Nonlinear Analysis Fire and Explosion using LS-Dyna or ANSYS

I have one model offshore that were designed based on BENTLEY SACS and by that I wanted to convert it on LS-Dyna or SACS to CFD to observe  blast and fire effects & loading and then for non linear analysis of structural.

I just want to seek expert opinion based on  industrial/ peronal experience  that LS-Dyna is compatible with SACS ? Can I export my SACS model to avoid developing all sophisticated details of offshore rig? LS-Dyna or ANSYS for Nonlinear Analysis Fire and Explosion which one is more powerful using these software or any other useful recommendation for the usage of software will be highly appreciated. 

I would highly appreciate your useful suggestion upon this matter.