Quote Originally Posted by raulelite View Post
.... Does it's necesary to do an flexibility analisys to a pipe system of 3 inch from a firetube boiler?, the steam have a pressure of 142 psi @ 354 F. The length of pipe is 560 ft. This is a new system, therefore I can't compare this with other existing system, however I think it's not necesary to do a formal flexibility analisys becouse the low pipe diameter and low pressure.

I look forward to hearing from you, I am little newly in this subject.
May not be necessary; 142 PSI @354°F are normal condition. If you have a straight pipe line you can only provide a simple compensation check, with an expansion joint or a U loop. In other cases you can check flexibility with simple formulas provided by ANSI B31.1.

Mik