The nuclear safety demonstration aims to demonstrate that a Nuclear Facility respects all the requirements specified in standards from safety authorities, which is a key objective for the licensing of a nuclear installation. It requires, firstly, supporting the necessary collaborative work involving various stakeholders. Secondly, it should be able to use a common and shared requirements repository. However, it is still the so-called “classic” working methods that are put forward. Almost all the documents are in written form. Due to the complexity of the Nuclear Facility of interest, it is proposed to move from this document-oriented system engineering to a model-based system engineering approach which would improve the performance, delay, and qualities of the engineering processes. Models would allow a better cognition and sharing without ambiguities of information by the engineering teams. Subject of this paper is a hybrid MBSE/AI approach facilitating collaborative work on nuclear safety demonstration processes.