CAN SA-36 be used for a U-Stamped Vessel (ASME Section VIII Div 1)
CAN SA-36 be used for a U-Stamped Vessel (ASME Section VIII Div 1)
(OP)
We have got a reboiler with Molten Salt as a Heat Tranfer Media. The Reboiler will be used to heat the condensate containing coil and heating is done by the flu gases in another coil. The molten salt will be filled in the shell section. The reboiler will be fabricated as per ASME Section VIII and will be U-Stamped also. Now the vendor is insisting to use SA-36 for the Shell and is stating that since there will be no pressure in the Shell Section of the Reboiler since it will be used to store the heating media, therefore SA-36 can be used but our datasheet is saying that SA-516 Gr. 70 Normalized (Nace compliant material) to be used.The temperature of the reboiler will be 215 degree C.
The service is sour and the client has stated that all the materials must be NACE compliant. My question here is that can we use SA-36 for such kind of service and conditions or not (need code reference)?
The service is sour and the client has stated that all the materials must be NACE compliant. My question here is that can we use SA-36 for such kind of service and conditions or not (need code reference)?





RE: CAN SA-36 be used for a U-Stamped Vessel (ASME Section VIII Div 1)
Not permitted for lethal service, unfired steam boilers, or welded shells over 5/8" thick.
Don't know if it can be had NACE compliant but tend to doubt it.
Regards,
Mike
RE: CAN SA-36 be used for a U-Stamped Vessel (ASME Section VIII Div 1)
RE: CAN SA-36 be used for a U-Stamped Vessel (ASME Section VIII Div 1)
Obaid
RE: CAN SA-36 be used for a U-Stamped Vessel (ASME Section VIII Div 1)
RE: CAN SA-36 be used for a U-Stamped Vessel (ASME Section VIII Div 1)
RE: CAN SA-36 be used for a U-Stamped Vessel (ASME Section VIII Div 1)
RE: CAN SA-36 be used for a U-Stamped Vessel (ASME Section VIII Div 1)
The service is sour and the client has stated that all the materials must be NACE compliant
Please tell me that my company is not your client! Seriously, since when does a fabricator dictate to a client (and I'll presume that you are with an engineering firm acting on behalf of the user, your client) what material a given piece of equipment is fabricated of?
Did the fabricator simply choose to not read the request for quotation which included this requirement? Or did they read it and are now willfully ignoring it? Either way, Duwe's response above is spot-on.
Or... Did you fail to include this little detail about SA-516-70N in your RFQ and are now looking to put the blame on the fabricator?
Something went seriously wrong in the procurement process here. It is just not entirely clear where. For now this is a commercial issue. Once in operation, people are put at risk if inadequate materials are used. I'll urge you to do the right thing.