Fukushima-Daichii accident highlighted the relevance of accident management strategies for core damage sequences. In that sense, the design, review and assessment of the Severe Accident Management Guidelines (SAMG) is crucial, and operators training under realistic conditions, essential. ENSO offers independent assessment of SAMGs by using severe accident system codes as well as the design and implementation of customized Severe Accident scenarios for operators support and training. ENSO also offers full scope simulator solutions by implementing customized NPP simulators and transients using RELSIM and GRAPE simulator environments.