On the accident analysis in a nuclear power plant

For every nuclear power plant the safety analysis is required. On part of it is concerned with the accident analysis. In this deterministic analysis a number of events is supposed to occur - from minor important ones to the catastrophic accidents. Answers are obtained using models and by solving the related mathematical expressions. The usual answer is the excursion of the important parameters of nuclear power plant as a function of time. In this paper the methodology of this analysis is discussed, the number of necessary models is estimated and the approach to this subject for a small country is suggested