Selecting optimal conditions for the turbine warm and hot start-up Andrzej Rusin, Grzegorz Nowak, Henryk Łukowicz, Wojciech Kosman and Tadeusz Chmielniak E3S Web Conf., 137 (2019) 01025 Published online: 16 December 2019 DOI: 10.1051/e3sconf/201913701025