The material 516 Gr 70 is a P1, you are mentioning that it is a repair, I suggest you check Table UCS-56-1 (b) (ASME Section VIII Div. 1), where the PWHT requirements for P1 materials appear, in ( b) it makes some exceptions to the PWHT based on the thickness of the material, if you exceed those thicknesses you will have to do the PWHT, but because it is a repair you also have to check the NB-23 and API 650 since from what I see in the drawing is a kit for the O&G Industry.
The Skirt I do not think it should carry PWHT since it is not a pressurized part.
Cheers!.
The Skirt I do not think it should carry PWHT since it is not a pressurized part.
Cheers!.
El mar., 5 may. 2020 a las 1:31, 'TC Kwa' via Materials & Welding (<materials-welding@googlegroups.com>) escribió:
--Hi,If it is for Sour service, PWHT shall be done, since material is A-516 Gr 70.Thank you.Regards,
Ir. TC Kwa
+6012-3998739
Email: tckwa@yahoo.co.uk
LinkedIn Profile : https://my.linkedin.com/in/tckwa
On Tuesday, 5 May 2020, 12:36:46 GMT+8, enginakgun55 <enginakgun55@gmail.com> wrote:Hello,--We work on material selection about column materials (shell, head, skirt). If we use A-516 Gr.70 material in this project, does it require heat treatment for repair on the column during maintenance?Production Properties : Sour Service , Distilation ColumnBest Regards
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