Hi all,

I am working on a FRP system using ISO 14692 code.
I have a few questions regarding flange leakage analysis on FRP flanges and I am hoping someone can help me.

1) In CAESAR II , on FRP flanges I select the Flange Check option and since the sizing matches B16.5 , I select an equivalent size to get the correct dimensions. Then in the Pressure-Temperature table I re-write the pressures as per the design pressure of the FRP flanges provided by the vendor. Do you think it's a correct approach?

2) When I look at the flange check results, I see that for HYD load case, CAESAR applies 1.33 factor to the allowable pressure (which I think it's correct) but it doesn't do the same for other load cases. I expected it to multiply 1.24 to the design pressure for OPE and 1.33 for OCC load cases! Could anybody advise if I should re-calculate the allowable pressures myself or not?

Thanks in advance

1) I wonder if FRP flanges have the same failure criteria as steel flanges.
2) Check the load case options for the "occasional load" allowable multipliers. You can reset them there if they are not correct.