Fabrication according to previous ASME BPVC edition
Fabrication according to previous ASME BPVC edition
(OP)
Hi everyone, and happy new year!!!!
Our Client needs to make some heat exchangers that are copy of the existing ones, made back in 2004-2005 by others.
They provided to us the data books of the exchangers fabrication. That time, the applicable ASME BPVC edition for the project was 2001, with addenda 2002.
They told us that they will keep the previous design, which we should follow, and thus the old drawings.
Please note that the fabrication Code is ASME BPVC Section VIII, Div.2, but the exchangers are NOT ASME Certified (they are PED).
Questions:
- Am I allowed to fabricate according to an older ASME edition (even though the exchangers will NOT bear the certification mark)?
- Since the design is the old one, what should I do for the design verification, which is obligatory in Div.2?
- What else should I know, in order to be "legal"?
Thank you, guys...
Our Client needs to make some heat exchangers that are copy of the existing ones, made back in 2004-2005 by others.
They provided to us the data books of the exchangers fabrication. That time, the applicable ASME BPVC edition for the project was 2001, with addenda 2002.
They told us that they will keep the previous design, which we should follow, and thus the old drawings.
Please note that the fabrication Code is ASME BPVC Section VIII, Div.2, but the exchangers are NOT ASME Certified (they are PED).
Questions:
- Am I allowed to fabricate according to an older ASME edition (even though the exchangers will NOT bear the certification mark)?
- Since the design is the old one, what should I do for the design verification, which is obligatory in Div.2?
- What else should I know, in order to be "legal"?
Thank you, guys...
Only best result in absolutely necessary time





RE: Fabrication according to previous ASME BPVC edition
Where are you situaated?
RE: Fabrication according to previous ASME BPVC edition
Thank you so much for your prompt reply; I can now admit that I had exactly the same impression and opinion, but now I'm more confident...
We are in Greece, and the client is a local refinery...
I believe that I will now have to get in contact with the client, to see our next steps...
Thanks a lot!!!
Only best result in absolutely necessary time
RE: Fabrication according to previous ASME BPVC edition
Best thing is to design the exchanger using latest edition with same dimensions as the old one.
Remember that the factor of safety in Section VIII Div 2 was reduced from 3.0 to 2.4 in 2007 and you should not have any problem in satisfying the current Code edition with old dimensions and thickness.
RE: Fabrication according to previous ASME BPVC edition
Regards
r6155
RE: Fabrication according to previous ASME BPVC edition
teokal, might be worth your while to find out if they want or need true dimensional duplicates, i.e. interchangeable parts old to new, OR do they just want to hold the major dimensions such that the new exchangers mount to the foundation and pipe up like the old ones did.
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand