Dear all Experts Kindly requesting your quick help.

Load cases as per ASME B31.3 Are
Hyd, Sus, Ope, Exp and occ.

Simple listing is
L1 W+T1+P1 (OPE)
L2 W+T1+P1+U1 (OPE)
L3 W+T1+P1-U1 (OPE)
L4 W+T1+P1+U2 (OPE)
L5 W+T1+P1-U2 (OPE)
L6 W+T1+P1+U3 (OPE)
L7 W+T1+P1-U3 (OPE)
L8 W+P1 (SUS)
L9 L1-L8 (EXP)
L10 L2-L1 (OCC)
L11 L3-L1 (OCC)
L12 L4-L1 (OCC)
L13 L5-L1 (OCC)
L14 L6-L1 (OCC)
L15 L7-L1 (OCC)
L16 L8+L10 (OCC)
L17 L8+L11 (OCC)
L18 L8+L12 (OCC)
L19 L8+L13 (OCC)
L20 L8+L14 (OCC)
L21 L8+L15 (OCC)


I am asked to do as per ASME B31.8 VIII
only Ope and SUS
L1 W+T1+P1 (OPE)
L2 W+T1+P1+U1 (OPE)
L3 W+T1+P1-U1 (OPE)
L4 W+T1+P1+U2 (OPE)
L5 W+T1+P1-U2 (OPE)
L6 W+T1+P1+U3 (OPE)
L7 W+T1+P1-U3 (OPE)
L8 W+P1 (SUS)

I am told that as the B31.8 consider allowable directly in relation with specified minimum Yield stress (Hoop,Longi and combined), hence it do not required to model load cases EXp and Occ. and I agree in principle but can anyone please confirm with explanation exact code relation and i am sure to go with it.