The diploma thesis deals with problems of collaboration of the Integrated Rescue System at coordination of its units intervention in larger traffic accidents, to be specific in coach traffic accidents with a bigger number of the injured and the dead. In the thesis two significant traffic accidents and cooperation training of the units of the Integrated Rescue System are compared at intervals of last five years. Following the analysis it is possible to monitor not only the increasing level of technical and material equipment of single units, but also the increasing level of coordination of their activities. The main aim of the thesis is evaluation of the current level of collaboration of the units of the Integrated Rescue System in a larger traffic accident, eventually a proposal of possible adjustment or modification of currently already used type activities of the units of the Integrated Rescue System.

To deal with and prepare for extraordinary events, the Czech Republic has the Integrated Rescue System, which is not an individual organization as such, but rather a system of co-ordinated activities of basic bodies, namely the Fire-Brigade of the Czech Republic and fire prevention units included in the area coverage, the Police of the Czech Republic and the Medical Rescue Service of the Czech Republic. It is the coordination of the Integrated Rescue System{\crq}s basic bodies what is absolutely essential for the effectiveness of the intervention in the place of an extraordinary event. To make the process of rescue and liquidation work really effective, type activities for the basic bodies during a collective intervention have been put together for selected extraordinary events. These activities focus mainly on the co-ordination of the bodies in the place of the extraordinary event as well as the co-ordination of the related bodies by their operations centres. This thesis aimed to analyze the work of the Czech Police as a body of the Integrated Rescue System in the area of extraordinary events as well as to point out possible insufficiencies and propose some ways of improvement. The findings gained can be used in the professional training of individuals, particularly from the ranks of the Czech Police, which handle the question of dealing with extraordinary events. The thesis includes a list of these type activities approved by the Integrated Rescue System{\crq}s bodies with reference to the effective legal documents and the analysis of responsibilities performed by the Police of the Czech Republic within the individual type activities. The conclusion indicates disparities between the theory and the practice, which arose during the elaboration of the thesis, particularly insufficient knowledge of the type activities on behalf of the policemen and deficient material facilities of the Czech Police as an Integrated Rescue System{\crq}s body, mainly protective aids for performing tasks related to potential contamination of the policemen by various chemical, biological and radioactive substances etc.

Population Protection againts Impacts from Major Chemical Accident in recent years is an important area to address. This thesis focuses on the current situation and preventive security measures in protecting the population against the effects of serious chemical accidents. Specifically, it focuses on the Czech Republic and toxic industrial chemicals, explosive and flammable. A detailed analysis of the current situation in the Czech Republic with risk areas relating to chemical industry and hazardous chemicals was worked out. An analysis of the current status of population protection from the effects of serious chemical accidents is prepared. On the basis of the analysis measures are suggested to improve the current situation in accordance with legislation. The work was carried out research on their own knowledge of the population in this in pre-selected location.

The diploma thesis is focused on a detection and a laboratory control of hazardous substances’ leak into the environment. These hazardous substances are classified. Further, it aims to chemical laboratories of the fire-brigade of the Czech Republic, as well as which place they hold in the fire-brigade system, and it indicates their main duties. This diploma thesis contains a review of some essential types of devices and mediums, which are in terms of the fire-brigade of the Czech Republic usable to practice the detection, determination and assessment of the hazardous substances in various figures of the environment in terrain, i.e. filling of duties of the chemical survey. The output of this diploma thesis is simulation of leaks of the toluene diisocyanate using ALOHA software, TerEx software and Rozex Alarm software. Further on, the proposal of another methodical sheet focused on leak actions of the concrete hazardous industrial substance – toluene diisocyanate. This methodical sheet could therefore broaden pro tempore elaborated sheets for chlorine and ammonia.