HI,
I am trying to perform a Flange leakage check for ISO EN 1092 flanges using EN-1591-1 calculation module in C II. I end up getting some illogical error messages Like the one attached . I am currently using

C II -2019 Ver 9.00 Service pack 1 Build 5900 Hotfix 2 (5902).

1) Can any one confirm if there is any bug in this module and do i need an upgrade to get over it . Or is there any error in the attached file . ( I am trying PN 16 150 DN Flange for a sample check)

2) Is it possible to arrive at recommended bolt tensioning Torque values using this evaluation. Can i use the results from C II and build on it to arrive at the torque values.

Thanks ,
Anand !!