P No.5A to P No.1 with ERNiCr-3 Buttering - AVOID PWHT

[PARAI Reaction Channel]

Dear Sirs ,

 

We have a project with both shell and Reinforcement Pad materials SA516-70, 10 mm Thk ( P No.1 ) and only the Nozzle is SA335-P22, 4” Sch 120 , 

11.1 mm ( P No.5A ) Thk.

To avoid PWHT for this case as per ASME Sec VIII Div I UCS 56-4 Table,

can we do buttering with ERNiCr-3 on P No.5A bevel prep. and butt weld 

with same filler for this dissimilar joint to avoid PWHT after making new 

PQR with buttering ?

ASME AI says, PWHT required after making buttering on P No. 5A bevel 

Prep.

Please confirm.

Regards,

Saravanan,

S.Korea

[Kannayeram Gnanapandithan]

preheat isnot enough to avoid because thickness is below 16mm??

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015, ISO 3834, EN 15085, 

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

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