendation.

Regards,

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[MW:20175] WPS - Base Metal Qualification ranges.

Yes.if GTAW thickness qualification permit.

Regards

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[MW:20173] WPS - Base Metal Qualification ranges.

Dear All,

We have WPS 6'' NB X10.97 mm Sch 80 A106 Gr.B to 6'' NB X10.97 mm Sch 80 A106 Gr.B with GTAW + FCAW.

Can we use this WPS for branch joints i.e main Header (6'' NB X10.97 mm Sch 80 A106 Gr.B) to Pipe joints (3'' NB X 5.49 mm SCh.40 A106 Gr.B) ?

With Regards,
Vikas Rana

[MW:20172] vacum sheild 7018 electrode use without backing

Dear Experts,

What is the differences of dry pack and vacuum shield electrode?

Are the tight plastic cover outside of the electrode box is consider to be vacuum shield?

Is there any specification that state the vacuum shield electrode may be used without backing?

regards

HADI

Newbie QA/QC Engineer

Re: [MW:20169] RE: Black spots on DSS Weld Joints.

I agree with Sridhar ,

Also we use the power brushing too as Sridhars used , but pls focus on grinding or brushing ; those are the key of your solution

>Tahir Bilge Olmez
>International Welding Eng.
>Met. & Mat Eng.
>Verify Europe & Atlantic Marine Survey
>+90 544 6158801

On Friday, February 21, 2014 7:19:46 PM UTC+2, sridhar wrote:

In some of our earlier projects, we have faced similar problem with tig process. The slag line
traces in between the layers were not visible in radiography, but noticed in UT testing in the
form of suspected LF.

The contamination (even with all the precautions) could be due to quality of material, purity
of argon gas or due to other unknown reasons.

we could overcome the problems not by grinding but with power brushing of each layer of
welding using SS stringer and cup brushes.

The welds passed through and slag line traces/spots were not seen any more.

Sridhar.

From: Tahir Olmez <tahir...@gmail.com>
To: material...@googlegroups.com
Sent: Friday, 21 February 2014 3:53 AM
Subject: Re: [MW:20157] RE: Black spots on DSS Weld Joints.

Dear Friends ,

We had the same problem for tig (gtaw) , as we realised that all black spots were small slag zones , the solution was grinding before pickling will exactly solve your problem if there aren't any other problems or mistakes

Best Regards

>Tahir Bilge Olmez
>International Welding Eng.
>Met. & Mat Eng.
>Verify Europe & Atlantic Marine Survey
>+90 544 6158801

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Sunday, February 23, 2014

[MW:20170] Which consumable to use for S355ML and S355NL

I have got a new project in my company which is having materials of Grade S355ML and S355NL. When i searched for the consumables for S355NL, I found many contradicting results. Some say it can be treated as CS material and some say it should be welded with alloy consumables. Please advise on which consumable will be suitable for this materials.

Regards,

Rakesh

RE: [MW:20171] UNS 6625 AND UNS 8904

Dear Mani

Absolutely Not, because UNS No 6625 and UNS No 8904 have different P. Nos (P No 43 and 45 respectively) which is essential variable for performance test as per ASME IX (see QW-350).

Regards,
Himan Nikdin

Date: Sun, 23 Feb 2014 12:05:08 +0300
Subject: Re: [MW:20168] UNS 6625 AND UNS 8904
From: manigdcl@gmail.com
To: materials-welding@googlegroups.com

Dear sir,

thanks for your valuable reply.

i have the WPS for UNS no 6625 , can i qualify the the welder by using this WPS for UNS no 8904 material

Thanks & Regards,

Manikandan N

QC - Welding Inspector.

P O BOX No : 1884
Trags - Doha

Mobile : +974 33982954 & E-mail : manikandan@tragsqatar.com

On Sun, Feb 23, 2014 at 11:06 AM, Himan Nikdin <himan.nikdin@outlook.com> wrote:

Hi
Dear Mani

UNS 6625 is Ni-Base alloy and is an excellent general purpose material for elevated temperature use in applications where high strength and a good oxidation resistance is needed. It has an excellent corrosion resistance in wide range of severe corrosive environments and it has very low tendency to localized corrosion in chloride containing environments. Ralloy 9982 fulfills ASTM B 834.

UNS 8904 is an austenitic stainless steel with superior corrosion resistance in comparison with Type 316L and Type 317L. Due to addition of Cu (1.5%), this material displays excellent corrosion resistance against reducing acids such as sulfuric acid and phosphoric acid. It is used in chemical plants and a wide range of other applications. Nippon Yakin supplies this product in plate, sheet and strip form.

Regards,
Himan Nikdin

Date: Sun, 23 Feb 2014 10:29:05 +0300
Subject: [MW:20163] UNS 6625 AND UNS 8904
From: manigdcl@gmail.com
To: materials-welding@googlegroups.com

Dear Sir,

i need to confirm, UNS 6625 and UNS 8904 materials are equivalent. or not

pls give me the details...

Thanks & Regards,

Manikandan N

QC - Welding Inspector.
P O BOX No : 1884
Trags - Doha

Mobile : +974 33982954 & E-mail : manikandan@tragsqatar.com

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Re: [MW:20168] UNS 6625 AND UNS 8904

Dear sir,

thanks for your valuable reply.

i have the WPS for UNS no 6625 , can i qualify the the welder by using this WPS for UNS no 8904 material

Thanks & Regards,

Manikandan N

QC - Welding Inspector.

P O BOX No : 1884
Trags - Doha

Mobile : +974 33982954 & E-mail : manikandan@tragsqatar.com

On Sun, Feb 23, 2014 at 11:06 AM, Himan Nikdin <himan.nikdin@outlook.com> wrote:

Hi
Dear Mani

UNS 6625 is Ni-Base alloy and is an excellent general purpose material for elevated temperature use in applications where high strength and a good oxidation resistance is needed. It has an excellent corrosion resistance in wide range of severe corrosive environments and it has very low tendency to localized corrosion in chloride containing environments. Ralloy 9982 fulfills ASTM B 834.

UNS 8904 is an austenitic stainless steel with superior corrosion resistance in comparison with Type 316L and Type 317L. Due to addition of Cu (1.5%), this material displays excellent corrosion resistance against reducing acids such as sulfuric acid and phosphoric acid. It is used in chemical plants and a wide range of other applications. Nippon Yakin supplies this product in plate, sheet and strip form.

Regards,
Himan Nikdin

Date: Sun, 23 Feb 2014 10:29:05 +0300
Subject: [MW:20163] UNS 6625 AND UNS 8904
From: manigdcl@gmail.com
To: materials-welding@googlegroups.com

Dear Sir,

i need to confirm, UNS 6625 and UNS 8904 materials are equivalent. or not

pls give me the details...

Thanks & Regards,

Manikandan N

QC - Welding Inspector.
P O BOX No : 1884
Trags - Doha

Mobile : +974 33982954 & E-mail : manikandan@tragsqatar.com

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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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