Re: Re: [MW:9620] Hoe to select Flange's rating and class

Dear Saamy,

 

For A106 Gr B pipe, flange material would be A105 (please check your piping material specification), refer to page 2 of the file "Pressure-Temp Ratings OF Flanges-graph" the relevant material group is 1.1(please check the temperature limitation specified as note 1 for A105), then refer to appropriate graph on page 4, in this stage you need to have the design pressure and design temperature of the line, I supposed they are 80 bar and 250 deg C respectively. The intersection position of the 80 bar and 250 deg C is located above the curve 400 Lbs flange and below the curve of 600 Lbs flange.

It means that the 400 lbs flange is weak and 600 lbs flange is enough. 

 

Hope the above will be useful for you.

 

Regards,

Karandish

 

---

From: muthu barathi <muthu_barathi@rediffmail.com>
To: materials-welding@googlegroups.com
Sent: Mon, 31 January, 2011 4:21:54 PM
Subject: Re: Re: [MW:9602] Hoe to select Flange's rating and class

Hi,

Can you please give notes that to how to read from where . Say if I
want to select on 12" A 106 Gr B pipe for sour service . how to select
the rating of flange from this chart . can you please explain?



On Mon, 31 Jan 2011 16:59:46 +0530 wrote
>Dear Saamy,


1- Flange material shall be selected based on service conditions (fluid
properties such as corrosiveness, temperature, hydrogen contents,...).
2- Based on design pressure, design temperature and material of
construction the flange rating shall be selected according to
pressure/temperature rating tables of ASME b16.5.
Based on my long experience on this matter I found that working with
pressure/temperature rating tables of ASME b16.5 is not so easy and
accurate. So I converted these tables to the graphs which is in
attached as a pdf file for your convenience.

Hope it will be useful for you.

Regards,
Karandish

>


From: muthu barathi
>To: materials-welding@googlegroups.com
>Sent: Mon, 31 January, 2011 1:32:49 PM
>Subject: Re: [MW:9592] Hoe to select Flange's rating and class
>
>Hi,
>You have to refer your LDT (Line designation table) and P & ID
(Process
>instrument diagram).
>
>
>
>On Mon, 31 Jan 2011 10:49:05 +0530 wrote
>>Dear All!
>
>Could you explain me how to select flange ratings and class against
>
>service, temp, and pressure?
>
>
>
>Thanks!
>
>
>
>Saamy
>
>
>
>--
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>
>
>Dear Sir,
>
>
>
>
>
>Thanking You,
>
>Honesty is the best Policy
>
>With Warm Regards,
>
>Muthu Barathi P
>Mobile No:00962788269821 (Jordan)
>00962775401951
>




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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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>
To post to this group, send email to materials-welding@googlegroups.com
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For more options, visit this group's bolg at http://materials-
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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.
>


Dear Sir,





Thanking You,

Honesty is the best Policy

With Warm Regards,

Muthu Barathi P
Mobile No:00962788269821 (Jordan)
00962775401951

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To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
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.