Re: [MW:35686] HDPE WPS

Refer ASME SEC IX 

There is separate chapter for Plastic welding .

Based on that you have to prepare 

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On 21 Jun 2025, at 7:48 AM, Sudharsan Sathianathan <sudha.lalsss@gmail.com> wrote:



Dear friends,

I need to prepare a WPS for the HDPE liner pipes. As any body have it, kindly share it with me. 

Thanks in advance.

Regards,

Sudharsan S

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[MW:35687] Qualification of Unlisted materials using AWS D 1.1 - 2020Ed - reg

Dear all , 

I have a situation to Qualify single Bevel CJP - API 5L X 65 pipe with Plate API 2W Gr.50 PL1 , using structural Welding code AWS D 1.1. 

The Problem is API 5L X 65 is unlisted in AWS D 1.1 and API 2W is listed in Group 3.

AWS D1.1 says , PQR using any unlisted materials shall qualify for that particular combination only.

which means i have to go for pipe and plate combination for PQR. Curious to know whther anyone have done PQR for this situation?, If so pls throw some light..

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[MW:35688] Clarification on ASME B31.3 Section 331.2.4 – Cooling Rate Control Prior to PWHT

Dear experts, 

I am seeking clarification regarding the application of ASME B31.3 Section 331.2.4, which states:

"If a weldment is allowed to cool prior to heat treatment, the rate of cooling shall be controlled or other means shall be used to prevent detrimental effects in the piping."

1 Is this requirement mandatory in all cases (Even for P1 materials) where PWHT is performed after a delay of several days following welding?
2 If so, what are the accepted methods for controlling the cooling rate prior to heat treatment as per this clause?

Your guidance on best practices and code interpretation for this requirement would be greatly appreciated.

Thank you in advance for your assistance.

Best regards,

Binto George

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Re: [MW:35689] Clarification on Pressure Drop During Hydro test Due to Temperature Variation

With increase in temperature fluid expands causing pressure increase .  Also significant pressure variation can be expected when fluid is compressible. Can you please specify about  fluid and test temperature?

On Sat, 7 Jun 2025 at 18:12, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:

Pressure Directly proportional to Temperature when Volume is constant 

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015, ISO 3834, EN 15085, 

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Sat, 7 Jun 2025, 10:36 Vinoth Kanna, <gvinoth43@gmail.com> wrote:

Dear Experts,

During a hydrostatic test, we observed a gradual pressure drop of approximately 0.7 bar in a 2-inch pipe with a length of 31 meters. The test pressure was 12.5 bar. This issue has occurred in multiple tests.

We request your explanation regarding the relationship between pressure and temperature, and how temperature variations can affect hydrotest results.Also, we seek clarification on the acceptable pressure drop limits considering potential temperature changes during the test.

Thank you for your support.

Regards,

Vinoth G

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Re: [MW:35690] Qualification of Unlisted materials using AWS D 1.1 - 2020Ed - reg

Pl qualify the combination in line with Drawing .

On Sat, 21 Jun 2025 at 12:10 PM, nagendran natarajan <nagend3484@gmail.com> wrote:

Dear all , 

I have a situation to Qualify single Bevel CJP - API 5L X 65 pipe with Plate API 2W Gr.50 PL1 , using structural Welding code AWS D 1.1. 

The Problem is API 5L X 65 is unlisted in AWS D 1.1 and API 2W is listed in Group 3.

AWS D1.1 says , PQR using any unlisted materials shall qualify for that particular combination only.

which means i have to go for pipe and plate combination for PQR. Curious to know whther anyone have done PQR for this situation?, If so pls throw some light..

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[MW:35668] Selection of Filler/Electrode.

Dear Gentlemen,

Kindly advise me as we have tube to tubesheet joint.

Tube moc is incoloy 800

And tubesheet moc is F53 SDSS (Super duplex stainless steel).

For incoloy-800 -- P NO : 45

For F53 SDSS-- P NO: 10H

Which filler wire is applicable please suggest.

Best Regards,

John 

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[MW:35669] Clarification on Pressure Drop During Hydro test Due to Temperature Variation

Dear Experts,

During a hydrostatic test, we observed a gradual pressure drop of approximately 0.7 bar in a 2-inch pipe with a length of 31 meters. The test pressure was 12.5 bar. This issue has occurred in multiple tests.

We request your explanation regarding the relationship between pressure and temperature, and how temperature variations can affect hydrotest results.Also, we seek clarification on the acceptable pressure drop limits considering potential temperature changes during the test.

Thank you for your support.

Regards,

Vinoth G

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Re: [MW:35670] Selection of Filler/Electrode.

For best results, use AWS A 5.14 ER Ni Cr-3 (Incoloy 800) filler wire for the weld metal when joining the Incoloy 800 tube to Super Duplex 

F53 SDSS tube sheet. This filler wire provides good compatibility with both materials, accommodates differences in thermal stability, and 

maintains corrosion resistance and mechanical strength. 

Alternatively, AWS A 5.14 ERNiCrMo-3 (Inconel 625) could be used for a Chloride rich or acidic atmosphere.

rgds,

C Sridhar.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

On Sat, 7 Jun 2025 at 09:28, HerculanJohn <hjpr820@gmail.com> wrote:

Dear Gentlemen,

Kindly advise me as we have tube to tubesheet joint.

Tube moc is incoloy 800

And tubesheet moc is F53 SDSS (Super duplex stainless steel).

For incoloy-800 -- P NO : 45

For F53 SDSS-- P NO: 10H

Which filler wire is applicable please suggest.

Best Regards,

John 

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Re: [MW:35672] CRA

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On 5 Jun 2025, at 2:03 PM, Raviraj Gohil <raviraj.gohil001@gmail.com> wrote:



Hi..

If your equipment in hydrogen service and Hydrogen Disbonding test is required..

On Wed, 4 Jun 2025, 14:26 Deerendra Karanth, <dkaranths@gmail.com> wrote:

Sir, 

With reference to your query regarding the required tests for corrosion resistant overlay procedure and performance qualification as per ASME Section IX, Table QW-453, in addition to the mentioned LPT and bend tests, the following supplementary tests are recommended—especially considering the application for overlay:

1. Chemical Analysis – As per ASME Section IX Figure QW-462.5(a) to verify composition of the deposited layer. Attached snapshot 

2. Hardness Survey – In accordance with NACE MR0175 to ensure compatibility with sour service, if applicable.

3. Metallographic Examination – To assess overlay quality, dilution, and fusion characteristics.

4. Microstructure Examination – Typically conducted at 100X to 500X magnification.

5. Ultrasonic Testing (UT) – To check for disbondment between the base metal and overlay.

Please ensure these tests are reviewed in alignment with project or client-specific requirements.

BR, 

Deerendra 

<gmail_images20250604_142122.png>

On Wed, 4 Jun, 2025, 13:50 Elavarasan Mech, <elavarasan1861994@gmail.com> wrote:

Dear all 

Please clarify below 

What's are the test required for corrosion resistant overlay 

procedure and performance qualification

As per ASME SEC IX TABLE QW -453 

LPT , BEND TEST -PROCEDURE QUALIFICATION 

BEND TEST - PERFORMANCE QUALIFICATION 

if any additional test required  please gudie me 

We useing this PQR for flange groove overlay 

Regards 

ELAVARASAN

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Re: [MW:35671] Clarification on Pressure Drop During Hydro test Due to Temperature Variation

Pressure Directly proportional to Temperature when Volume is constant 

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015, ISO 3834, EN 15085, 

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Sat, 7 Jun 2025, 10:36 Vinoth Kanna, <gvinoth43@gmail.com> wrote:

Dear Experts,

During a hydrostatic test, we observed a gradual pressure drop of approximately 0.7 bar in a 2-inch pipe with a length of 31 meters. The test pressure was 12.5 bar. This issue has occurred in multiple tests.

We request your explanation regarding the relationship between pressure and temperature, and how temperature variations can affect hydrotest results.Also, we seek clarification on the acceptable pressure drop limits considering potential temperature changes during the test.

Thank you for your support.

Regards,

Vinoth G

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