[MW:34920] Tubesheet Hole step

Hello Team,

I have one question any tolerance given for tubesheet Hole step.

Please do needful.

Regards,

AP 

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Re: [MW:34921] Tubesheet Hole step

For tube sheet hole groove, Refer TEMA standard clause RB-7.2.4 Tube Hole grooving

On Sun, Apr 28, 2024, 12:33 Patel Ankit <aapatel271@gmail.com> wrote:

Hello Team,

I have one question any tolerance given for tubesheet Hole step.

Please do needful.

Regards,

AP 

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Re: [MW:34922] Tubesheet Hole step

Hello sir,

I am asking for tubesheet Hole grooving step.

Example : Tubesheet hole groove depth given 10.2 & 16.2 mm according. Any tolerance given in tema ??

Regards,

AP.

On Sun, Apr 28, 2024, 14:38 Shahil Saini <sainishahil98@gmail.com> wrote:

For tube sheet hole groove, Refer TEMA standard clause RB-7.2.4 Tube Hole grooving

On Sun, Apr 28, 2024, 12:33 Patel Ankit <aapatel271@gmail.com> wrote:

Hello Team,

I have one question any tolerance given for tubesheet Hole step.

Please do needful.

Regards,

AP 

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[MW:34923] API 1104 WELDER QUALIFICATION

Hi All,

If I qualify a pipe welder in 6G position as per API 1104, is he qualified to weld in 5G position. Please note as per API 1104 not ASME.

Regards, 

Thulaib 

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Re: [MW:34924] API 1104 WELDER QUALIFICATION

Yes, it's qualified in 5g also

Thanks & Best Regards
Saleem manhappulath

Mob:+966533595849
WhatsApp:+919526445936

From iPhone xs

On Sun, 28 Apr 2024 at 8:23 PM thulaib arakkal <thulaibwelding@gmail.com> wrote:

Hi All,

If I qualify a pipe welder in 6G position as per API 1104, is he qualified to weld in 5G position. Please note as per API 1104 not ASME.

Regards, 

Thulaib 

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Re: [MW:34925] API 1104 WELDER QUALIFICATION

Yes he qualifies all positions 

Thanks and Regards,

K.S.Unnikrishnan

Kollara

On 28-Apr-2024, at 9:23 PM, thulaib arakkal <thulaibwelding@gmail.com> wrote:



Hi All,

If I qualify a pipe welder in 6G position as per API 1104, is he qualified to weld in 5G position. Please note as per API 1104 not ASME.

Regards, 

Thulaib 

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Re: [MW:34925] API 1104 WELDER QUALIFICATION

Yes, 

On Sun, 28 Apr 2024 at 19:23 thulaib arakkal <thulaibwelding@gmail.com> wrote:

Hi All,

If I qualify a pipe welder in 6G position as per API 1104, is he qualified to weld in 5G position. Please note as per API 1104 not ASME.

Regards, 

Thulaib 

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Re: [MW:34927] Applicability of Impact requirement as per ASME B31.3

Hi, As per ASME B31.3, Table A1-M,  -46 Deg Celsius is the minimum temperature applicable without impact test.

But Please consider the below note description also before concluding. It is better to do an impact test below -29 degree celsius.

On Wed, Apr 24, 2024 at 4:29 PM 'vinit vani' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Dear All,

Design code – ASME B31.3, Welding Code- ASME BPVC SEC IX

Material  to be used used during Fabrication - SA 333Gr6 (P No.1 Gr. 1) To SA 350-LF2 (P No.1 Gr. 2)

Production Thickness range-5.54mm(Minimum)-9.53mm(Maximum)

PWHT – Nil

MDMT-= -45 Deg Cel.

Kindly give your valuable suggestions for applicability of PQR impact requirement for above details.

Pl.reply with code clause.

Thanks & Regards

Vinit

India

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Re: [MW:34928] API 1104 WELDER QUALIFICATION

Dear,

Yes, according to API 1104, if a pipe welder is qualified in the 6G position, they are generally considered qualified to weld in the 5G position as well. API 1104 typically covers welding standards and procedures for pipeline welding, and it doesn't specifically differentiate between 5G and 6G positions in terms of qualification requirements for welders. Therefore, a qualification in the more challenging 6G position typically implies proficiency in welding positions of equal or lesser difficulty, such as the 5G position. However, it's always essential to review the specific requirements of API 1104 and any relevant project specifications to ensure compliance.

Best regards,

Amol K.B

B.E(Mech), CSWIP 3.2.2, NACE CIP 1 & ASNT LII(4M)

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[MW:34929] ASME SEC VIII Div1- UG-36 & UG-42 Nozzles RF pad requirements & mulitiple Nozzles opening

Dear all,

Kindly refer to the attached images of the 

2 instrument air vessels.

one vessel 6" nozzles with reinforcement pad and other one same 6" nozzles without RF pad. Top head diameter, design pressure, head thickness , nozzle to head weld is internal portrusion with back side welding also same

From UG-36 above 10mm thickness only 2.3/8" ID nozzles can fabricate with out reinforcement pad.

Queries:

1. 6" nozzles required RF pad or not? With details explain 

2. 6" nozzles in-between 2" nozzles with maintain 500mm centre to distance - min distance requirements.

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Re: [MW:34930] API 1104 WELDER QUALIFICATION

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635

On Sunday, 28 April, 2024 at 10:53:21 pm IST, thulaib arakkal <thulaibwelding@gmail.com> wrote:

Hi All,

If I qualify a pipe welder in 6G position as per API 1104, is he qualified to weld in 5G position. Please note as per API 1104 not ASME.

Regards, 

Thulaib 

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[MW:34930] Re:

Dual grade complied type 316 and 316L.

- Chemical composing of %C: < 0.03%, and

- Min. YS: 205 MPa.

Regards

On Thursday, April 25, 2024 at 4:35:46 PM UTC+7 kumar sumit wrote:

Dear expert, 

                      What is the meaning of dual grade lile 316/316L. Van anyone explain. 

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Re: [MW:34932] Re:

316 -   C:0.08max  UTS : min 75ksi

316L - C:0.03 max UTS : min 70ksi

For dual certified both the conditions to be satisfied.

Dual certified 316/316L   - C: 0.03 max  UTS : min 75ksi

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635

On Monday, 29 April, 2024 at 08:05:51 pm IST, duybien.com <bck055@gmail.com> wrote:

Dual grade complied type 316 and 316L.

- Chemical composing of %C: < 0.03%, and

- Min. YS: 205 MPa.

Regards

On Thursday, April 25, 2024 at 4:35:46 PM UTC+7 kumar sumit wrote:

Dear expert, 

                      What is the meaning of dual grade lile 316/316L. Van anyone explain. 

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Re: [MW:34933] ASME SEC VIII Div1- UG-36 & UG-42 Nozzles RF pad requirements & mulitiple Nozzles opening

Dear,

Let's address each query with detail:

1. 6" nozzles required RF pad or not? According to the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, specifically in UG-36, when the thickness of the vessel wall exceeds 10 mm (or 0.394 inches), reinforcement pads are typically required for nozzles larger than 2 3/8" ID. However, there are exceptions based on specific design considerations and loadings.

   In the case of the vessels you mentioned, if the thickness of the vessel wall where the 6" nozzles are located exceeds 10 mm, then RF pads may be required. The decision to use RF pads depends on factors such as the design pressure, vessel material, service conditions, and nozzle loads. RF pads help distribute the stresses and loads at the nozzle-to-vessel junction, enhancing the structural integrity of the vessel.

   Engineers and fabricators need to conduct detailed stress analysis and consider factors like nozzle loads, internal and external pressures, thermal effects, and the mechanical properties of the vessel material to determine whether RF pads are necessary. Additionally, industry standards and codes may provide further guidance specific to the application.

2. 6" nozzles in-between 2" nozzles with maintaining 500mm center-to-center distance - minimum distance requirements: Maintaining adequate spacing between nozzles is crucial to ensure proper operation, maintenance access, and structural integrity of the vessel. The minimum distance between two nozzles depends on various factors, including vessel design, nozzle size, nozzle type, and applicable codes and standards.

   In the scenario you described, where 6" nozzles are positioned between 2" nozzles with a specified center-to-center distance of 500 mm, it's essential to confirm whether this distance meets the minimum requirements outlined in the relevant design codes and standards, such as ASME BPVC Section VIII, Division 1.

   Typically, the minimum distance between two nozzles is determined to prevent interference, facilitate maintenance activities, and ensure proper reinforcement of the vessel walls around each nozzle. Factors such as the diameter and orientation of the nozzles, nozzle loads, and vessel geometry influence the minimum spacing requirements.

   Engineers and designers should refer to the applicable design codes, conduct stress analyses, and consider specific project requirements to determine the suitable spacing between the 6" and 2" nozzles. If the specified center-to-center distance of 500 mm meets or exceeds the minimum requirements specified in the applicable codes and standards, it should be acceptable. However, it's crucial to verify this through thorough engineering analysis and review.

Regards,

Amol K.B

On Mon, 29 Apr 2024 at 18:55, Ponnikumar <k.ponni1994@gmail.com> wrote:

Dear all,

Kindly refer to the attached images of the 

2 instrument air vessels.

one vessel 6" nozzles with reinforcement pad and other one same 6" nozzles without RF pad. Top head diameter, design pressure, head thickness , nozzle to head weld is internal portrusion with back side welding also same

From UG-36 above 10mm thickness only 2.3/8" ID nozzles can fabricate with out reinforcement pad.

Queries:

1. 6" nozzles required RF pad or not? With details explain 

2. 6" nozzles in-between 2" nozzles with maintain 500mm centre to distance - min distance requirements.

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Best regards,

Amol K.B

B.E(Mech), CSWIP 3.2.2, NACE CIP 1 & ASNT LII(4M)

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Re: [MW:34933] Re:

Dear,

Dual grade stainless steel, like 316/316L, refers to a type of stainless steel that contains a mixture of two grades within one material. In this case, 316/316L indicates a combination of 316 stainless steel and its low carbon version, 316L.

316 stainless steel is a widely used grade known for its excellent corrosion resistance, particularly in acidic environments. It's commonly used in industries like marine, chemical processing, and pharmaceuticals.

316L is a variant of 316 stainless steel with a lower carbon content, which enhances its weldability. This makes it more suitable for applications where welding is involved, as it reduces the risk of carbide precipitation and consequent corrosion in the heat-affected zones of welded joints.

So, when you see "316/316L," it means you're getting the best of both worlds: the corrosion resistance of 316 stainless steel and the improved weldability of 316L. This dual-grade approach allows for greater versatility in various applications while maintaining the desired properties.

Regards,

Amol K.B

On Mon, 29 Apr 2024 at 20:05, duybien.com <bck055@gmail.com> wrote:

Dual grade complied type 316 and 316L.

- Chemical composing of %C: < 0.03%, and

- Min. YS: 205 MPa.

Regards

On Thursday, April 25, 2024 at 4:35:46 PM UTC+7 kumar sumit wrote:

Dear expert, 

                      What is the meaning of dual grade lile 316/316L. Van anyone explain. 

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Amol K.B

B.E(Mech), CSWIP 3.2.2, NACE CIP 1 & ASNT LII(4M)

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[MW:34919] Welder qualification certificate

Dear All

    anyone can share a format for welder certificate and card format 

     

Thanks & Best Regards
Saleem manhappulath

Mob:+966533595849
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[MW:34916] Applicability of Impact requirement as per ASME B31.3

Dear All,

Design code – ASME B31.3, Welding Code- ASME BPVC SEC IX

Material  to be used used during Fabrication - SA 333Gr6 (P No.1 Gr. 1) To SA 350-LF2 (P No.1 Gr. 2)

Production Thickness range-5.54mm(Minimum)-9.53mm(Maximum)

PWHT – Nil

MDMT-= -45 Deg Cel.

Kindly give your valuable suggestions for applicability of PQR impact requirement for above details.

Pl.reply with code clause.

Thanks & Regards

Vinit

India

Re: [MW:34917] Applicability of Impact requirement as per ASME B31.3

Dear Vinit,

For the applicability of PQR impact requirements based on the provided details, we need to refer to the ASME Boiler and Pressure Vessel Code (BPVC) Section IX, which covers welding qualifications.

Since you're dealing with welding and materials in the context of ASME BPVC Section IX, the specific clause relevant to your scenario would be Clause QW-402.2. This clause outlines the impact test requirements for procedure qualification.

Based on the information provided:

1. Material: SA 333Gr6 (P No.1 Gr. 1) to SA 350-LF2 (P No.1 Gr. 2)
2. Thickness range: 5.54mm (Minimum) - 9.53mm (Maximum)
3. PWHT: Nil
4. MDMT: -45 Deg Cel.

Given these details, you would need to assess if impact testing is required for the welding procedure qualification. The decision would depend on factors such as the material specification, thickness, service conditions, and design requirements.

According to ASME BPVC Section IX, if the design temperature is equal to or colder than the Minimum Design Metal Temperature (MDMT) of the material, impact testing may be required. In your case, the MDMT is -45 Deg Cel., and since the design temperature is not mentioned, it's essential to evaluate whether it's equal to or colder than -45 Deg Cel.

Furthermore, Clause QW-403.6 provides exemptions from impact testing for certain materials, thicknesses, and service conditions. It's crucial to review this clause to see if any exemptions apply to your specific scenario.

Ultimately, the applicability of PQR impact requirements would depend on a detailed assessment of the specific welding procedure, material properties, thicknesses, and design conditions, in accordance with the ASME BPVC Section IX.

Regards,

Amol K.Betkar

On Wed, 24 Apr 2024 at 18:59, 'vinit vani' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Dear All,

Design code – ASME B31.3, Welding Code- ASME BPVC SEC IX

Material  to be used used during Fabrication - SA 333Gr6 (P No.1 Gr. 1) To SA 350-LF2 (P No.1 Gr. 2)

Production Thickness range-5.54mm(Minimum)-9.53mm(Maximum)

PWHT – Nil

MDMT-= -45 Deg Cel.

Kindly give your valuable suggestions for applicability of PQR impact requirement for above details.

Pl.reply with code clause.

Thanks & Regards

Vinit

India

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Best regards,

Amol K.B

B.E(Mech), CSWIP 3.2.2, NACE CIP 1 & ASNT LII(4M)

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[MW:34918]

Dear expert, 

                      What is the meaning of dual grade lile 316/316L. Van anyone explain. 

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Re: [MW:34913] Filler wire

E71T-1C  is Charpy Impact tested at -20degC

E71T-1CJ is Charpy impact tested at -40degC.

AWS Classification for FCAW is only a supplementary requirement applicable only when Impact test is required.

If charpy impact test is not required then you can use E71T-1C in place of E71T-1CJ

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635

On Sunday, 21 April, 2024 at 11:02:44 am IST, saleem manhappulath <saleemm9526@gmail.com> wrote:

Dear Experts 

     We have wps it's mentioned filler wire E71T-1CJ, but in the market available only E71T-1C. What is the difference between two filler wire and can we use E71T-1C instead of 1CJ

Thanks & Best Regards
Saleem manhappulath

Mob:+966533595849
WhatsApp:+919526445936

From iPhone xs

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Re: [MW:34914] Filler wire

Dear Sir

     Could you share, where it's mentioned 

Thanks & Best Regards
Saleem manhappulath

Mob:+966533595849
WhatsApp:+919526445936

From iPhone xs

On Sun, 21 Apr 2024 at 9:04 AM 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:

E71T-1C  is Charpy Impact tested at -20degC

E71T-1CJ is Charpy impact tested at -40degC.

AWS Classification for FCAW is only a supplementary requirement applicable only when Impact test is required.

If charpy impact test is not required then you can use E71T-1C in place of E71T-1CJ

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635

On Sunday, 21 April, 2024 at 11:02:44 am IST, saleem manhappulath <saleemm9526@gmail.com> wrote:

Dear Experts 

     We have wps it's mentioned filler wire E71T-1CJ, but in the market available only E71T-1C. What is the difference between two filler wire and can we use E71T-1C instead of 1CJ

Thanks & Best Regards
Saleem manhappulath

Mob:+966533595849
WhatsApp:+919526445936

From iPhone xs

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Re: [MW:34915] Filler wire

Dear saleem,

Please refer attached image,

Regards,

Shahil 

On Sun, Apr 21, 2024, 10:39 saleem manhappulath <saleemm9526@gmail.com> wrote:

Dear Sir

     Could you share, where it's mentioned 

Thanks & Best Regards
Saleem manhappulath

Mob:+966533595849
WhatsApp:+919526445936

From iPhone xs

On Sun, 21 Apr 2024 at 9:04 AM 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote:

E71T-1C  is Charpy Impact tested at -20degC

E71T-1CJ is Charpy impact tested at -40degC.

AWS Classification for FCAW is only a supplementary requirement applicable only when Impact test is required.

If charpy impact test is not required then you can use E71T-1C in place of E71T-1CJ

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635

On Sunday, 21 April, 2024 at 11:02:44 am IST, saleem manhappulath <saleemm9526@gmail.com> wrote:

Dear Experts 

     We have wps it's mentioned filler wire E71T-1CJ, but in the market available only E71T-1C. What is the difference between two filler wire and can we use E71T-1C instead of 1CJ

Thanks & Best Regards
Saleem manhappulath

Mob:+966533595849
WhatsApp:+919526445936

From iPhone xs

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