Dear All,

Good Day. This is my first post.
I am working on a flexibility analysis of a circular steam ring (distributor) in a reactor. During the analysis I found that some supports are in-active, so a Hot-sustain case is required to pass, by removing those +Y (in-active) manually and run SUSTAINED case alone. Sustained allowable stress for this work is 11MPa. During this manual hot-sus I am getting induced stresses as 16MPa (>11MPa). For the same project, I added ALT-SUS for my four operating cases individually (referred from CAESAR User Guide). In this ALT-SUS case, all induced stresses are below 11MPa (requirement achieved). But my costumer asking me to show <11MPa in manual hot-sus, instead of ALT-SUS.

Hope you understood my situation. So, can anyone tell me how can I compare the manual hot-sustain and ALT-SUS (Auto hot-sus check in CAESAR)?

Also I think that, ALT-SUS deducing its values (stresses) for individual operating case and manual hot-sus is some what different to that.

Hope I may get some answer on this ASAP.

Regards,
Gautham Ajay.