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Applications of titanium alloys
Košťál, Jan ; Kaštyl, Jaroslav (referee) ; Němec, Karel (advisor)
This bachelor thesis will deal with titanium and titanium alloys, their properties and appropriate application in mechanical engineering and other branches. The first part is devoted to the pure titanium, describes technology of production, there are also briefly mentioned physical, chemical and mechanical properties, and according to them the position of titanium among other elements. The main part is focused on the different types of titanium alloys, their properties, production and processing. The conclusion is devoted to the use of pure titanium and its alloys in different industries.
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Knihovna pro práci se soubory formátu Office Open XML
Košťál, Jaroslav
The thesis deals with a library for working with Office Open XML Files -- spreadsheet files --, with its analysis, suggested layout, and implementation. It includes a specification of a standard spreadsheet file and of ways of creating such files. Based on studied theory, a layout is suggested for a library for reading and recording data, and for implementation of such a library in the C# language, which offers interface suitable for working with this type of documents.
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Safety assessment of Temelin NPP
KOŠŤÁL, Jaroslav
History of peaceful use of nuclear energy, despite of all necessary emphasis on operation safety, is accompanied by a series of accidents, some of which left indelible trace in minds of wide public and so led to changes in the comprehension of nuclear safety and in the access to its preservation. Because the consequences of possible nuclear power plant accident have always serious social impacts, it is most desirable to define all possibly risks, to quantify probability of their formation and in this way to gain the possibility to prevent them effectively and efficiently. This work is dedicated to approve or to disapprove that the KARS method is practically applicable for evaluation of nuclear power station operation safety. The work objective is to evaluate events and risks associated with the operation of a particular nuclear facility by the KARS method and critically evaluate obtained results and the used method as such. The work is divided into theoretical and practical part. Theoretical part includes basic information necessary for correct understanding of the chosen data processing procedure and subsequent interpretation of the gained results. A brief overview of basic concepts relating to the nuclear safety, the safety culture and the emergency preparedness, including their definitions is given in this section of the work. For the evaluation of obtained results it is useful to make familiar with basic concepts of the NPP safety evaluation, PSA and the stress tests. Obviously, it is necessary to describe the KARS method and to define the concept of quality of human performance with regard to the obtained results. The risk analysis by the KARS method was carried out in the four consecutive steps: 1. Data collection for the risk analysis. 2. Data processing by the use of the KARS method. 3. Interpretation of the obtained results. 4. Comparison of the obtained results with the available data. The particular risks for the construction of the risk correlation table were based on the analysis of activities of individual members of the emergency and technical support center on the basis of managing documentation for each function. In the emergency instructions these risks are either named or the action to manage them are determined. Subsequently these risks are further more specify according to the operational documentation used for solving abnormal and emergency conditions or solving of severe accidents. Determination of the risk correlation seems to be subjective and requires a considerable degree of professional insight into the analyzed issues. The risk analysis was processed according to the procedure that was laid down by Ing. Stefan Pacinda, Ph.D. Each risk taken into consideration in this analysis is briefly described within the interpretation of obtained results. The coefficients of activity with the biggest value were found for these risks: human error, earthquake, plane crash, terrorist threat, errors in operating and managing documentation and fire. The coefficients of passivity with the biggest value were found for these risks: human failure, serious damage to health, ecological disaster, components malfunctions, radiation accident, nuclear material integrity damage and control system malfunctions. Comparison of the risks that were postulated in the stress tests and the risks that were considered in this analysis indicate that the ETE NPP emergency response was prepared to be able to cope these risks. Results of this analysis showed that the essential element for the safe operation of nuclear power plants is qualified, well selected and systematically trained staff. In light of the experience acquired during elaboration of this work I have concluded that the KARS method can be used for nuclear safety evaluation only in a limited way.
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The emergency response organization of NPP Temelín operator
KOŠŤÁL, Jaroslav
This work deals with Organization of Emergency Response in NPP. According assignment this work summarizes its legal preconditions and consequently gives description of its practical realization. The necessary terminology is gathered and the basic overview of OER functioning is given. An attention is paid to staffing, structure and number of workplaces, the used documentation and also to the system of its readiness and functionality verification. The intent is to define the essential aspects of nuclear safety and to describe system of emergency planning and response in condition of real nuclear facility. In the second part of work a comparison of Stress Tests of EDU and ETE NPPs in the reason to evaluate how the goals of Emergency Response are met. The comparison of Stress Tests results is done in shape of tables. My interpretation of the established facts is: 1.The probability of earthquake exceeding the design resistant of structures, technological systems and structures is practically insignificant. The results are for both locations virtually identical. The project robustness of ETE NPP to earthquakes is slightly higher than EDU. 2.The flooding robustness of both our NPP sites is high. Both NPPs are due to its location very resistant to rain water flooding. To ensure a high level of resistance to rain water flooding requires regular maintenance of drainage systems. 3.EDU and ETE NPPs are resistant to earthquakes and in this way they are resistant to the extreme weather condition especially to the gusty wind too. 4.Secured power internal consumption supply systems on EDU and ETE NPPs are projected according to analogical basics and are enough robust to failure from common cause. To secure safe down-cooling of reactor unit the only one independent power supply system is sufficient. In project of ETE NPP there is in comparison with EDU NPP the next system of common independent power consumption supply. It is primarily intended to prevent damages in technology of secondary circle. Two DGs strongly improve the resistance of unit to SBO accident. 5.Heat removal from separate technological systems is on both power stations realized by using of analogical cooling system. Constructional differences in projects of our power stations are given by different time of their project works. There is a possibility that cooling systems of EDU NPP will be improved. 6.System of severe accident management is organized in the similar way at both facilities. The staff of Accident Board and Technical Support Centre is analogical. Recently the staff of TSC was reinforced to improve its ability to cope the multiply accident on several units. The documentation for solving of abnormal states, accidents and severe accidents has got the same basic structure. Procedures and guidelines are continually improved. Attention is paid to verification and validation of these procedures. 7.On the basis of performed Stress Tests there is a high possibility of gradual realization of partial administrative, personal and technological improvements that will be done in reason to improve Nuclear Safety and Organization of Emergency Response. The specific measures are summarized in the National Action Plan. An absolute elimination of an accident is impossible, but the probability of an accident with fuel degradation must be as low as it is reasonably possible to achieve. The NPP must be able to diminish the impacts of such event to the generally acceptable low. The ability to manage such events is the major goal of Emergency Response that should be taken as a sophisticated interdisciplinary system.
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Post-Communist Syndrome: a Mental Heritage. A Theoretical Framework and Empirical Findings
Klicperová-Baker, Martina ; Feierabend, I. ; Košťál, J.
The article discusses post-totalitarian symptoms and the concept of post-totalitarian syndrome which can explain mentality of some dissatisfied Eastern European citizens. The current Czech post-totalitarian conditions are analyzed in terms of specific grievances and human needs; it is suggested that the disappointed include numerous frustrated but otherwise pro-democratic citizens. Complaints focus on economic insecurity (fear of unemployment, lack of security at the old age), crime (both white collar economic and street crime), lack of overall safety and disappointment with the general decline of interpersonal relations. Although respondents found it much easier to be upset with the current circumstances than with the totalitarian past, direct questions referring to the pre-1989 police state revealed an overwhelming awareness of and frustration with it. The most intense current anger is provoked by misconduct of politicians, yet democracy as a regime is not doubted.
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Country Report: The Czech Republic
Klicperová-Baker, Martina ; Franke, Helena ; Schwarz, Petr ; Košťál, J.
Research report on the Czech aspect of European citizenship – the state of ethno-national diversity, migration, gender situation, attitudes to the EU, understanding of the European polity and European public sphere. The study brings original results of a representative survey of Czech citizens (N=1037) in addition to the first, preliminary results of media analysis and interviews with political and cultural elites. This volume, the Czech contribution to international Eurosphere project, is a part of a series of 16 Eurosphere country reports, it serves also as a framework for interpretation of Eurosphere empirical results. It contains a number of graphs, tables and illustrations. It is complemented by illustrations by a cartoonist Miroslav Kemel.
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Attitudes of Czech Public to Democratic Creed and Freedom
Klicperová-Baker, Martina ; Feierabend, I. K. ; Košťál, J.
The paper consists of two chapters. The first reviews social psychological predispositions for democracy (civic political culture, civic éthos and civic nationalism) and presents empirical results illustrating shared and distinct attitudes to democracy and freedom in four nations – Czech and Slovak Republics, Belarus and Bulgaria. Second part analyzes attitudes of Czech citizens to the life under totalitarian conditions and to the life in freedom (presents characteristics of respondents who oppose or welcome the political changes and analyzes what particular aspects of life are most upsetting for citizens in the current society and which made them most distressed in the past conditions of unfreedom. Comparison of present life with the life before 1989 is based on responses of a representative sample of the Czech Republic.
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