UG32-e

Section VIII, Division 1 does not have either a screening method or a procedure for performing a fatigue analysis. However Section VIII, Division 2 has both. However it is still acceptable to build and stamp a vessel in cyclic service to Section VIII, Division 1 but to do the fatigue analysis per Section VIII, Division 2. There is no requirement for a vessel to be built to Section VIII, Division 2 simply because it is in cyclic service. On the other hand Section VIII. Division 1 vessels are not exempt from fatigue analysis because they are not built to Section VIII, Division 2.

from: "Pressure Vessel Design Manual, Dennis R. Moss, Michael M. Basic"