TransientGroup developed a dynamic model of Arenales Steam Sealing Turbine line on ISAAC Dynamics platform. This model has performed a detailed fluid-thermodynamic study on the whole steam line, with the purpose of delineate the trend of mass flow, pressure, temperature and heat loss. It was also considered: Varying environmental conditions Thermal insulation efficiency Piping deadlines and condensates influence on main branches Heat losses due to metallic pipe supports