СOMPREHENSIVE INVESTIGATION METHODOLOGY OF THE EFFECTIVENESS OF WAYS TO PERFECT NUCLEAR POWER PLANTS, USING THE EXAMPLE OF A COMPARATIVE ANALYSIS OF AN AUTONOMOUS HYDROGEN ENERGY COMPLEX

2020 ◽  
Vol 59 (2) ◽  
pp. 77-96
Author(s):  
V.E. Yurin ◽  
◽  
A.N. Egorov ◽  
A.B. Moskalenko ◽  
M.A. Murtazov ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Hydrogen Energy ◽  
Energy Complex

HYDROGEN-OXYGEN STEAM GENERATOR FOR A CLOSED HYDROGEN COMBUSTION CYCLE

2018 ◽  
pp. 68-79
Author(s):  
R. Z. Aminov ◽  
A. N. Egorov
Keyword(s):  
Steam Generator ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Combustion Products ◽  
Working Fluid ◽  
Hydrogen Energy ◽  
Energy Complex ◽  
Steam Turbine Plant ◽  
Oxygen Medium

The paper analyzes the problems of combustion hydrogen in an oxygen medium for produce high-temperature steam that can be used to produce electricity at various power plants. For example, at the nuclear power plants, the use of a H2-O2 steam generator as part of a hydrogen energy complex makes it possible to increase its power and efficiency in the operational mode due to steam-hydrogen overheating of the main working fluid of a steam-turbine plant. In addition, the use of the hydrogen energy complex makes it possible to adapt the nuclear power plants to variable electric load schedules in conditions of increasing the share of nuclear power plants and to develop environmentally friendly technologies for the production of electricity. The paper considers a new solution of the problem of effective and safe use of hydrogen energy at NPPs with a hydrogen energy complex.Technical solutions for the combustion of hydrogen in the oxygen medium using direct injection of cooling water or steam in the combustion products have a significant drawback – the effect of “quenching” when injecting water or water vapor which leads to a decrease in the efficiency of recombination during cooling of combustion products that is expressed in an increase fraction of non-condensable gases. In this case, the supply of such a mixture to the steam cycle is unsafe, because this can lead to a dangerous increase in the concentration of unburned hydrogen in the flowing part of the steam turbine plant. In order to solve this problem, the authors have proposed a closed hydrogen cycle and a hydrogen vapor overheating system based on it, and carried out a study of a closed hydrogen combustion system which completely eliminates hydrogen from entering the working fluid of the steam cycle and ensures its complete oxidation due to some excess of circulating oxygen.The paper considers two types of hydrogen-oxygen combustion chambers for the system of safe generating of superheated steam using hydrogen in nuclear power plant cycle by using a closed system for burning hydrogen in an oxygen medium. As a result of mathematical modeling of combustion processes and heat and mass transfer, we have determined the required parameters of a hydrogen-oxygen steam generator taking into account the temperature regime of its operation, and a power range of hydrogen-oxygen steam generators with the proposed combustion chamber design.

scholarly journals The comparative analysis of birth defects rates in regions of nuclear power-plants location

2010 ◽  
Vol 8 (2) ◽  
pp. 29-34 ◽  
Author(s):  
Nataliya S Demikova ◽  
Elena K Khandogina ◽  
Ludmila M Vorobyeva ◽  
Nataliya A Fedotova ◽  
Boris A Kobrinsky
Keyword(s):  
Comparative Analysis ◽  
Birth Defects ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Control Regions

The analysis of birth defects (BD) rates in regions of nuclear power-plants locations in comparison with control regions have been performed using BD monitoring database for 2000–2007 years. It has been shown that the BD rates in these regions don’t differ from BD rates in control regions, Russia Federation on the whole and some other countries. Receiving results indicate that the working of nuclear power-plants doesn’t lead to increasing of BD frequencies in these regions. 

Comparative analysis of cooling systems for energy equipment of combined heat and power plants and nuclear power plants

2016 ◽  
Vol 63 (7) ◽  
pp. 463-470 ◽  
Author(s):  
B. F. Reutov ◽  
M. V. Lazarev ◽  
S. V. Ermakova ◽  
S. L. Zisman ◽  
L. S. Kaplanovich ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Combined Heat And Power ◽  
Cooling Systems ◽  
Energy Equipment

Nuclear power pros and cons: A comparative analysis of radioactive emissions from nuclear power plants and thermal power plants

2012 ◽  
Vol 67 (1) ◽  
pp. 120-127 ◽  
Author(s):  
V. A. Gordienko ◽  
S. N. Brykin ◽  
R. E. Kuzin ◽  
I. S. Serebryakov ◽  
M. V. Starkov ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Pros And Cons

scholarly journals Operating Experience for Valves at the Nuclear Power Plants of Ukraine and the European Union

2019 ◽  
pp. 35-43
Author(s):  
Roman Serafyn ◽  
Oleksiy Ligotskyy ◽  
Svitlana Nedbay ◽  
Oleksandr Pecherytsia ◽  
Roman Khalenko ◽  
...  
Keyword(s):  
European Union ◽  
Comparative Analysis ◽  
Statistical Analysis ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Operating Experience ◽  
The European Union ◽  
Statistical Assessment ◽  
Support Organizations

The paper presents information on the results of analyzing operational events at nuclear power plants (NPP) of Ukraine and the European Union that were caused or related to the failures of valves. The first part of the paper provides a brief overview of the European Clearinghouse on Operational Feedback for Nuclear Power Plants study on operational events with failure of the valves important to NPP safety. The abovementioned study considered events for the period from 1997 to 2016, which were taken from the IAEA database, databases of technical support organizations of France and Germany, as well as those provided by the Swiss and Spanish regulatory authorities. The main results of the study were presented in the paper, and the main causes of operational events caused by valve failures were observed. In addition, technical areas that required the development of recommendations were indicated. The paper includes a statistical assessment and a detailed analysis of the root causes of operational events at Ukrainian NPPs caused by or related to the failure of valves of all types, regardless of the effect on safety, for the period from 1998 to 2018. The approach for the analysis of operational events at Ukrainian NPPs is similar to that used in the above-mentioned study. Within the framework of the statistical analysis, the distribution of operational events at Ukrainian NPPs related to the failure of valves by years, nuclear power plants and systems was presented. The results of the analysis of the root causes of valve failures was presented within three groups referring to equipment, documentation, personnel and management system. In the final part of the paper, a comparative analysis of the contribution of the root causes obtained from the results of both studies was carried out, and the general lessons and specific recommendations for further consideration during the oversight activity are presented.

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