Host: The Japan Society of Mechanical Engineers
Name : The 30th International Conference on Nuclear Engineering (ICONE30)
Date : May 21, 2023 - May 26, 2023
Digitalization has the high potential to make decommissioning safer and more cost-effective. IAEA calls digitalization for decommissioning "Digital Decommissioning (DD)" [1][2][3]and conducts the development of DD. The DD proposed by IAEA manages information on decommissioning facilities using the latest IT technology and has BIM （Building Information Management) [4], which innovates the construction industry, as its core function and consists of three parts based on functions. The main part of DD consists mainly of BIM. One of the other two parts is the input part for the data-related decommissioning facility, and another is the output part for information related to decommissioning plan and practice, which is generated and edited by the DD. The information would play a very effective role in explaining to the regulator and promoting understanding among stakeholders.
The reliability of the information is premised on grasping the facts of the decommissioning facilities correctly. The input part for grasping the facts consists of four kinds of data input functions. these are the function of handling legacy data of the facility, the function of 3D data on layout and structure obtained on-site by optical scanning technology, the function of measurements and sampling of radiation dose and radioactivity, and the calculation function of radioactivity distribution in the facility calculated by calculation codes. The individual attributes of the data obtained by each function are closely correlated or the same among the four functions. Accurate and effective data acquisition is possible by effectively using relationships between attributes. Also, to utilize the input data through BIM, it is necessary to clarify the relationship with the BIM[4] record format, which is called IFC (Industry Fundamental Classes) [5].
In this presentation, we would report on the development of both the data record format based on the analysis of the data attributes required by the four input functions, and the data interface based on the investigation and analysis of the relationships between the data attributes, with considering the regulatory framework and operator's management unique to Japan. In addition, we would also report on the extension of IFC to utilize these data in BIM.
