About designing the internal layout grid of the main NPP building

When carrying out the construction and installation works of nuclear power facilities, one of the main stages of geodetic work at a construction site is the creation of a layout grid. The article considers the issue of designing an internal layout grid at the source and installation horizons. It is proposed to use the free stationing method when creating the internal layout grid. A model of the internal circuit in the reactor building was created and accuracy pre-calculation was performed.