Good morning, ladies and gentlemen. First, let me introduce myself. My name is Matus Vozar and I’m student of The Department of Inegrated Management Systems at Faculty of Manufacturing Technologies of Technical University in Presov. I’m going to talk today about nuclear power plants and their signification in the world. I would like to divide my presentation into three parts. Firstly, I`ll talk about how we produce electricity and what is its effect on environment. Secondly, I`ll define why are the nuclear power stations needed and finally I`ll describe the safety of the nuclear power plants. If you don’t mind, we’ll leave the questions until the end. As you know, an electricity is a thing without which we can’t realize, we can’t image our usual day. Everybody of us uses it, but we don’t know how difficult, how hard is to produce it.So, if we want to produce the electricity, we must burn a quantity of coal, gas and oil. The exploiting, the burning of it cause the pollution of the atmosphere, and finaly it cause water pollution.