Dears,

I tried using the option of F>1 since the user guide informs that if you start using 2 it counts it as cycles and calculates F but it doesn't do that with me, although the material is API 5L GrB and temperatures reach 427C.

This is actually OVHD code drum piping designed to work for 18hrs but the client wants to reduce to 13.5 hours. Contractor used F=0.76 which is most probably for 18hrs so is there a way to let CII calculate F by giving new cycles anticipated by client?