Damaged Fins of Heat exchanger-Acceptance criteria
Damaged Fins of Heat exchanger-Acceptance criteria
(OP)
The Fins of Tube bundle of a Heat exchanger got badly damaged. Bundle is U1 stamped and API 661 requirements to conform.(New construction)
what would be the acceptance limit/criteria in damage of Fins ?





RE: Damaged Fins of Heat exchanger-Acceptance criteria
First off, you have double posted in the ASME Code forum. So, to conform with site rules here is the cross post link.
thread292-251346: Heat Exchanger Fin damage-Level of acceptance as per Code
Now in response to your question, this is a contractual matter between the manufacturer and the client, and not a code of construction matter. If it was me, and I had a detailed engineering specification when I sent out my request for proposals, it would probably have language that mentions no physical or mechanical damage during handling or shipping.
This means - no fin damage period.
RE: Damaged Fins of Heat exchanger-Acceptance criteria
genb
RE: Damaged Fins of Heat exchanger-Acceptance criteria
Regards,
Mike
RE: Damaged Fins of Heat exchanger-Acceptance criteria
At the very least id do a visual inspection and hydro of the tubes again, and possibly some NDE. as for the fins, you just ahve to make the call on if you think those fins are damaged enough to adversely affect the heat transfer.
RE: Damaged Fins of Heat exchanger-Acceptance criteria
Very interesting! Do your customers actually know that they will get a product is deliberatly "deformed"? I know the first thing that comes to mind for the reason is "enhanced HT". It must be me, but I get this uneasy feeling about seeing deformed tube fins.
RE: Damaged Fins of Heat exchanger-Acceptance criteria
you mass produce.
RE: Damaged Fins of Heat exchanger-Acceptance criteria
RE: Damaged Fins of Heat exchanger-Acceptance criteria
You need to get him to justify with something like HTRI that the unit will still make its duty with a safety margin.
rmw
RE: Damaged Fins of Heat exchanger-Acceptance criteria