Architecture of the digital twin for the new safe confinement of the ChnPP

DOI: 10.31673/2412-9070.2022.022226

Abstract

The paper presents the construction of a digital twin architecture for the New Safe Confinement (NSC) of the Chernobyl Nuclear Power Plant (ChNPP), which was built to ensure the protection of people and the surrounding environment from nuclear and radioactive hazards and to provide the opportunity to remove radioactive materials and carry out other measures to transform the «Shelter» facility into an ecological safe system. The need for effective management of thermogasdynamic processes and assessment of the radiation state in the NSC under non-stationary weather conditions requires the availability of specialized information technologies. An analysis of the functionality and structure of the existing integrated management system of the NSC was carried out, and it was proposed to supplement its functionality with visualization and forecasting capabilities through the development of a digital twin, with the help of which it will be possible to effectively solve the tasks of monitoring and forecasting the state of the object and making management decisions, which in general will ensure physical nuclear safety of the facility and radiation safety of personnel. An overview of the main types of digital twins and available approaches to the construction of their architecture was performed, the choice of the architecture of the NSC digital twin was substantiated. Based on the analysis of the characteristics of the NSC as a complex multi-level system, the main requirements for the digital twin were formed and its generalized structure was developed based on them. The proposed architecture of the digital twin is multi-level and built according to the modular principle, which allows it to be flexibly supplemented depending on needs. To develop the components of a digital twin, it is recommended to use a microservice architecture based on secure information transfer protocols. The results of the work can be used in the creation of the software for the digital twin of the ChNPP NSC.

Keywords: digital double; new safe confinement of ChNPP; software architecture.

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