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Possibilities of increasing electric supply from Nuclear power plant Dukovany
Veselý, Jakub ; Petz, Petr (referee) ; Raček, Jiří (advisor)
Subject of the thesis is to describe the ongoing possibilities to increase the electric supply from the Dukovany Nuclear Power Plant and monitoring the selection of the new ultimate heat sink of important technical water system in Dukovany Power Plant. In the first part of the thesis there is a short overview of nuclear power plants in the Czech Republic and around the world. In the following chapters there is a description of a project dealing with increasing the electric supply from the Dukovany Nuclear Power Plant – project Safety 16 Terra EDU [16] and its parts – subproject Utilization of project reserves [19] and subproject with the goal to reduce the shutdowns. In the last part there is a monitoring the selection of a new ultimate heat sink – tower fan – in case of loss current cooling towers due to an extreme wind.
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Increased performance turbo machinery in EDU the NPR changing
Bašta, Tomáš ; Kracík, Petr (referee) ; Fiedler, Jan (advisor)
The Diploma thesis on the topic of Increased performance turbomachinery in EDU the NPR changing describes in detail some important devices of technology system of the secondary circuit of Dukovany Nuclear Power Plant together with their task in the thermal circulation. There is a computational model of secondary circuit according to the present thermal schema created in the main part of the thesis. At the end of the thesis, the possibilities of the increase of the terminal power of turbomachinery, specifically of the turbogenerator, by the exhange of low-pressure heaters (NPR) are stated. Obtained results are documented by drawings of the thermal schemes.
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Parking house of NPP Dukovany
Marečková, Andrea ; Rosendorf, Aleš (referee) ; Boleslavská, Yvona (advisor) ; Matějka, Libor (advisor)
The subject of the bachelor thesis is to solve the crisis situation of parking at the Dukovany Nuclear Power Plant. Parking areas in front of the company are still the same, but the number of cars is growing rapidly. Therefore, the power plant management decided to solve this situation. Two nearly identical parkades were designed for this area to cover the capacity of 1572 parking spaces. It is a simple design of a 5-storey prefabricated building made of reinforced concrete columns, beams, SPIROLL panels and other elements. For better bracing of the building, the vertical communication cores were designed as monolithic reinforced. The façade of the building consists of a suspended structure fitted with expanded metal, which will help with incoming light and also with the exchange of degraded air in the garages. On the first floor there is a parking space for 142 cars, of which 4 are parking stalls for charging electric cars and 10 stalls for designated handicap parking, all these stalls are located only on the ground floor for easier access of the car owners. In addition to these parking stalls, there are three vertical communication cores with staircases and elevators. At one communication core is also a sanitary facility with toilets for men, women, for people with disabilities and cleaning room. Two ramps are designed for vertical crossing of cars in the middle of the ground plan. Self-service washing boxes and utility room were designed according to requirements. The second and subsequent floors are identical. There are 161 parking stalls on each floor, 4 of them are for charging electric vehicles. There are also sanitary facilities and a utility room. For the safety of pedestrians, the entire parkade is marked with horizontal roads, thanks to which the employees get from their cars to the communication core and out of the building.
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Facelift PDU
Růžičková, Tereza ; Kyselka,, Mojmír (referee) ; Nový, Alois (advisor)
The theme of the diploma thesis is the solution of the pre-plant zone of the Dukovany nuclear power station. Creating a vision of how this space could develop further in the next 50 years and how it could work in a transitional phase during the construction of a new nuclear power plant unit. The subject of the thesis is the elaboration of an architectural study, which is based on an urban study. Urban study was processed within the framework of the pre-diploma thesis and solved mainly the overall problems of this area, the new transport connection, and the functional division of the whole area. The area was divided into three functional units, namely the transport zone, the administrative zone and the sports and education zone. At present, there are a lot of small structurally and functionally unsuitable buildings in this area. The diploma thesis deals with the design of new buildings with a clear functional use in the administrative zone, in the area in front of the main gatehouse. A new representative square was created, and three buildings are designed around it. The dominant feature of the whole area was a high-rise office building near the gatehouse. In front of the office building, towards the main road, the service building I was designed, which contains business and healthcare services. On the other side of the square was located the service building II, where there are technical services, such as workshops, warehouses and metrology. The last building solved within the diploma thesis is the building of sports and locker rooms of suppliers, which is designed behind the square near the greenery. New building copies mass of the only preserved building in this area, namely the building of the information centre. The designed building has a fitness centre and locker rooms of external workers of the power plant.
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The heat dissipation efficiency of the steam generator Dukovany at low water levels
Veselý, Jakub ; Šnajdárek, Ladislav (referee) ; Pospíšil, Jiří (advisor)
The goal of this thesis is to simulate the course of events during Dukovany Nuclear Power Plant blackout and to determine the optimal process of cooling down the cold branches of the primary circuit loops to secure the maximum amount of the primary fuel needed for the residual heat outlet so that the operating staff has as much time as possible for renewing the electric power supply. The first part of the thesis describes nuclear power plants built in the Czech Republic and in the world as well as reactor blocks whose construction is being considered. The detailed description of Dukovany’s steam generator is shared in chapter three. Following chapter summarizes blackouts that occurred at power plants around the world, events that might have led to blackouts in the Czech Republic, and it also describes current approach to blackout problematics at Dukovany Nuclear Power Plant. Chapters six and seven contain the core of the thesis. That includes detailed description of a mathematical model explaining the behaviour of a reactor block during blackout as well as the analysis of the results found.
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Determination of the temperature reactivity coefficient for Nuclear power plant Dukovany
Klíma, Jakub ; Bajgl, Josef (referee) ; Raček, Jiří (advisor)
This thesis deals with the re-determination of the temperature reactivity coefficient of the Nuclear power plant Dukovany, which is measured within the physical test Reheating of the cooling to 260 °C. This paper contains description of the types of nuclear reactors launching, list of tests which are performed during these startings and it also describes methods for determination of temperature reactivity coefficient. Last part of this thesis includes description of programme which was created for determining temperature reactivity coefficient from given files and verification of its calculating methods by statistical test.
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Manufacture of nut tightening device for reactor cooling pump's impeller
Rygl, Filip ; Slaný, Martin (referee) ; Kalivoda, Milan (advisor)
This thesis solves the problem of design and production of a special mounting device for the impeller nut of the main circulation pump GCN-317. The proposed device is intended to solve the problems associated with the mounting and dismounting of this nut. The work provides basic information about the Dukovany Nuclear Power Plant and VVER-440 systems in general, including their brief history. It also introduces the operational and legislative environment of the primary circuit of the nuclear power plant. It deals with the task and technical description of the main circulation pump and its overhaul. The following sections present the basic principles of construction of the device and an overview of its components with a description of their purpose and method of production. The last part of the thesis describes the function of the device and its verification and reports on its deployment.
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Ionizing Radiation, Residual Heat Generation, and Inventory of Spent Nuclear Fuel
Hájková, Barbora ; Šťastný, Ondřej (referee) ; Katovský, Karel (advisor)
This bachelor's thesis deals with ionizing radiation, residual heat generation, and inventory of spent nuclear fuel. It introduces types of ionizing radiation and half-life of isotopes, which are contained in the nuclear fuel. Furthermore, using code UwB1, a simulation of the burning of nuclear fuel used at the Dukovany Nuclear Power Plant from the introduction of fuel into the reactor to its storage in deep repositories in 2065, is carried out.
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Design of The Data Communication Between Digital Protection Relays and Monitoring System of Dukovany Nuclear Power Plant
Šula, Vladimír ; Topolánek, David (referee) ; Toman, Petr (advisor)
This thesis describes the provision of the data communication of the new protection relays via 6 kV switch gears to the electro monitoring system at the Dukovany Nuclear Power Station. These protection relays will replace the current analog protection. The replacement process will start in 2015 and will finish in 2018. Given the overall complexity of the project, this thesis deals only with the following 6 kV switch gears 9BB and 9BD. The thesis is divided into a theoretical and a practical part. The theoretical part concerns the actual consumption and output of the Dukovany Nuclear Power Station. The following chapters describe the electro monitoring system and GRAF and LOGA software programs that are closely connected with it and that were used in the practical part. The last chapter of the theoretical part deals with the actual replacement of the protection relays of the 6 kV switch gears. Also, it describes a new optical network, which will be set up at the Dukovany Nuclear Power Station as a part of the process of replacement. The segment of the practical part concerns laboratory verification of the data communication of the new protection relays. Next, it describes actions that had to be taken in order to ensure and verify correct functionality of the data communication. This part is followed up by a closely related practical activity, which describes examination and verification of the protection functions of each of the 9BB and 9BD switch gears protection relays.
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Warming and Starting Nuclear Unit up of the Dukovany NPP after the Outage
Ludvík, Lubomír ; Suk, Ladislav (referee) ; Katovský, Karel (advisor)
This thesis deals with the analysis of warming and starting up the nuclear unit of Dukovany NPP after the outage. First part explains the various operating modes of nuclear power plants, specifically operating modes of Dukovany NPP. The following part contains the analysis of heat sources in the primary circuit and also the individual production and consumption of steam by the NPP. The next part deals with division into several points of the warming of the Dukovany NPP. The analysis of warming nuclear unit after a outage is made on the basis of the industry based data, measured in December 2015. The result of the analysis is determination the amount of steam passing from a another nuclear unit, which is following by the own proposal of the external steam source.
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