Flange Hydrotest pressure (EN1092-1)
Flange Hydrotest pressure (EN1092-1)
(OP)
Hello,
I referred to EN 1092-1-2007 standard for hydrostatic test pressures & test duration of PN designated flanges. However I could not find any such reference in that standard.
If I recall correctly, old versions of applicable DIN standards for steel flanges used to mention minimum test presure equal to 1.5 x maximum working pressure of flange at 20°C as per P/T rating.
Can anyone help me with this?
Thanks in advance
(This thread is also copied in CEN / ECN Code issues forum)
I referred to EN 1092-1-2007 standard for hydrostatic test pressures & test duration of PN designated flanges. However I could not find any such reference in that standard.
If I recall correctly, old versions of applicable DIN standards for steel flanges used to mention minimum test presure equal to 1.5 x maximum working pressure of flange at 20°C as per P/T rating.
Can anyone help me with this?
Thanks in advance
(This thread is also copied in CEN / ECN Code issues forum)





RE: Flange Hydrotest pressure (EN1092-1)
So if DT is 800 F DP is 800 PSI, go to your flange material in b31.3 stress tables at 800F, Km=(S at room temp)/(S at 800F)
Plug into your formula, check that the hoop stress does not exceed your materials yield stress (HoopStress=PD/2T)
Done.
RE: Flange Hydrotest pressure (EN1092-1)
Would you please help me with this?
Thanks.
RE: Flange Hydrotest pressure (EN1092-1)
Directive 97/23/EG PED.
This is 1.43x PN of the piping system, not only the flanges.