I have a related question.

We are involved in a piping project where some portion of a high pressure (1500 Psig) high temperature (1000ºF) steam piping in ASTM A335 P22 material will have to be removed and a heavy weight (20,000 Lbs) new steam control valve, along with new A335 P22 material piping and associated new pipe supports (hangers)and restraints will be welded to the existing remaining piping. The piping has a nominal diameter of 12", extra heavy wall thickness (1.3" minimum) and is in operation for last 15 years, at reasonably steady load.

As the piping is in operation for so many years in the creep zone, it must have self sprung and therefore a considerable portion of expansion stress, equipment terminal reactions and movements have reappeared in the cold condition. The pipe was erected with no cold pull up gap.

Can Caesar-II be used to simulate the configuration (that is movements), residual stress and moments and forces in the cold shutdown condition at all node points? Please advise.

Regards (2011-02-21)