State and Prospects of Containment Tightness Tests for VVER-1000 Reactor Installations - V. P. Kravchenko; A. P. Vlasov; A. M. Holovchenko; A. S. Mazurenko; V. O. Dubkovskyi; O. O. Chulkin (Nuclear and Radiation Safety (Scientific and technical journa), 2023)