Can the platform acceleration loads on piping be checked
with static analyis
as fatigue loading for say 10yr cycles ?

would it be conservative than a dynamic analysis

Are you dealing with a fixed (piled steel/ gbs) platform or some kind of FPSO ?

Its piping within a skid on a FPSO. The loads are as per NORSOK std.s

You could define these accelerations as "G" loads, and then call the load case FAT providing the desired number of cycles.

How do you change the units from Unit/length to G?

all versions: In Special Execution parameter

5.3: also in Uniform loads window