One of France's distinctive features is the standardization of its nuclear power plants: all 56 PWR reactors use the same technology and are technically similar. They are located at 18 nuclear power plant sites, with each plant comprising between 2 and 6 reactors (or “tranche”). Reactors are classified according to their model - known as a “tier” - and the electrical power they deliver: 900 megawatts electrical (MWe), 1300 MWe and 1450 MWe. These reactors were operationalized long before 3D modeling existed. This presentation showcases how EDF are using AVEVA engineering solutions to migrate from 2D modeling to deliver EDF's first fully 3D AVEVA PDMS project.