Materials & Welding: September 2023

Saturday, September 30, 2023

[MW:34558] MOC-316L ,P-8 ,FILLET WELD PROCEDURE QUALIFICATION

Dear expert,

As per ASME sec-9 , QW-202.2 para C ,

We can proceed SS-316L Material GTAW, FILLET WELD PROCEDURE QUALIFICATION, please suggest me if macro test is applicable for this requirement.

Because my job is only fillet weld small bore socket type welding required for my scope of work.

Fillet‐weld

procedures so qualified may be used for welding all thick-

nesses of base metal for all sizes of fillet welds, and all dia-

meters of pipe or tube in accordance with Table

QW-451.4. Nonpressure‐retaining fillet welds, as defined

in other Sections of the Code, may as an alternate be qual-

ified with fillet welds only. Tests shall be made in accor-

dance with QW-180. Limits of qualification shall be in

accordance with Table QW-451.3.

Kindly update ASAP.

With warm Regards,

SIDDIQUE IMAM
QA/QC ENGINEER
MOB: +91-7600972964
EMAIL- sddqimam@gmail.com

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Friday, September 29, 2023

[MW:34558] WPS/PQR

Dear All,

Can anybody share the PowerPoint presentation of WPS/PQR/WPQ .....please.

With Warm Regards,

S.TAMIZH SELVAN,

Mobile: +91-9597370860 ( India )

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Thursday, September 28, 2023

Re: [MW:34556] Re rolling after NDT

I suppose this is a structural material. Rerolling does not reduce the Material Thickness and it is done to obtain uniform curvature and does not induce any stresses. In structural material, even Flame straightening below 600 deg C is permitted.

Just for a precaution, you can have the L-seam RT tested after rerolling.

Thanks & Regards

J.Gerald Jayakumar

On Wednesday, 27 September, 2023 at 07:22:34 pm IST, RAJESH KUMAR <rajeshkumarbhaskara@gmail.com> wrote:

Dear Expert,

During a site observation, a subcontractor's carbon steel shell (EH36, thickness 40 mm) was found re-rolled due to ovality after 100% of the NDT(UT&MPI) long seam welds. Many stresses come and grain boundaries are stretched after rolling such a thick joint.Any experts please advise.

Standard - DNV-OSC -401
Construction specifications - AWS D1.1

Thanks & Regards

Rajesh

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Wednesday, September 27, 2023

Re: [MW:34556] Re rolling after NDT

No issues .. kindly proceed rerolling and after that do volumetric and surface NDT

Regards

Dhaneesh

On Wed, Sep 27, 2023, 5:52 PM RAJESH KUMAR <rajeshkumarbhaskara@gmail.com> wrote:

Dear Expert,

During a site observation, a subcontractor's carbon steel shell (EH36, thickness 40 mm) was found re-rolled due to ovality after 100% of the NDT(UT&MPI) long seam welds. Many stresses come and grain boundaries are stretched after rolling such a thick joint.Any experts please advise.

Standard - DNV-OSC -401
Construction specifications - AWS D1.1

Thanks & Regards

Rajesh

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Re: [MW:34553] Copper and Copper Alloys Welding - Reg

What is the Grade of Copper and Thickness

Sent from my iPhone

On 27-Sep-2023, at 7:22 PM, Nirmal chandrasekaran <nirmalchandrasekaran352@gmail.com> wrote:

Hi Gents,

Please share the WPS for the Copper Materials.

Thanks & Regards
Nirmal Kumar . C

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Re: [MW:34553] Re rolling after NDT

This is Carbon steel . Should not be any issue with L seam soundness.

Pl repeat NDT

Thanks

Vishwas -IWE

9823472273

Sent from my iPhone

On 27-Sep-2023, at 7:22 PM, RAJESH KUMAR <rajeshkumarbhaskara@gmail.com> wrote:

Dear Expert,

During a site observation, a subcontractor's carbon steel shell (EH36, thickness 40 mm) was found re-rolled due to ovality after 100% of the NDT(UT&MPI) long seam welds. Many stresses come and grain boundaries are stretched after rolling such a thick joint.Any experts please advise.

Standard - DNV-OSC -401
Construction specifications - AWS D1.1
<image.png>

Thanks & Regards

Rajesh

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Re: [MW:34553] Re rolling after NDT

Re-do All NDT Performed before rolling. Volumetric NDT Results should compare with before rolling. (Ex. Radiographs before and after compare it)

Thank you,

Regards,

S.SENTHILKUMAR

On Wednesday, 27 September, 2023 at 07:22:42 pm IST, RAJESH KUMAR <rajeshkumarbhaskara@gmail.com> wrote:

Dear Expert,

Standard - DNV-OSC -401
Construction specifications - AWS D1.1

Thanks & Regards

Rajesh

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Tuesday, September 26, 2023

[MW:34549] Ultrasonic testing super duplex

Dear Experts

Can anyone summarized procedure for UT super duplex using conventional weld overlay cladding process.? Acceptance criteria? Standards

Which UT technique to be followed?

Kind Regards

Neil

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Monday, September 25, 2023

[MW:34549] Re rolling after NDT

Dear Expert,

Standard - DNV-OSC -401
Construction specifications - AWS D1.1

Thanks & Regards

Rajesh

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Sunday, September 24, 2023

Tube to Tubesheet mockup for HE and double pipe Exchangers.Re: [MW:34549] Tube to tube sheet WPS qualification

Dear All

Greetings for the day.

We are carrying out a fabrication order which has

1) Double pipe Exchangers

MOC CS to CS

Sizes 3" X 2" NB

3" X 1" NB

2) Double pipe Exchangers

MOC SS304 to SS304

Sizes 3" X 2" NB

3) Shell and PIPE Exchangers having Pipe to tubesheet joints

Moc Tubesheet 69mm thk SA387Gr. 11 to pipe 65NB Sch 80 SA335P11 .

4) Shell and tube Exchangers having Tube SS304 to tubesheet SA387Gr. 11 joints

Moc CS to CS sizes of tube :12.7OD x 3thk

5) Shell and tube Exchangers having Tube DSS31803 to tubesheet SA516Gr. 70 joints

sizes of tube :12.7 OD x 3thk

My query is

How many mock up test are to be established.

Fabrication is as per SecVIII div 1.

Thanks in advance

Amit 9833859030

On Fri, 9 Sept, 2022, 10:25 am 'Prakash Hegde' via Materials & Welding, <materials-welding@googlegroups.com> wrote:

Hi
You req to qualify Mock up for T to Tsht joint as per secIX all reqmnt is addressed
This ll be used as PQR n WPS also
Regards
Hegde

Sent from Yahoo Mail on Android

On Fri, 9 Sep 2022 at 10:09, sujit kumar
<sujitkumar19942@gmail.com> wrote:

Dear sourav sir,

Thanks for the information whatever you have given it is really useful for me.......

sir I want to qualify new WPS for that tube-to-tube sheet because tube thickness is only 0.9 mm and tube od is 12.5 mm because I am not having WPS which lies in this thickness. please guide...??

On Fri, 9 Sept 2022 at 09:31, Sourav Bohrays <souravbohrays@gmail.com> wrote:
Dear sujit
If your code of construction is asme sec8 div1 no need of mockup you can use groove weld qualified wps for tuve to tubesheet
If code of construction is asme sec8 div2 its mandatory to do mockup.
If you have any earlier qualified tube to tubesheet mockup you can use by providing essential variable for tube to rubesheet in sec9

On Thu, 8 Sept 2022, 1:51 pm sujit kumar, <sujitkumar19942@gmail.com> wrote:
Hello sahil saini sir.

I would like to inform you that I know that clause but there is so many dought i am getting like
If I want to do welding flange to tube....how to prepare WPS for that..???
Is there demonstration required for this tube to tube sheet...??

What test required in that WPS??

Please explain me it would be greatful for me

Best Regards
Sujit kumar

On Thu, Sep 8, 2022, 10:43 Shahil Saini <sainishahil98@gmail.com> wrote:
Hello Sujit,

You shall refer ASME section IX Article-1 (QW-193) for tube to Tubesheet tests.

Thanks & Regards
Shahil Saini

On Thu, Sep 8, 2022, 08:29 sujit kumar <sujitkumar19942@gmail.com> wrote:
Dear all,

Greeting for the day.

Please guide me regarding tube to tube sheet WPS Qualification.

We are having 8'' and 20'' flange and
tube size 12mm Od
thickness of the tube is 0.9 mm

Best regards
Sujit kumar

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Friday, September 22, 2023

[MW:34549] Copper and Copper Alloys Welding - Reg

Hi Gents,

Please share the WPS for the Copper Materials.

Thanks & Regards

Nirmal Kumar . C

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Wednesday, September 20, 2023

[MW:34547] Single pass thickness

Hello All

How can I get the data on Welding electrode sizes and their corresponding single-pass deposition thickness?

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[MW:34547] Air Leak -Tank- Roof Test-Procedure

hello Good Day All

I would like to have procedure for Air Leak Test for the Tank Roof, with the water column Test pressure,

As per Appex-F 4.4-API 650

--if any one can help on it please revert

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Thursday, September 14, 2023

Re: [MW:34544] Material Inspection Acceptance

Dear Helmy,

If your plate is SA 36 then you can refer to SA6 where an under tolerance is provided which is 0.01 of an inch.

However, I suggest you have a word with your design engineer & enquire about the minimum design thickness, if the design thickness is 9.75 mm then there is no need to worry about it & the plate can be accepted.

On Thu, 14 Sept 2023 at 07:54, mohd helmi <mohdhelmi.hasmuni@gmail.com> wrote:

Dear Expert,

I have difficulties regarding material inspection. Now client reject my material inspection due to thinner plate not same with DO? for examples plate purchase 10mm now coming around 9.75mm, which code can I am refer to?

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Re: [MW:34544] Material Inspection Acceptance

What is your plate material specification?

Material specification always refers to General specification requirements for plate size, dimensions, straightness as well as physical & mechanical properties.

For example if your material is SA 516 then you can find general requirements in SA 20 for all the tolerances and deviations.

Thanks & Regards

K.Dinesh

Metallurgist

On Thu, Sep 14, 2023 at 8:54 AM mohd helmi <mohdhelmi.hasmuni@gmail.com> wrote:

Dear Expert,

I have difficulties regarding material inspection. Now client reject my material inspection due to thinner plate not same with DO? for examples plate purchase 10mm now coming around 9.75mm, which code can I am refer to?

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Tuesday, September 12, 2023

Re: [MW:34540] Transverse Crack on Parent Metal (SS201)

is this longitudinal weld ?

This may be stress corrosion crack

* stresses from plate rolling and thermal weld stresses

* corrosion as it is appear in photo ( black spots ) and may be used tools containing halides ( marking colors ) .

* annealing after welding is very effective solution for reducing the tendency of stress cracking

* pickling did after welding ?

Best Regards ,

ENG. Ahmed Osman

On Tuesday, September 12, 2023 at 06:22:22 a.m. GMT+3, G Gughan <ggughan17@gmail.com> wrote:

Dear Experts,

Please find the attached picture for your deep & clear interpretation. After welding I have found a few transverse cracks along the weld. What could be the reason behind this? Kindly do technical advice or prevention for my understanding.

The material spec is SS201.

Is it a Material defect or a Crack formed due to welding?

Crack induced after a few days of welding not during welding & after immediate welding.

Kindly note that the pipe was formed/developed from the plate by the cold rolling.

Your advice & comments will be highly appreciated.

Thanks,

Kind Regards,

G.Gughan

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Saturday, September 9, 2023

[MW:34536] Alloy steel -Tube and Cladded tube sheet

Need guidance for PWHT -

Code of Construction - ASME SEC VIII DIV 1

Job - Heat exchanger

Material - Tube -SA 213 T11 - 19.05 OD X 2.11 THK

Tube sheet - SA 336 F11 CL2 , Cladded with Alloy 600

Tube -Tube sheet joint configuration - Groove and Fillet - 2mm -45Deg Vee with 2 mm fillet

Welding Process proposed - GTAW

Welding filler metal proposed- ERNiC3

Query -

We reviewed the PWHT exemption in Table UCS-56-3 for P-No. 4 materials and UW-40 (f)(g) for Nominal thickness consideration and PWHT requirement

Here nominal thickness is Tube thickness (2.11mm ) as per UW-40 (f)(g)

Pl advice for PWHT exemption for above configuration of Tube to tube sheet PWHT wrt Table UCS-56-3 or any other ref in ASME SEC VIII DIV 1

Thanks

Vishwas - IWE

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Friday, September 8, 2023

[MW:34536] VT test report and sample format as per ASME and DIN EN 5817

Dear Sir,

Anybody please share with visual testing & checking of welding procedure and sample to prepare the format(DIN EN 5817 OR ASME)

ALSO JOINING CYLINDRICAL SHELL TO SHELL THE OVER LAY GAP BETWEEN BOTH SHEELL SHOULD BE HOW MUCH TO KEEP ON STANDARD BASIS.

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Tuesday, September 5, 2023

Re: [MW:34533] Tensile re-test specimen requirement as per API 5L 46th Edition. Cl - 10.2.12.2 (b)

Just to add.

From the below it is self explanatory.

You can understand about the reheat coil below and many Pipes are produced from the Reheat Slab depending on the type of forming and heat treatment as below.

Thanks & Regards

J.Gerald Jayakumar

On Monday, 4 September, 2023 at 10:59:54 am IST, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:

According to my Interpretation,

1. Mother Coil is the initial Billet/Slab obtained from one Heat of the Furnace.

2. If 2 Heat Niumber (or 2 different rejeated slabs confirmed with Pipe Mill) exists the word should may be considered as shall else same Heat shall be used for testing.

Thanks & Regards

J.Gerald Jayakumar

On Monday, 4 September, 2023 at 08:41:14 am IST, Pravin Mohite <praveenss224@gmail.com> wrote:

Hi Experts,

Need your advise on the interpretation of statement referred in Cl - 10.2.12.2 (b) of API 5L 46th edition for tensile retest of Gr. X65M SAWL line pipe.

The statement of this clause which I am looking for your advise is - 'the retest specimen should be taken from two different mother coils or plate, as applicable'

Below are the queries on this statement :

1. For the word 'should' referred in this statement. Since as per API 5L terms, 'should' refers to recommended practice & does not make it mandatory to manufacturer to comply.

2. The term referred as 'mother Coils or plate'. Since specification doesn't referring the term as 'Mother Coils or Mother Plate' , I can consider the other daughter plates from mother plates to take retest samples.

My interpretation on the statement is -

'It is not mandatory for the manufacturer to take the retest sample from the two different mother plates. He can take retest samples from the other daughter plates of same mother plates from which initial tensile test specimen was taken '.

Requesting experts to advise on the interpretation of above statement and opinion about my interpretation.

With regards,

Pravin Mohite

+91 9664 232573

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Re: [MW:34531] Tensile re-test specimen requirement as per API 5L 46th Edition. Cl - 10.2.12.2 (b)

Dear Mr Pravin .

* should in API 5L is mandatory ... for X65 and higher retesting have a special requirements .. heats divided to slabs and each slab may has a different rolling conditions which reflect variation in mechanical properties .

So, API 5L is careful in this issue.

please also check the second mail i sent as a completion of 1st one regarding testing of the slab which has a failed sample

Best Regards ,

ENG. Ahmed Osman
TEL. Egypt +20 1225880434

TEL. KSA +966 534311070

On Monday, September 4, 2023 at 08:37:01 a.m. GMT+3, Ahmed Osman <a.osman81@yahoo.ca> wrote:

* if the mother plate have a lot of daughter plates " low thickness pipes " .. u can determine the 2 plates "before and after" the failed sample and testing them only instead of testing all daughter plates or eliminating them ( this is for the mother plate of failed sample )

Best Regards ,

ENG. Ahmed Osman
TEL. Egypt +20 1225880434

TEL. KSA +966 534311070

On Monday, September 4, 2023 at 08:29:59 a.m. GMT+3, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:

According to my Interpretation,

1. Mother Coil is the initial Billet/Slab obtained from one Heat of the Furnace.

2. If 2 Heat Niumber (or 2 different rejeated slabs confirmed with Pipe Mill) exists the word should may be considered as shall else same Heat shall be used for testing.

Thanks & Regards

J.Gerald Jayakumar

On Monday, 4 September, 2023 at 08:41:14 am IST, Pravin Mohite <praveenss224@gmail.com> wrote:

Hi Experts,

Need your advise on the interpretation of statement referred in Cl - 10.2.12.2 (b) of API 5L 46th edition for tensile retest of Gr. X65M SAWL line pipe.

The statement of this clause which I am looking for your advise is - 'the retest specimen should be taken from two different mother coils or plate, as applicable'

Below are the queries on this statement :

1. For the word 'should' referred in this statement. Since as per API 5L terms, 'should' refers to recommended practice & does not make it mandatory to manufacturer to comply.

My interpretation on the statement is -

Requesting experts to advise on the interpretation of above statement and opinion about my interpretation.

With regards,

Pravin Mohite

+91 9664 232573

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Monday, September 4, 2023

Re: [MW:34529] Tensile re-test specimen requirement as per API 5L 46th Edition. Cl - 10.2.12.2 (b)

Hi Mr. James,

Thanks for the response.

In my case the heat No. is the same but having number of mother plates and subsequently daughter plates.

With regards,

Pravin

On Mon, Sep 4, 2023 at 9:29 AM 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:

According to my Interpretation,

1. Mother Coil is the initial Billet/Slab obtained from one Heat of the Furnace.
2. If 2 Heat Niumber (or 2 different rejeated slabs confirmed with Pipe Mill) exists the word should may be considered as shall else same Heat shall be used for testing.

Thanks & Regards
J.Gerald Jayakumar

On Monday, 4 September, 2023 at 08:41:14 am IST, Pravin Mohite <praveenss224@gmail.com> wrote:

Hi Experts,

Need your advise on the interpretation of statement referred in Cl - 10.2.12.2 (b) of API 5L 46th edition for tensile retest of Gr. X65M SAWL line pipe.

The statement of this clause which I am looking for your advise is - 'the retest specimen should be taken from two different mother coils or plate, as applicable'

Below are the queries on this statement :
1. For the word 'should' referred in this statement. Since as per API 5L terms, 'should' refers to recommended practice & does not make it mandatory to manufacturer to comply.

2. The term referred as 'mother Coils or plate'. Since specification doesn't referring the term as 'Mother Coils or Mother Plate' , I can consider the other daughter plates from mother plates to take retest samples.

My interpretation on the statement is -
'It is not mandatory for the manufacturer to take the retest sample from the two different mother plates. He can take retest samples from the other daughter plates of same mother plates from which initial tensile test specimen was taken '.

Requesting experts to advise on the interpretation of above statement and opinion about my interpretation.

With regards,
Pravin Mohite
+91 9664 232573

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With Regards,

Pravin Mohite.

Cell - 9664232573.

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Re: [MW:34529] Tensile re-test specimen requirement as per API 5L 46th Edition. Cl - 10.2.12.2 (b)

Hi Mr. Ahmed,

Thanks for your response.

I do agree with the first point, but have a different opinion about the second point.

If I am taking re-test specimen from same mother plate from which initial test was failed, it is more stringent for me as I am taking a risk of re-failure and subsequent testing of each pipe it the test fails again

I am having in total ten mother plates (and 40 daughter plates) under same heat

Since API is referring in statement as 'should' it is not mandatory to take the re-test specimen from other mother plates

Kindly advise.

With regards,

Pravin

On Mon, Sep 4, 2023 at 9:29 AM 'Ahmed Osman' via Materials & Welding <materials-welding@googlegroups.com> wrote:

in case of tensile sample failed

1- the mother plate of failed sample to be tested individually " per pipe " or eliminated from production
2- the remaining pipes from the heat " testing unit " to be tested by:
* taking 2 extra samples from 2 different mother plates other than the failed one
* if the extra 2 samples passed " Ok " for the heat
* if one sample failed , testing will be individually " per pipe "

Best Regards ,
ENG. Ahmed Osman
TEL. Egypt +20 1225880434
TEL. KSA +966 534311070

On Monday, September 4, 2023 at 06:11:17 a.m. GMT+3, Pravin Mohite <praveenss224@gmail.com> wrote:

Hi Experts,

Need your advise on the interpretation of statement referred in Cl - 10.2.12.2 (b) of API 5L 46th edition for tensile retest of Gr. X65M SAWL line pipe.

The statement of this clause which I am looking for your advise is - 'the retest specimen should be taken from two different mother coils or plate, as applicable'

Below are the queries on this statement :
1. For the word 'should' referred in this statement. Since as per API 5L terms, 'should' refers to recommended practice & does not make it mandatory to manufacturer to comply.

2. The term referred as 'mother Coils or plate'. Since specification doesn't referring the term as 'Mother Coils or Mother Plate' , I can consider the other daughter plates from mother plates to take retest samples.

My interpretation on the statement is -
'It is not mandatory for the manufacturer to take the retest sample from the two different mother plates. He can take retest samples from the other daughter plates of same mother plates from which initial tensile test specimen was taken '.

Requesting experts to advise on the interpretation of above statement and opinion about my interpretation.

With regards,
Pravin Mohite
+91 9664 232573

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With Regards,

Pravin Mohite.

Cell - 9664232573.

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