Stress Relieve A Pipe

Suggest that you purchase and review the code of record.

ASME B31.1 and B31.3 contain rules about the types and thicknesses of joints that require stress relief.

What are the materials of construction and what is the thickness of the largest part being joined...?

Is this new construction or a repair being performed by a contractor who has never done this type of work before ?

Is there a qualified weld proceedure for this joint ?

What's the material of pie and the saddle pad? Also mention the welding filler wire / electrode you would be using for welding? If the material is of carbon steel, there is no need for PWHT as per ASME B31.3.

Regards,

Ashfaq Anwer

http://thepetrostreet.com

All the materials are P1 material and wire is ER70S-G.

I want to install the shoe afterwards. The spools will be cooked in a furnace.

Do you know what section is referenced?

Thanks

See ASME B31.3 section 331.1.3 "governing thickness" para (1) 'not required for P-No. 1 materials when weld throat thickness is 16 mm (5⁄8 in.) or less, regardless of base metal thickness'.

You may go for stress relieveing in the furnace and then after welding the saddle, perform the hydrostatic test.

Regards,

Ashfaq Anwer

http://thepetrostreet.com

Stres relief of components must always follow the code of construction as well as common sense.

Sometimes the original design is changed to a configuration that will avoid stress relief through use of thiner sections.