Heat treatment for lethal service for stainless steel drum
Heat treatment for lethal service for stainless steel drum
(OP)
Dear all,
I have an acid gas knock drum 5' dia x 12' T/T vertical, which our process classifies as lethal service. It is 316/316L SS construction.
Per code lethal service requires PWHT. My question is, shall I ask for solution anneal after fabrication ?
(I have vendors either will provide solution anneal on base metal only, or no bid because of the concern of deformation or does not have enough water storage for quenching the entire vessel.)
I have an acid gas knock drum 5' dia x 12' T/T vertical, which our process classifies as lethal service. It is 316/316L SS construction.
Per code lethal service requires PWHT. My question is, shall I ask for solution anneal after fabrication ?
(I have vendors either will provide solution anneal on base metal only, or no bid because of the concern of deformation or does not have enough water storage for quenching the entire vessel.)





RE: Heat treatment for lethal service for stainless steel drum
(a) When vessels are to contain lethal substances,
either liquid or gaseous, all butt welded joints shall be
fully radiographed, except under the provisions of (2)
and (3) below, and UW-11(a)(4). ERW pipe or tube is
not permitted to be used as a shell or nozzle in lethal service
applications. When fabricated of carbon or low alloy
steel, such vessels shall be postweld heat treated.
RE: Heat treatment for lethal service for stainless steel drum
Regards
StoneCold
RE: Heat treatment for lethal service for stainless steel drum
Stonecold, our material selection was originated from chemical engineering group. I believe they must have looked into it. I will double check.
RE: Heat treatment for lethal service for stainless steel drum
RE: Heat treatment for lethal service for stainless steel drum
50 psig/274F design