According to Asme VIII div.2 Tab. 5.6 (ed.2010) the stresses in the shell near nozzle or other opening due to internal pressure are PL,Q anf F.
On the same table on the nozzle within the limits of reinforcement given by paragraph 4.5 the stresses due to internal pressure are general membrane Pm...
Gent,
general question about test pressure according to ASME VIII div 1,
Hydrostatic pressure=1.3xPdxStest/Sdes (UG-99(b))
Static pressure can be neglect (very low)
Assume MAWP=Pd
Min. MAWP calculated < Hydrostatic pressure
Min. MAP calculated < Hydrostatic pressure also
In this case do I need...
I have question for you gents:
I’m checking a stress calculation from our vendor (vertical reactor) performed with FEM.
The loads are: weight, pressure and thermal,no cycle loads.
At a certain point he calculate PL+PB+Q+F=562MPa ( connection between the head and nozzle) larger then allowable...
I have a question regarding bolts preload:
I calculated a flange according to appendix 2 of Asme VIII div.1, and now i have to define the max preload bolts to assemble the joint, i saw several calculations where is showed a pre stress of the bolts of 50% of the allowable stress.(this value is...
