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Nuclear power plants
Musil, Jiří ; Šnajdárek, Ladislav (referee) ; Pospíšil, Jiří (advisor)
This bachelor's thesis deals with history and future of nuclear reactors, it describes nuclear power plants in the Czech Republic and provides a list of promising possibilities of using nuclear energy, that are currently in research. Description of the secondary circuit based on Czech nuclear power plants is also included in this thesis. In the beginning, some elementary knowledge about nuclear energetics is gathered, to provide readers with basics of this topic.
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Nuclear Fuel Cycle of Temelin NPP
Ježek, Martin ; Zlámal, Ondřej (referee) ; Katovský, Karel (advisor)
This bachelor's thesis deals with the central part of a fuel cycle in the power plant of Temelín. It describes generally the whole fuel cycle, from the process of uranium mining up to permanent storage of burned-up material and it shortly mentiones possibilities of its remaking. Neverthless, the main point is the middle part of the fuel cycle. In the next parts, the thesis concentrates on the power plant of Temelín. It describes shortly the WER-1000 reactor, which is being used there, and the active zone as well. There is a further description of both fuels used there, a fuel form a Russian corporation of TVEL, which is used nowadays, as well as a fuel from an American corporation of Westinghouse used in the past. The thesis then deals with the development of a fuel cycle from the moment of launching the power plant up to the present. The problems with the fuel from the American corporation are mentioned here as well. Then it concentrates on more-than-year long cycles and tries to quantify their contribution. The thesis contains a very simple project of an elongated fuel cycle and his evaluation from the point of working economy and organisation of shutdowns.
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Nuclear Fuel Margins Increasing at Nuclear Power Plant Dukovany
Vrábel, Radek ; ČEZ,, Ondřej Zlámal, (referee) ; Katovský, Karel (advisor)
This bachelor‘s thesis deals with power uprates and the extension of the nuclear fuel cycle at Czech nuclear power plants. The beginning of this thesis aims at improving the reader’s knowledge about nuclear reactors and nuclear fuel cycle. A whole chapter is dedicated to the development of nuclear fuel cycle at the nuclear power plant Dukovany. The progress in the field of nuclear fuels complements the development of the nuclear fuel cycle, thus providing visible benefits.
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Analysis of the Most Common Causes of Nuclear Fuel Failures During Operation
Ježek, Martin ; ČEZ,, Ondřej Zlámal, (referee) ; Katovský, Karel (advisor)
Nuclear fuel failures during the reactor operation happen quite often in the world. The theoretical part of this thesis is dedicated to the most common causes of nuclear fuel failures. It describes failure mechanism and corrective actions. The unfavorable trends in nuclear fuel behavior are prevented by suitable method of nuclear fuel monitoring. Some of them may affect the safety of the power plant. For example, the fuel assembly bow affects the function of rod cluster control assembly. Another part, which describes inspection methods, is devoted to inspection and repair of nuclear fuel. The thesis concentrates on the Temelin NPP, where there was implemented post-irradiation inspection program for checking compatibility between Westinghouse's fuel assemblies and water chemistry of reactor VVER. This program continues even after the change of nuclear fuel supplier. Practical part of this thesis is dedicated to proposal of a new method of fuel assembly bow measurement for Temelin NPP based on ultrasound. This proposal is supported by measurement on the experimental device for detection of spacer grid position developed by Research Centre Rez.
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Nuclear Fuel for Pressurized Water Reactors
Smetana, Jan ; Vojáčková, Jitka (referee) ; Katovský, Karel (advisor)
This bachelor thesis deals with structural characteristics of nuclear fuels, where most of the attention is paid to pressurized water reactors. The examples of the nuclear fuels implementation for each reactor type are mentioned for reader's better understanding. A brief history of pressurized water reactors is also listed, VVER reactors particularly. The nuclear fuel development for pressurized water reactors is demonstrated on the example of the development of fuel for our nuclear power plants Dukovany and Temelin, changes of fuel structure are emphasized. In the thesis there is also carried out a computational comparison of several selected parameters of used nuclear fuel during the operation of the nuclear power plant Dukovany.
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Nuclear power plant accidents and their impacts
BOROVKA, Petr
This bachelor thesis deals with the issue of nuclear power plant accidents. First the basic terms for nuclear energy are explained. Then the reactor and the types of reactors used are described. Furthermore safety systems for nuclear energy are analyzed and examples of systems used are given. The Temelín nuclear power plant is described, because of comparison that comes afterwards. After that the topic moves on to the description of three serious accidents of nuclear plants. Specifically accidents at the Chernobyl nuclear power plant, the Fukushima nuclear power plant and the Three Mile Island nuclear power plant. Furthermore in the following chapters a comparison was made of the individual described accidents with the Temelín nuclear power plant. For the Chernobyl accident the comparison consists of comparing the biological shield with containment, xenon poi-soning and positive cavity coefficient, control rods, backup types of power supply, and finally the explosion during the accident is analyzed. For comparison with the Fukushi-ma accident, the risk of natural disasters in the area where the Temelín nuclear power plant is located is pointed out also an analysis of rivers near the nuclear power plant was made. With the Fukushima accident, the differences in containment structures and the risks associated with the accident are described. Furthermore, the accident of Three Mile Island was compared with the accident at the Rovno nuclear power plant, as it was the same type of accident with different results. Then a comparison was made in measuring the water level in the reactor and the procedure for measuring the water level for the VVER-1000/V320 type reactor was described.
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Nuclear Power Plants Design and Safety: A Case Study of the Temelín Nuclear Power Plant
Marečková, Kristýna ; Baumgartnerová, Alena (referee) ; Ellederová, Eva (advisor)
Bakalářská práce je případovou studií jaderné elektrárny Temelín. Jejím cílem je popsat projekt, princip provozu a bezpečnostní opatření jaderné elektrárny Temelín, porovnat projekty a bezpečnostní opatření vybraných jaderných elektráren v České republice i mimo ni a diskutovat výhody a nevýhody jaderné elektrárny Temelín ve srovnání s ostatními vybranými jadernými elektrárnami. Práce je založena na rešerši literatury z různých zdrojů, aby byla zajištěna její maximální validita. Zdroje zahrnovaly odborné knihy, články, brožury, online přednášky, virtuální prohlídky a interní výukové materiály. Lze konstatovat, že jaderná elektrárna Temelín je Státním úřadem pro jadernou bezpečnost a jejími provozovateli udržována na vysoké bezpečnostní úrovni. Přestože má projekt mnoho výhod, existují i určité nevýhody, které však nemají na bezpečnost této jaderné elektrárny zásadní vliv.
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A Discursive Analysis of the Changes in the Perception of Ecological Activism and Eco-terrorism
Haratíková, Alexandra ; Vávra, Martin (advisor) ; Šťovíčková Jantulová, Magdaléna (referee)
The diploma thesis analyzes the way in which ecological activism and eco-terrorism were described in 1997 and 2019 in the Lidové noviny and Právo dailies and tries to find the most significant similarities and differences between the two media discourses. The analysis is carried out with the use of Norman Fairclough's critical discursive analysis. The work is divided into a theoretical and an empirical part, where the former pays attention to the definition and beginnings of environmental activism and eco-terrorism and the most significant manifestations of ecological activism in the studied years - the completion of the Temelín nuclear power plant for 1997, and Greta Thunberg for 2019. The research part analyzes the discourse of ecological activism and eco-terrorism in the studied years, and compares them. The aim of the work is to capture the essence of these two discourses, their actors, main topics and arguments. The conclusion of the empirical part consists of comparisons between the two discourses and a discussion of their differences and similarities. Keywords Norman Fairclough, critical discourse analysis, ecological activism, eco-terrorism, media discourse, Temelin, Greta Thunberg
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Assessing the location of a location for placement of deep geological repository of RAW and RAW in terms of long-term safety - Temelín - South site (ETE-J)
Havlová, V. ; Pertoldová, J. ; Hroch, T. ; Štědrá, V. ; Jankovec, J. ; Říha, J. ; Červinka, R. ; Baier, J. ; Černý, M. ; Dudková, I. ; Dušek, K. ; Franěk, J. ; Gondolli, J. ; Gvoždík, L. ; Hokr, M. ; Holeček, J. ; Jelínek, J. ; Kachlíková, R. ; Kaláb, Zdeněk ; Klajmon, M. ; Kolomá, K. ; Královcová, J. ; Kučera, R. ; Kryštofová, E. ; Maryška, J. ; Milický, M. ; Ondra, P. ; Pacherová, P. ; Peřestý, V. ; Polák, M. ; Řihošek, J. ; Rukavičková, L. ; Steinová, J. ; Svoboda, J. ; Šír, P. ; Uhlík, J. ; Vašíček, R. ; Vavro, Martin ; Vopálka, D. ; Zeman, O.
This report summarises outline of a report for evaluation of the sites‘ suitability for the emplacement of a deep geological repository on the basis of the archive information and the geological survey conducted from surface.\nSites are evaluated according to the following criterion categories\n1. Geological characteristics of the site\n2. Hydrogeologic characteristics of the site\n3. Transport characteristics of the the site\n4. Site stability\n5. Factors, increasing probability of human intrusion into the site\n6. Acceptability of enginnered barrier properties under site conditions
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Development of public opinion on nuclear energy in the Czech Republic after 1985
Želízko, Jaroslav ; Koudelková, Petra (advisor) ; Rosenfeldová, Jana (referee)
The bachelor thesis deals with public opinion on nuclear energy in the Czech Republic. The first part of the thesis deals with the theoretical knowledge that is related to the given issue. It focuses on the concepts of public relations, nuclear power station, communication with the public. The second part is divided into three sub-units. The first part examines the public opinion on nuclear energy in our country through a questionnaire survey. The second part is an interview with a public relations experts. Subsequently, the data thus collected is compiled, compared and discussed including recommendations.
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