With so many load cases you may want to use CAESAR II's SignMax/SignMin load case combination to pick out max & min values.

Add two more load cases at the end of your list:
L44: L1,L2,...,L43 (SignMax)
L45: L1,L2,...,L43 (SignMin)

Replace the "..." with all the load cases you wish to include in the search.

Under Load Case Options, select the combination method shown above.

E.g., for SignMax, CAESAR II will list the largest value for each reported item over the group of load cases selected.

Regarding the DLF=2...

There may be some initial velocity present but using a max of 2 is documented. It will be published in the B31E document. It is also listed now in American Lifelines Alliance document on Seismic Design of piping systems. Google that and download.