Abstract
The method of the resource estimation of equipment and pipelines of nuclear power plants in probability aspect is described. The method is development of the classical approach of A. Rzhanitsyn to definition of probability of destruction of a design at static loadings. The method allows to consider quality of designs, the equipments and pipelines by criterion of their faultiness, including after carrying out of non-destroying test and repair of the revealed defects. Based on the method developed by one of modules of the computer complex is based on the Maple 12 to carry out the calculation of the probability of destruction, leaks and defects in equipment and pipelines of nuclear power plant, optimization of non-destructive testing and maintenance during operation. There are examples of resource assessment and the probability of destruction of nuclear power plant equipment.