if welding is done to form dish end ( like Pettal construction) then ur pqr should under all heat treatment.
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On Wed, Oct 9, 2019 at 11:48 AM sandeep kumar <sandeepdhiman63@gmail.com> wrote:
Refer ASME Section IX, QW 407.1 as your dishend are single piece and will be normalized before welding. So you have to follow PWHT for qualification which is applicable after welding for your vessel.--
On Monday, August 12, 2019 at 1:14:19 PM UTC+3, chiluka venkatramulu wrote:Dear All,Pl clarify the below.One of vessel under fabrication will under go the fallowing heat treatments. (Material-516 G 70, shell-63 mm, dish end -75mm, dish end in one piece only)
- Dishends Normalising-2 cycle.
- PWHT for whole vessel.
Now shall I need to do all three heat treatment cycles to qualify WPS?OROnly two normalising cycles are enough?Regards,Venkatramulu
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