English：

The management level of nuclear power engineering construction phase is directly related tothe operation safety of nuclear power projects, which in turn affects the energy development and the safetyof public life and property, and its importance is self⁃evident. However, the construction process ofnuclear power project still faces many difficult problems, such as complex engineering environment, lowefficiency of multi⁃disciplinary collaborative design, and insufficient level of informationisation of theconstruction process. These problems may lead to construction quality hazards, which may threaten thelong⁃term safe operation of the nuclear power plant. Based on this, taking BIM technology and platformdevelopment as the basis, an in⁃depth analysis of the key problems in nuclear power project constructionis conducted, a BIM management platform for the construction phase of nuclear power project is built.Combined with the 3D visual interaction function and collaborative workflow of the Web terminal, theintegration of GIS + BIM is realized, and the level of information interaction and management in theconstruction phase of the nuclear power project is improved, so as to provide support for guaranteeing thesafety of nuclear power plant operation.