[MW:30335] Re: P8 material limit of as per QW-403.6

  Dear experts,

I have qualified PQR of Thickness-6mm (P8G1) Austenitic stainless steel, & What is the minimum and max.thickness qualified  as Per QW-403.6.in WPS (for Impact).

Regards,

DHAKSHNAMOORTHY.J

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Re: [MW:30335] MAWP vs Design Pressure

Design Pressure is always less than MAWP.

Best Regards,

Shashank C Vagal (+91) 8082395502, 8779046302,

301, PRATHAMESH, M G Rd – Mahant Rd, Vile Parle East, Mumbai 400 057 INDIA

On Friday, 27 December, 2019, 11:45:45 am IST, <ibrahimkodssi@gmail.com> wrote:

What is the difference between Maximum allowable working pressure (MAWP) and the design pressure?

I've looked up several resources but could not find it. Also i found that MAWP and design pressure may be equal in some cases.

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Re: [MW:30335] PSV Testing

I have checked  ASME VIII-1 UG-136 d)2)-it is not clear that  "Body and bonnet is tested at the outlet flange pressure rating."

Regards,

Venkatramulu CHILUKA

On Sat, Dec 28, 2019 at 2:19 PM Johnson Madukayil <jmadukayil@gmail.com> wrote:

Body and bonnet is tested at the outlet flange pressure rating.

Check ASME VIII-1 UG-136 d)2)

On Tue, Dec 24, 2019 at 3:39 AM Eyup Tan <eyuptan@gmail.com> wrote:

API 526

2.3 Valve Selection

For valves described in this standard, inlet and outlet
flange sizes and pressure-temperature ratings shall conform
to the data in Tables 2 through 15 for spring-loaded valves
and Tables 16 through 29 for pilot-operated valves. Inlet and
outlet pressure limits are governed by the flange
pressure/temperature limits or by the manufacturer's design
limits, whichever is lower.

Saygılarımla, / Best Regards,

Eyup Tan

Mobile: +90 535 334 4912

On Tue, Dec 24, 2019 at 8:23 AM chiluka venkatramulu <ramuluchiluka@gmail.com> wrote:

Can you give me any code reference pl.

Regards,

Venkatramulu CH

On Tue, Dec 24, 2019 at 9:07 AM Eyup Tan <eyuptan@gmail.com> wrote:

#600 rating because #600 flange for inlet and #300 is for outlet (exhaust) flange

Regards 

Eyup Tan

iPhone'umdan gönderildi

chiluka venkatramulu <ramuluchiluka@gmail.com> şunları yazdı (24 Ara 2019 06:08):



Dear All,

If PSV having flange rating 300 X 600, which rating is considered for testing Body & Bonnet, as per B16.34.

With Best Regards,

Venkatramulu CH

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Re: [MW:30330] PSV Testing

Body and bonnet is tested at the outlet flange pressure rating.

Check ASME VIII-1 UG-136 d)2)

On Tue, Dec 24, 2019 at 3:39 AM Eyup Tan <eyuptan@gmail.com> wrote:

API 526

2.3 Valve Selection

For valves described in this standard, inlet and outlet
flange sizes and pressure-temperature ratings shall conform
to the data in Tables 2 through 15 for spring-loaded valves
and Tables 16 through 29 for pilot-operated valves. Inlet and
outlet pressure limits are governed by the flange
pressure/temperature limits or by the manufacturer's design
limits, whichever is lower.

Saygılarımla, / Best Regards,

Eyup Tan

Mobile: +90 535 334 4912

On Tue, Dec 24, 2019 at 8:23 AM chiluka venkatramulu <ramuluchiluka@gmail.com> wrote:

Can you give me any code reference pl.

Regards,

Venkatramulu CH

On Tue, Dec 24, 2019 at 9:07 AM Eyup Tan <eyuptan@gmail.com> wrote:

#600 rating because #600 flange for inlet and #300 is for outlet (exhaust) flange

Regards 

Eyup Tan

iPhone'umdan gönderildi

chiluka venkatramulu <ramuluchiluka@gmail.com> şunları yazdı (24 Ara 2019 06:08):



Dear All,

If PSV having flange rating 300 X 600, which rating is considered for testing Body & Bonnet, as per B16.34.

With Best Regards,

Venkatramulu CH

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[MW:30330] MAWP vs Design Pressure

Thank you in advance for answering.

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Re: [MW:30330] Re: Selection of 10%weld joints of pipeline

Please not readable

On Fri, Dec 27, 2019, 11:45 Jason <haiyuqingkong@gmail.com> wrote:

B31.3

在 2019年12月7日星期六 UTC+3上午8:40:13，Aakash写道：

Hello expert ,
We are having 10% RT, pipe size is 16inch, please suggest should I select one complete joint or one segment of all the joints. Please provide the codal reference if any ?

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Re: [MW:30330] MAWP vs Design Pressure

The thicknesses used are generally do not match exactly designed values for reasons of availability, form etc. Even materials with better properties may be at times substituted. On  back calculation, the design values the equipment can be subjected to would be higher in proportion to the better specifications used over the one in the design calculation. The minimum value of this back calculated value for all the components is the MAWP. If such back calculation is not done  MAWP becomes design pressure. MAWP is very important in sizing safety fittings.

On Fri, 27 Dec 2019 at 11:45, <ibrahimkodssi@gmail.com> wrote:

What is the difference between Maximum allowable working pressure (MAWP) and the design pressure?

I've looked up several resources but could not find it. Also i found that MAWP and design pressure may be equal in some cases.

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Re: [MW:30330] Re: Filler material Selection

While welding CS with 316, ( chemistry 19Cr+12Ni), there is loss in Cr and Ni more 316 when compare with 309( 24Cr+13). For maintaining austenetic structure in ASS( as per code B31.1, which is attached) minimum requirement of Ni is 8, which may not be achievable with 316. So, it is better to use 309 instead of 316

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,

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Fri, Dec 27, 2019 at 11:45 AM Jason <haiyuqingkong@gmail.com> wrote:

ASTM A106 Gr.B  is Carbon steel，E316L electrodes are used for stainless steel

在 2019年12月23日星期一 UTC+3上午8:25:39，Navanith写道：

Dear Experts,

Require guidance on filler material selection as per ASME BPVC.

For example:I received this query from a client

Base metal is ASTM A106 Gr.B and they want to weld using E316L electrodes.

Is it possible to use E316L electrodes to weld directly?

Regards,

Navanith

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[MW:30324] Re: Selection of 10%weld joints of pipeline

B31.3

在 2019年12月7日星期六 UTC+3上午8:40:13，Aakash写道：

Hello expert ,
We are having 10% RT, pipe size is 16inch, please suggest should I select one complete joint or one segment of all the joints. Please provide the codal reference if any ?

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[MW:30324] Re: Filler material Selection

ASTM A106 Gr.B  is Carbon steel，E316L electrodes are used for stainless steel

在 2019年12月23日星期一 UTC+3上午8:25:39，Navanith写道：

Dear Experts,

Require guidance on filler material selection as per ASME BPVC.

For example:I received this query from a client

Base metal is ASTM A106 Gr.B and they want to weld using E316L electrodes.

Is it possible to use E316L electrodes to weld directly?

Regards,

Navanith

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[MW:30324] MAWP vs Design Pressure

What is the difference between Maximum allowable working pressure (MAWP) and the design pressure?

I've looked up several resources but could not find it. Also i found that MAWP and design pressure may be equal in some cases.

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[MW:30324] braze welidng procedure qualification

Dear All.

With regard to braze welding not defined in ASME IX, based on which chapter(QW or QB) or another standard would be qualified?

Regards.

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Re: [MW:30324] PSV set pressure during hydrotest of piping

Hi, 

Expert, please see the below your answer...as per Saudi Aramco Standard, SAES-A-004 Para 5.7.

Protection from Overpressure
All systems (piping and equipment) while being pressure tested shall be protected from being over pressured by the following:

Pressure test relief valve(s) of adequate capacity set to relieve at 5% above the test pressure shall be installed unless the test pressure is less than 85% SMYS at which time it can be set at 10% above the test pressure. Sizing of these relief valves used for testing shall follow the requirements of API RP 520, Part 1. The relief valve(s) shall be tested, dated, and tagged within two weeks prior to the pressure test for new construction projects, and within three months for maintenance operations.
The pressure test relief valve shall be accompanied with a calibration certificate that includes the cold differential test pressure (CDTP), test date and the spring range. The CDTP shall be within the spring range.
Pressure testing relief valves shall be car sealed at the pressure adjusting screw and verified prior to test.

Thank you for your consideration. I look forward to hearing from you. Your Immediate Response will be Highly Appreciated.

Best Regards

Shrichand Ghanshyam Bathv 

Mobile Number : +91 8551911459

Email Id : shrichand.bathv@gmail.com 

Skype Id : shrichand.bathv 

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On Thu, Dec 26, 2019 at 2:19 PM Balajirajan Palanisamy <pbrerode@gmail.com> wrote:

Dear Mr. Manoj,

   During the Hydro test the set pressure of PSV that you had fixed in the manifold will be as 1.1 times of the line test pressure i.e 10% higher than the line test pressure. 

Regards,

P.Balajirajan.

On Tue, Dec 24, 2019 at 11:59 AM Eyup Tan <eyuptan@gmail.com> wrote:

You should blank PSV during the hydro test or remove PSV from line/equipment. 

Because PSV set pressure is adjusted to %10 above of MAWP. But hydrostatic Test Pressure is 1,5 times of MAWP.

You can't make hydrostatic test 1,5 times of MAWP because PSV will open when pressure comes to 1.1 times of MAWP. 

That is why you need to blank or remove PSV during the hydro test

Saygılarımla, / Best Regards,

Eyup Tan

Mobile: +90 535 334 4912

On Tue, Dec 24, 2019 at 11:14 AM ViNo Varughese <vinopvarghese@gmail.com> wrote:

Dear Manoj,

Please check through API RP 520 and you should find the set pressure requirement for PRVs. Typically it is set based on the MAWP or  design pressure. However you also need to consider the static head between the protected equipment and the relied valve while deriving the set pressure.

Hope this helps.

Thanks and Regards

Vino

On Tue, Dec 24, 2019, 08:23 Manoj John <manojacgnr@gmail.com> wrote:

Dear Experts,

As per B31.3 what is the PSV set pressure during hydrotest.

Please give expert opinion as there is no clause found in B31.3 for hydrotest PSV set pressure, PSV set pressure for pneumatic only prescribed.

Thanks in advance,

Manoj

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Re: [MW:30324] PSV set pressure during hydrotest of piping

Dear P.Balajirajan do you have any reference??

On Thu, 26 Dec 2019, 3:19 PM Balajirajan Palanisamy, <pbrerode@gmail.com> wrote:

Dear Mr. Manoj,

   During the Hydro test the set pressure of PSV that you had fixed in the manifold will be as 1.1 times of the line test pressure i.e 10% higher than the line test pressure. 

Regards,

P.Balajirajan.

On Tue, Dec 24, 2019 at 11:59 AM Eyup Tan <eyuptan@gmail.com> wrote:

You should blank PSV during the hydro test or remove PSV from line/equipment. 

Because PSV set pressure is adjusted to %10 above of MAWP. But hydrostatic Test Pressure is 1,5 times of MAWP.

You can't make hydrostatic test 1,5 times of MAWP because PSV will open when pressure comes to 1.1 times of MAWP. 

That is why you need to blank or remove PSV during the hydro test

Saygılarımla, / Best Regards,

Eyup Tan

Mobile: +90 535 334 4912

On Tue, Dec 24, 2019 at 11:14 AM ViNo Varughese <vinopvarghese@gmail.com> wrote:

Dear Manoj,

Please check through API RP 520 and you should find the set pressure requirement for PRVs. Typically it is set based on the MAWP or  design pressure. However you also need to consider the static head between the protected equipment and the relied valve while deriving the set pressure.

Hope this helps.

Thanks and Regards

Vino

On Tue, Dec 24, 2019, 08:23 Manoj John <manojacgnr@gmail.com> wrote:

Dear Experts,

As per B31.3 what is the PSV set pressure during hydrotest.

Please give expert opinion as there is no clause found in B31.3 for hydrotest PSV set pressure, PSV set pressure for pneumatic only prescribed.

Thanks in advance,

Manoj

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Re: [MW:30323] PSV set pressure during hydrotest of piping

Dear Mr. Manoj,

   During the Hydro test the set pressure of PSV that you had fixed in the manifold will be as 1.1 times of the line test pressure i.e 10% higher than the line test pressure. 

Regards,

P.Balajirajan.

On Tue, Dec 24, 2019 at 11:59 AM Eyup Tan <eyuptan@gmail.com> wrote:

You should blank PSV during the hydro test or remove PSV from line/equipment. 

Because PSV set pressure is adjusted to %10 above of MAWP. But hydrostatic Test Pressure is 1,5 times of MAWP.

You can't make hydrostatic test 1,5 times of MAWP because PSV will open when pressure comes to 1.1 times of MAWP. 

That is why you need to blank or remove PSV during the hydro test

Saygılarımla, / Best Regards,

Eyup Tan

Mobile: +90 535 334 4912

On Tue, Dec 24, 2019 at 11:14 AM ViNo Varughese <vinopvarghese@gmail.com> wrote:

Dear Manoj,

Please check through API RP 520 and you should find the set pressure requirement for PRVs. Typically it is set based on the MAWP or  design pressure. However you also need to consider the static head between the protected equipment and the relied valve while deriving the set pressure.

Hope this helps.

Thanks and Regards

Vino

On Tue, Dec 24, 2019, 08:23 Manoj John <manojacgnr@gmail.com> wrote:

Dear Experts,

As per B31.3 what is the PSV set pressure during hydrotest.

Please give expert opinion as there is no clause found in B31.3 for hydrotest PSV set pressure, PSV set pressure for pneumatic only prescribed.

Thanks in advance,

Manoj

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Re: [MW:30322] Filler material Selection

Received clarification from the client about using E316L to weld Carbon steel.

Their welders are qualified to weld steel (P1 to P15) with filler material (F1 to F4).

They want these welder to be qualified for F No. 5 but do not have austenitic steel base metal in stock. Only Carbon steel is available in stock.

Therefore, they have requested a PQR to weld Carbon steel base metal P No 1 with E316L and ER 316L (F5 and F6).

In case the coupon meets ASME Section IX Nondestructive and destructive testing requirements, they will prepare a WPS which shall be used only to qualify welders for F number.

On another note, I hope to receive guidance on selection of filler materials in general. 

What are the parameters to be considered to select filler materials for any base metal and whether it is addressed by general standards in the industry.

Thanks and best regards,

Navanith

On Tue, 24 Dec 2019 at 06:08, HENNING John <John.Henning@hamon.com> wrote:

Possible, yes, but not for Section I if water wetted service.

 

Practical, no, absolutely not.  I have a really difficult time trying to come with any reason to do this and a host of possible issues if done.

 

Enjoy - John

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Navanith
Sent: Sunday, December 22, 2019 6:26 AM
To: Materials & Welding
Subject: [MW:30305] Filler material Selection

 

Dear Experts,

 

Require guidance on filler material selection as per ASME BPVC.

For example:I received this query from a client

Base metal is ASTM A106 Gr.B and they want to weld using E316L electrodes.

Is it possible to use E316L electrodes to weld directly?

 

Regards,

Navanith

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Re: [MW:30321] PSV set pressure during hydrotest of piping

You should blank PSV during the hydro test or remove PSV from line/equipment. 

Because PSV set pressure is adjusted to %10 above of MAWP. But hydrostatic Test Pressure is 1,5 times of MAWP.

You can't make hydrostatic test 1,5 times of MAWP because PSV will open when pressure comes to 1.1 times of MAWP. 

That is why you need to blank or remove PSV during the hydro test

Saygılarımla, / Best Regards,

Eyup Tan

Mobile: +90 535 334 4912

On Tue, Dec 24, 2019 at 11:14 AM ViNo Varughese <vinopvarghese@gmail.com> wrote:

Dear Manoj,

Please check through API RP 520 and you should find the set pressure requirement for PRVs. Typically it is set based on the MAWP or  design pressure. However you also need to consider the static head between the protected equipment and the relied valve while deriving the set pressure.

Hope this helps.

Thanks and Regards

Vino

On Tue, Dec 24, 2019, 08:23 Manoj John <manojacgnr@gmail.com> wrote:

Dear Experts,

As per B31.3 what is the PSV set pressure during hydrotest.

Please give expert opinion as there is no clause found in B31.3 for hydrotest PSV set pressure, PSV set pressure for pneumatic only prescribed.

Thanks in advance,

Manoj

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Re: [MW:30320] PSV Testing

API 526

2.3 Valve Selection

For valves described in this standard, inlet and outlet
flange sizes and pressure-temperature ratings shall conform
to the data in Tables 2 through 15 for spring-loaded valves
and Tables 16 through 29 for pilot-operated valves. Inlet and
outlet pressure limits are governed by the flange
pressure/temperature limits or by the manufacturer's design
limits, whichever is lower.

Saygılarımla, / Best Regards,

Eyup Tan

Mobile: +90 535 334 4912

On Tue, Dec 24, 2019 at 8:23 AM chiluka venkatramulu <ramuluchiluka@gmail.com> wrote:

Can you give me any code reference pl.

Regards,

Venkatramulu CH

On Tue, Dec 24, 2019 at 9:07 AM Eyup Tan <eyuptan@gmail.com> wrote:

#600 rating because #600 flange for inlet and #300 is for outlet (exhaust) flange

Regards 

Eyup Tan

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chiluka venkatramulu <ramuluchiluka@gmail.com> şunları yazdı (24 Ara 2019 06:08):



Dear All,

If PSV having flange rating 300 X 600, which rating is considered for testing Body & Bonnet, as per B16.34.

With Best Regards,

Venkatramulu CH

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Re: [MW:30319] PSV set pressure during hydrotest of piping

Dear Manoj,

Please check through API RP 520 and you should find the set pressure requirement for PRVs. Typically it is set based on the MAWP or  design pressure. However you also need to consider the static head between the protected equipment and the relied valve while deriving the set pressure.

Hope this helps.

Thanks and Regards

Vino

On Tue, Dec 24, 2019, 08:23 Manoj John <manojacgnr@gmail.com> wrote:

Dear Experts,

As per B31.3 what is the PSV set pressure during hydrotest.

Please give expert opinion as there is no clause found in B31.3 for hydrotest PSV set pressure, PSV set pressure for pneumatic only prescribed.

Thanks in advance,

Manoj

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Re: [MW:30318] PSV set pressure during hydrotest of piping

Gentlemen,

During HT of piping, all the openings are to be blanked suitably, except test gauges mounted for pressure reading. Means you remove the PSV and blank off the opening.

Thanks & Best Regards,

Vinodchandra Bhatt (M) 99250 10858

On Tue, Dec 24, 2019 at 10:53 AM Manoj John <manojacgnr@gmail.com> wrote:

Dear Experts,

As per B31.3 what is the PSV set pressure during hydrotest.

Please give expert opinion as there is no clause found in B31.3 for hydrotest PSV set pressure, PSV set pressure for pneumatic only prescribed.

Thanks in advance,

Manoj

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[MW:30315] PSV set pressure during hydrotest of piping

Dear Experts,

As per B31.3 what is the PSV set pressure during hydrotest.

Please give expert opinion as there is no clause found in B31.3 for hydrotest PSV set pressure, PSV set pressure for pneumatic only prescribed.

Thanks in advance,

Manoj

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Re: [MW:30315] PSV Testing

Can you give me any code reference pl.

Regards,

Venkatramulu CH

On Tue, Dec 24, 2019 at 9:07 AM Eyup Tan <eyuptan@gmail.com> wrote:

#600 rating because #600 flange for inlet and #300 is for outlet (exhaust) flange

Regards 

Eyup Tan

iPhone'umdan gönderildi

chiluka venkatramulu <ramuluchiluka@gmail.com> şunları yazdı (24 Ara 2019 06:08):



Dear All,

If PSV having flange rating 300 X 600, which rating is considered for testing Body & Bonnet, as per B16.34.

With Best Regards,

Venkatramulu CH

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Re: [MW:30314] PSV Testing

#600 rating because #600 flange for inlet and #300 is for outlet (exhaust) flange

Regards 

Eyup Tan

iPhone'umdan gönderildi

chiluka venkatramulu <ramuluchiluka@gmail.com> şunları yazdı (24 Ara 2019 06:08):



Dear All,

If PSV having flange rating 300 X 600, which rating is considered for testing Body & Bonnet, as per B16.34.

With Best Regards,

Venkatramulu CH

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