Results 71 to 80 of about 375 (173)

Investigation of Coolant Mixing in Reactor VVER-1000

, 2011
We present an experimental investigation of coolant mixing in downcomer and lower plenum of VVER-1000 here. The arrangement of the problem, the methodology and results are discussed. Three groups of experiments simulating coolant mixing were executed: in conditions of RCP start-up, during natural circulation recovery in the course of SB LOCA and in ...
Lysenkov E. A., Bezrukov Yu. A., Ulianovskiy D. V., Zaytsev D. V., Bykov M. A., Shishov A. V., Moretti Fabio, Del Nevo Alessandro, D’Auria F., Rohde U., Höhne T., Gallori Daniele   +11 more
openaire   +3 more sources

Estimation of Control Rod Worth in a VVER-1000 Reactor using DRAGON4 and DONJON4

Nukleonika, 2014
One of the main issues in safety and control systems design of power and research reactors is to prevent accidents or reduce the imposed hazard. Control rod worth plays an important role in safety and control of reactors.
Saadatian-derakhshandeh Farahnaz, Safarzadeh Omid, Shirani Amir Saiid   +2 more
doaj   +1 more source

Comparative Analysis of Emergency Planning Zone and Control Room Habitability for Potential Nuclear Reactor Deployment in Ghana. [PDF]

Int J Environ Res Public Health, 2022
Christina P, Kim J.
europepmc   +1 more source

Changes to Irradiation Conditions of VVER-1000 Surveillance Specimens Resulting from Fuel Assemblies with Greater Fuel Height

EPJ Web of Conferences, 2016
The goal of the work was to obtain experimental data on the influence of newtype fuel assemblies with higher fuel rods on the irradiation conditions of surveillance specimens installed on the baffe of VVER-1000.
Panferov Pavel, Kochkin Viacheslav, Erak Dmitry, Makhotin Denis, Reshetnikov Alexandr, Timofeev Andrey   +5 more
doaj   +1 more source

Methods and means of ensuring the accuracy of bending deformation measurements of connecting pipe between the VVER reactor and the steam generator in the conditions of a fuel campaign

Глобальная ядерная безопасность
The welded joint zone (WJ) No. 111 is a welding unit for the "hot" collector of the primary coolant to the DN1200 steam generator nozzle. The experience of operation of steam generators PGV-1000M of NPP power units with VVER-1000 shows that the WJ zone ...
Yu. V. Krasnikov, V. P. Povarov, A. M. Stepanov, S. G. Fish   +3 more
doaj   +1 more source

Role of passive safety systems in prevention and mitigation of severe accidents at nuclear power plants

Trudy Odesskogo Politehničeskogo Universiteta, 2022
Fukushima Daiichi accidents led to the worldwide update of the NPP safety requirements. Particular attention was paid to severe accidents both during the design of new NPP units and during the safety reassessment of existing ones.
Володимир Петрович Кравченко, Максим Павлович Вишемірський   +1 more
doaj  

Radioactive Source Specification of Bushehr’s VVER-1000 Spent Fuels

Science and Technology of Nuclear Installations, 2016
Due to high radioactivity and significant content of medium- and long-lived radionuclides, different operations with spent nuclear fuels (e.g., handling, transportation, and storage) shall be accompanied by suitable radiation protections.
Mahdi Rezaeian, Jamshid Kamali
doaj   +1 more source

Microstructure and Mechanical Properties of Ni-20Cr-Eu₂O₃ Composites Prepared by Vacuum Hot Pressing. [PDF]

Materials (Basel), 2023
Zhou Y, Yue H, Ma Z, Guo Z, Zhang J, Wang L, Yan G.   +6 more
europepmc   +1 more source

Synergies in VVER reactor long-term operation and aging: A comprehensive review of CAMIVVER, DELISA-LTO, and EVEREST projects

EPJ Nuclear Sciences & Technologies
This paper reviews the synergies between three Euratom projects–CAMIVVER, DELISA-LTO, and EVEREST–focusing on the long-term operation (LTO) and safety assessment of VVER reactors.
Hursin Mathieu, Perin Yann, Verrier Denis, Slugen Vladimir, Veternikova Jana Simeg   +4 more
doaj   +1 more source

Novel α + β Zr Alloys with Enhanced Strength. [PDF]

Materials (Basel), 2021
Veverková A, Preisler D, Zimina M, Košutová T, Harcuba P, Janeček M, Stráský J.   +6 more
europepmc   +1 more source