I am working on an FPSO topsides job. The load case includes weight, pressure, temperature, combinations of accelerations, structural deflection due to sagging and hogging, module structure deflection due to accelerations, and extreme wind pressure.

Definition of the specific load cases are:

L31 = WIN1
L50 = max(L34 through L49)

L34 through L49 = W + T2 + P1 + H +/- U1 +/- U2 +/- U3 + D1 (+ D2) + D3 (+ D4) + D5 (+ D6)
(They are 16 combinations of accelerations and structural displacements)

(Where T2 = Maximum Design Temperature, P1 = Design Pressure)

L51 = absolute combination of L31 and L50

Of course, I have seleted T2 as the temperature required for flange Peq calculation.
Please let me know if you need any further information.