Based on static/dynamic analysis, optimal system specifications are determined and Risk Assessment (HAZID/HAZOP/FMEA) for stable operation is performed. In particular, in order to respond to recent IMO environmental regulations, we have secured our own technology and FGSS (Fuel Gas Supply System) installed on LNG Fueled Ships, and we are providing customized engineering services through various case reviews using the ASPEN HYSYS process analysis program.