Permanent blind flanges may not require PWHT, any welds associated with them typically do, if they affect
the structural integrity. But if the handle is a temporary weldment, and removed later or if the fillet is small,
then PWHT is not needed.
C Sridhar.
On Thu, 4 Sept 2025 at 18:36, Muhammed Ibrahim PK <ibratech@gmail.com> wrote:
--Dear All,Is it required to place permanent blind flanges in the furnace when the vessel requires PWHT ?.If there is handle welded on blind flange, PWHT required ?Thanks & Regards
Muhammed Ibrahim PK
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
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