B16.5 Pressure Rating Question
B16.5 Pressure Rating Question
(OP)
For the normal -20-100 DegF Temp Range, a few questions:
MAWP is 285 psig..I know that.
Max HydroTest Pressure is 450 psig. Is this correct?
I don't remember Max hydro being that much above MAWP.
Also, do these ratings hold for plate flanges (ie flanges of specified the thickness, per 16.5 dimensions cut from plate, and double fillet welded...so they have no hub)?
Finally...FF vs RF. I recall the ASME Section 8 (back when I actually had access to it...and was forced to actually use it) treated FF flanges in separate class, analytically, because the gasket extended out to and beyond the bolts...which makes calcs much harder. Are FF flanged derated vs the RF flanges, which the 285 psig is based on.
Thanks in advance.
MAWP is 285 psig..I know that.
Max HydroTest Pressure is 450 psig. Is this correct?
I don't remember Max hydro being that much above MAWP.
Also, do these ratings hold for plate flanges (ie flanges of specified the thickness, per 16.5 dimensions cut from plate, and double fillet welded...so they have no hub)?
Finally...FF vs RF. I recall the ASME Section 8 (back when I actually had access to it...and was forced to actually use it) treated FF flanges in separate class, analytically, because the gasket extended out to and beyond the bolts...which makes calcs much harder. Are FF flanged derated vs the RF flanges, which the 285 psig is based on.
Thanks in advance.





RE: B16.5 Pressure Rating Question
RE: B16.5 Pressure Rating Question
Regards,
SNORGY.
RE: B16.5 Pressure Rating Question
RE: B16.5 Pressure Rating Question
Cheers,
John
RE: B16.5 Pressure Rating Question