figuring Pred in a cylidrical vessle-eplosion proofing a cyclone
figuring Pred in a cylidrical vessle-eplosion proofing a cyclone
(OP)
I have a vessle that I have to give the "P reduced" for but do not have any data on it since it's a new design. Is there a way to figure this out without using the arbirary numbers described in the FM data sheet 7-76? We are certain the cyclone can handle more than 4.4 psig but have not idea how to get this data. Any help or a point in the right direction would be great! Thanks in advace!
Dan
Dan





RE: figuring Pred in a cylidrical vessle-eplosion proofing a cyclone
I use ASME vessel equations and various others originating from API and other sources. I determine the weakest element using the design stress to base design pressure.
Pred equations are in NFPA 68 2007, Ch 6.3. You decide if you will allow/disallow deformation in the event of a deflagration this determines if you factor against the ratio of yield or ultimate to the design pressure.
RE: figuring Pred in a cylidrical vessle-eplosion proofing a cyclone