HYDROTEST PRESSURE
HYDROTEST PRESSURE
(OP)
Friends,
I have an 8"-Sch80 - A106.B / BFW / 900# line .
The design Pressure for this line = 114 Kg/Cm2 G
The hydrotest pressure (as per spec.) = 171 Kg/Cm2 G
But,from ASME B16.5 flange rating table, maximum pressure for class 900 is 147.75 @ amb temp(60deg c).
So,is this hydrotest pressure @ 171 Kg/Cm2 G feasible ?
opinions awaited.....
thanks in advance
I have an 8"-Sch80 - A106.B / BFW / 900# line .
The design Pressure for this line = 114 Kg/Cm2 G
The hydrotest pressure (as per spec.) = 171 Kg/Cm2 G
But,from ASME B16.5 flange rating table, maximum pressure for class 900 is 147.75 @ amb temp(60deg c).
So,is this hydrotest pressure @ 171 Kg/Cm2 G feasible ?
opinions awaited.....
thanks in advance





RE: HYDROTEST PRESSURE
RE: HYDROTEST PRESSURE
http://www.eng-tips.com/viewthread.cfm?qid=369092
http://www.eng-tips.com/viewthread.cfm?qid=370381
B16.5, by means of para 2.6, allows a hydrostatic test pressure equal to 1.5 times the flange rating @ ambient, rounded off to the next higher 1 bar.
Assuming a flange acc. B16.5 group 1.1 (table 2-1.1), Cl. 900, the hydrostatic test pressure of the flange is 230 bar (235 kg/cm2)
RE: HYDROTEST PRESSURE
My doubt is very well settled....