pressure rating and surge pressure
pressure rating and surge pressure
(OP)
My engineering department are raising concerns that a Copper Nickel pipe system utilizing 16bar rated pipe, and ANSI 150# flanges will not be able to withstand a 25 bar surge pressure. Are they right to be worried or are they being overly cautious ?





RE: pressure rating and surge pressure
Have you checked this with ASME B16.5 (Pipe Flanges & Flanged Fittings) pressure-temperature tables?
I can do that for you but don't know which material group you are in.
RE: pressure rating and surge pressure
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: pressure rating and surge pressure
RE: pressure rating and surge pressure
I am interested to know where the 25bar came from. Is this from a comprehensive waterhammer analysis?
If this is an estimate using the Joukowsky formula it could be an underestimate as this formula does not cover all systems and events.
If measured in the field and SCADA instruments are used it could be woefully understated. SCADA instruments are de-tuned for stability and just do not pick up the maximum pressure surge.
“The beautiful thing about learning is that no one can take it away from you.”
---B.B. King
http://waterhammer.hopout.com.au/
RE: pressure rating and surge pressure
I have not read the Russian-CIS codes yet, but I can check those for you, if you think I should.
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek