Problem:

Factor K and required thickness calculations are not matching with manual calculations in limpet coil on Heads, Why?

Solution:

In limpet coil, calculations of factor K is performed with respect to ASME Section VIII Div. 2 Clause 4.11.6.4.

Find below snap of code for reference.

ASME Section VIII Div. 1 and Div. 2 gives same set of information.

But ASME Section VIII Div. 2 has no limitations on the vessel diameter and Factor K can be calculated with numerical formula without any graph.

Hence, AutoPIPE Vessel calculates with respect to ASME Section VIII Div. 2.