The main goal of this Thesis was to measure tritium activity in the Vltava River and in the vicinity of Temelín Nuclear Power Plant (hereinafter referred to as JETE) with the following objectives: Possibility to use the outlet of waste water damping unit (hereinafter referred to as VTOOV) as a control alerting system for nonstandard events in JETE, furthermore, monitoring of possible correlations between volume activity of tritium measured in VTOOV and activity above the limit value of the first quality class in selected sections of the Vltava River as well as comparison of the measured values with the results of other authors, and, finally, assessment of the relevance of the water quality estimated by the volume activity of tritium to the water quality according to other ingredients, i.e., stable isotopes of some metals and risk elements as well as general physical and chemical indicators. Theoretical part of the Thesis deals with radioactivity in general, activity of tritium, with regard to operation of nuclear plants, over the world and, especially, in the Czech Republic. The actual work consisted of collection of samples at predetermined places, preparation of these samples for measurement and measurement of tritium activity using scintillation spectrometer with liquid scintillator. Furthermore, basic chemical and physical properties of water, concentration of selected elements and also some anions were determined. The collected data were used for classification of waters from individual collection places into quality classes according to ČSN 75 7221. In all analyzed cases no activities were found which exceeded the limit values of liquid outlets from Temelín Nuclear Power Plant, given by regulations issued on waters by the District Health Office in Ceske Budejovice according to §8 of Act No. 138/73 Coll., in compliance with SÚJB requirements. This Thesis could be beneficial for possible utilization of VTOOV as a control alerting system for nonstandard events in JETE and also for assessment of impact of wastewaters from JETE on waters of the Vltava River.

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.

The thesis deals with the perspective of the Austrian newspapers like Die Presse and Kurier on the Czech-Austrian relationship between years 1999 and 2004, or more precisely the issue of Temelín NPP. The main topics for the Austrian press became the approval of completion by the Czech government and of course the launch of Temelín NPP. Significant moments were the blockades and demonstrations of Austrian citizens at the Czech-Austrian border crossings, Austria's attempt to veto the accession negotiations between Czech Republic and EU or internal political struggle in the Austrian government.

This diploma thesis deals with activities of the Czech ecological organisations which were active in case of nuclear power plant Temelin after its breaking-in. The thesis is divided into four chapters. The first one focuses on the definition of the ecological organisation (movement). In the second chapter, the attention is paid to the history of foundation and functioning of the nuclear power plant Temelin. The third chapter is about advantages and disadvantages of the nuclear power. The last chapter focuses on the analysis of activities of the Czech ecological organisations which opposed or supported the nuclear power plant Temelin.

The thesis deals with the solution to evacuation of the population from the zone of emergency planning of the nuclear power station Temelín in the event of an incident connected with the release of radioactive substances . It analyzes the way of evacuation of the persons, as one of the most important safety measures to ensure protection of the population. In particular, the work focuses on the correct procedures in the case of realization of the evacuation and competence of the persons involved in safety measures. It lists the basic criteria which are applied in protection of the population from the effects of ionizing radiation in vicinity of nuclear power plants. It proposes improving of quality of security protection and information of persons in the zone of emergency planning. The work is based on valid law regulations and special publications of the examined problems. The predominantly part is based on the laws in force, and expertise of publications covering the evacuation of the area.It refers to the external emergency plan, as the basic document for the planning of measures for the disposal of the consequences of radiation accidents or radiation accidents and the limitation of their consequences for the zone of emergency planning. The theoretical part proceeeds from analysis of contemporary legislation concerning the stated problematics, presents the general characteristics of a nuclear device and zone of emergency planning, defining the basic concepts and discusses the important measures in addressing emergencies arising in connection with radiation accidents in nuclear power plant. The work puts emphasis on the principle of correct behaviour of the population in the event of such an accident. For the processing of the thesis there has been used an exploration method, which is based on the proposed methodology. On the base of analysis of survey, possible ways of improvement of this branch were suggested. From the collected data there have been assessed possible system measures of evacuation with regard to their application in practice.