Study of burnup process in the VVER-1200 reactor with plutonium refueling options Dilmurod Tuymurodov, Abror Tuymuradov, Satimboy Palvanov, Asror Ramazonov, Sindor Ashurov, Mukadas Mamayusupova and Tursunali Khamidov E3S Web Conf., 417 (2023) 01008 Published online: 21 August 2023 DOI: 10.1051/e3sconf/202341701008