Increasing the efficiency of nuclear power plant equipment at the design stage Mikle Egorov, Anastasiya Ukolova, Ivan Kovalenko, Irina Krectunova, Nataliya Lavrovskaya and Nadezhda Litvinova E3S Web Conf., 178 (2020) 01008 Published online: 09 July 2020 DOI: 10.1051/e3sconf/202017801008