Heat Exchanger design acc. to ASME Section VIII Div.1, with Tubesheet design acc. to ASME Section I
Heat Exchanger design acc. to ASME Section VIII Div.1, with Tubesheet design acc. to ASME Section I
(OP)
Hi to all!
Well I probably know the answer to this one, but I have to ask...
We are fabricating a Waste Heat Boiler (Heat Exchanger with fixed tubesheets) according to ASME VIII Div.1 Ed.2013.
It is a Stamped (U-designator) Vessel.
The calculations for the tubesheet when performed with UHX gave a tubesheet thickness of more than 100mm (4 in.), and the Client decided to use (and impose) the tubesheets calculations according to ASME Section I, Ed.2013. This gave to the tubesheet a thickness of only 30mm (1 1/4 in.).
Is this possible? Can we use another Section of the Code, like we did above, and have a U-stamped Heat Exchanger?
I looked over in VIII-div.1 and found no alternatives for the tubesheet design.
My AI is also considered, has not met such case in the past.
According to the Client, this is a globally common practice - which I have not heard about, 14 years in the business.
What is your opinion?
Well I probably know the answer to this one, but I have to ask...
We are fabricating a Waste Heat Boiler (Heat Exchanger with fixed tubesheets) according to ASME VIII Div.1 Ed.2013.
It is a Stamped (U-designator) Vessel.
The calculations for the tubesheet when performed with UHX gave a tubesheet thickness of more than 100mm (4 in.), and the Client decided to use (and impose) the tubesheets calculations according to ASME Section I, Ed.2013. This gave to the tubesheet a thickness of only 30mm (1 1/4 in.).
Is this possible? Can we use another Section of the Code, like we did above, and have a U-stamped Heat Exchanger?
I looked over in VIII-div.1 and found no alternatives for the tubesheet design.
My AI is also considered, has not met such case in the past.
According to the Client, this is a globally common practice - which I have not heard about, 14 years in the business.
What is your opinion?
Only best result in absolutely necessary time





RE: Heat Exchanger design acc. to ASME Section VIII Div.1, with Tubesheet design acc. to ASME Section I
Regards,
Mike
RE: Heat Exchanger design acc. to ASME Section VIII Div.1, with Tubesheet design acc. to ASME Section I
You know, Part UHX is not applicable if tube sheet is not perforated unfiormely. This was the case, so we had to move to Section I.
Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN