Hi,
I have performed Flange Leakage calculation in CAESAR II by using Press. Equ. method for 10"/900# DSS-Flange and found the result of Ratio % exceeds minor, which is 100.15, hence i have performed flange rigidity calculation with the below inputs

Externally Applied Moment ..... (optional) ....(N.m. ) 13360.000
Externally Applied Force ...... (optional) .......(N. ) 3947.000
Pressure [P]...............................(kg./sq.cm.) 140.000


And the result of Rigity method is that, it is ok (pass) in Operating and fails in Seating as below

CALCULATED STRESSES (kg./sq.cm.)
OPERATING ALLOW SEATING ALLOW
--------- ----- ------- -----
Longitudinal Hub .. 1513 2710 3436 2710 *
Radial Flange ..... 1367 1807 3102 1807 *
Tangential Flange . 1028 1807 2333 1807 *
Maximum Average ... 1440 1807 3269 1807 *
Bolting ........... 1544 1498 6174 1498 *
"*" Indicates Failure for an item.
STRESS SAFETY FACTOR: (If less than one then joint
failure is predicted.) (Allowed/Actual)
OPERATING SEATING
--------- -------
Longitudinal Hub .... 1.79 0.79
Radial Flange ....... 1.32 0.58
Tangential Flange ... 1.76 0.77
Maximum Average ..... 1.25 0.55
Bolting ............. 0.97 0.24

Please help me the way to proceed.