ANK72
Mechanical
- Feb 21, 2004
- 21
Hello all,
Can someone please advise what calculation procedure to use for evaluating stresses at nozzle attachments larger than half the vessel diameter?
There is an existing heat exchanger that was designed to ASME VIII Div 1 in the fifties. It will experience uplift in a seismic event thus causing dynamic loads on the nozzles.
The shell is made of DN500, XS SMLS pipe (508mm OD, 12.7mm thk) and the product outlet nozzle is DN250, XS SMLS pipe (273mm OD, 12.7mm thk).
My understanding is that the given D/d ratio is outside the scope of PD5500 and WRC107. Can you please recommend an alternative procedure?
The nozzle loads (both static and dynamic) have been established from an AutoPIPE stress analysis.
Many thanks
Can someone please advise what calculation procedure to use for evaluating stresses at nozzle attachments larger than half the vessel diameter?
There is an existing heat exchanger that was designed to ASME VIII Div 1 in the fifties. It will experience uplift in a seismic event thus causing dynamic loads on the nozzles.
The shell is made of DN500, XS SMLS pipe (508mm OD, 12.7mm thk) and the product outlet nozzle is DN250, XS SMLS pipe (273mm OD, 12.7mm thk).
My understanding is that the given D/d ratio is outside the scope of PD5500 and WRC107. Can you please recommend an alternative procedure?
The nozzle loads (both static and dynamic) have been established from an AutoPIPE stress analysis.
Many thanks
