Hello all,
I need to evaluate shell stresses at a nozzle attachment on a pressure vessel. PD5500 requires that the distance between the end of the cylinder and the edge of the attachment should be not less than r/2. Where 'r' is the radius of the shell.
In my case the nozzle is less than r/2...
Hello all,
We are trying to assess fitness for service of a A106-B, 30 inch refractory lined pipe which is opearting at its max design conditions - 23barg (MAWP) and 150deg C temperature (designed to ASME B31.3). Thermographic examination has shown several hot spots of 200 to 270deg C.
Is there...
Hello all,
We are trying to assess fitness for service of a A106-B, 30 inch pipe that was originally designed to operate at 23barg MAWP and 150deg C temperature (to ASME B31.3). The piping is currently running at the max design pressure and temperature. Thermographic examination has shown...
Hello all,
Appendix P.3 (2003 addendum) now allows to evaluate stresses at nozzle-to-shell intersections due to external nozzle loads.
Tank parameters (d/tn), (t/tn) and (u) determine equations (or curves) for calculating the stress factors.
The three sample problems given in the code deal...
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 shell & tube heat exchanger designed to ASME VIII Div 1. It will experience uplift in a seismic event thus causing...
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...
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...
Hello all
I need to back check the design of an existing storage tank fitted with a pressure relief vent and a vacuum breaker (set at 5kPa and 0.5kPa respectively). This is outside the scope of ASME VIII Div.1 (External or internal pressure not exceeding 15psi).
It is a vertical cylindrical...
Hello all,
I have two questions:
1) There are two existing bulk fuel storage tanks that require nozzle load checking. The tanks were originally designed to API 650 but it appears that no calcs were ever done for the max allowable nozzle loads imposed by the piping. The tanks experience a...
Hello all,
Can anyone please recommend a decent programme that can handle a variety of fluids from crude oil to Jet A1. Typical models are complex systems with pumps, valves surge tanks, etc. I have shortlisted AFT Impulse and Hytran. I'm in two minds about BOS/Fluids. Ability to import from...
