How to handle with bolts with a tensile strength < 689 MPa?
Say I have austenitic bolts like SA-193(M) Gr.B8M2 and choose material curve 2, the allowable cycles are >> 1e10,
but with high strength bolting like SA-193 B7 (curve 6) the allowable cycles are approx. 600000 with the same stress...
Mike,
thanks a lot for your fast reply.
To clarify the problem see attachments.
The closure diameter on the nozzle T1 is surely greater than the influence length of the nozzle.
The closure diameter on the manway is within the influence length.
The manway sees partly atmospheric pressure and...
I have a jacketed vessel with 7 bar overpressure in the jacket and vacuum conditions in the vessel.
The nozzle in the cylindrical part is designed according to ASME VIII-1 Figures 9-5 d1) and 9-6 a).
The nozzle calculations should be performed according to UG37 etc.
The vessel wall is partly...
