In this thesis work it is conducted a comparative analysis for Russian standards for reactor steel mentioned in Russian regulations for design of the Nuclear Power Plant. For comparative analysis there is considered the most essential differences, for which detailed explanation is required. However, all minor differences or the same statements are provided in attachments. The key aspects for comparative analysis are methods of tests and approaches. After comparative analysis there is provided a conclusion, if the Russian regulations can be applied in Europe. This thesis work focused on identification of European standards for Russian standards regarding Reactor Pressure Vessel mentioned in the Russian regulations. This thesis work contains the process of identification of the European standards to Russian standards based on the content of the standards. An additional, there is provided the detailed information of standards selection process. There are chosen the standards used for comparative analysis. Most of the standards chosen for comparative analysis related to the mechanical properties of material. The results of this thesis work will be used in the case company for evaluating the acceptability of usage of Russian standards.