[MW:23881] Allowable Tube Wall Reduction Tube-to-Tubesheet Joints expended in 2 grooves and seal welded

Dear experts

 Please let me know the Allowable Tube Wall Reduction Tube-to-Tubesheet Joints expended in 2 grooves and seal welded 

Tube is SA179 ,20 mm OD & 2 mm thick

Tube sheet SA299 Gr B , 20.20 +_ 0.05 mm hole dia with 2 grooves inside the hole 

Please also share the applicable clause of TEMA or ASME stand.

Regards

Pushpraj Anand

  

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