Dear Asif there are three cases when PWHT/HEAT TREATMENT is required first 1) When butt weld if the pipe wall thickness is more than 20mm
2.) if the thickness given in sketches 1,2,3,4,5 after adding them it's coming twice the minimum requires thickness for PWHT that is 20 so 2x20=40mm suppose Tb+Tc=41mm than its requires PWHT.
3.) for P1 material if the throat thickness is more than 16 mm.
4.) for P-No.3,4,5,or 10A materials when throat thickness is more than 13mm .
Hope its clear to you now...
Ishwar Dhiman
Sent from my iPad
> On 27-Oct-2014, at 3:56 pm, "'Prakash Hegde' via Materials & Welding" <materials-welding@googlegroups.com> wrote:
>
> Hi!
> I tried to explain in attached file Hope it may give some idea If you need still more details Please put up your exact problem with all details
> Regards
>
> Hegde Prakash
> --------------------------------------------
> On Sun, 26/10/14, 'Asif Shahzad' via Materials & Welding <materials-welding@googlegroups.com> wrote:
>
> Subject: [MW:22174] ASME B31.3 Heat Treatment Governing Thickness 331.1.3
> To: "materials welding" <materials-welding@googlegroups.com>
> Date: Sunday, 26 October, 2014, 11:59 AM
>
> Dear Expert,
> Can any body explain the portion of
> Governing Thickness 331.1.3 in the section of heat treatment
> in ASME B 31.3.I cant not understand it i need
> explanation,
> I shall be very thankful for your
> kind consideration. Regards,
>
> .Asif
>
>
>
>
>
> --
>
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> <Interpretaion Document.docx>
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2.) if the thickness given in sketches 1,2,3,4,5 after adding them it's coming twice the minimum requires thickness for PWHT that is 20 so 2x20=40mm suppose Tb+Tc=41mm than its requires PWHT.
3.) for P1 material if the throat thickness is more than 16 mm.
4.) for P-No.3,4,5,or 10A materials when throat thickness is more than 13mm .
Hope its clear to you now...
Ishwar Dhiman
Sent from my iPad
> On 27-Oct-2014, at 3:56 pm, "'Prakash Hegde' via Materials & Welding" <materials-welding@googlegroups.com> wrote:
>
> Hi!
> I tried to explain in attached file Hope it may give some idea If you need still more details Please put up your exact problem with all details
> Regards
>
> Hegde Prakash
> --------------------------------------------
> On Sun, 26/10/14, 'Asif Shahzad' via Materials & Welding <materials-welding@googlegroups.com> wrote:
>
> Subject: [MW:22174] ASME B31.3 Heat Treatment Governing Thickness 331.1.3
> To: "materials welding" <materials-welding@googlegroups.com>
> Date: Sunday, 26 October, 2014, 11:59 AM
>
> Dear Expert,
> Can any body explain the portion of
> Governing Thickness 331.1.3 in the section of heat treatment
> in ASME B 31.3.I cant not understand it i need
> explanation,
> I shall be very thankful for your
> kind consideration. Regards,
>
> .Asif
>
>
>
>
>
> --
>
> 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/
>
> http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
>
>
>
> 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.
>
> ---
>
> You received this message because you are subscribed to the
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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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> <Interpretaion Document.docx>
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