The main WWER 1000 MW production unit of the Temelin nuclear power plant

The main production unit consists of the reactor building, the engine room, the heat exchange plant, diesel generator stations and of the related infrastructures. The foundation slab under the reactor building is of a size of 68.2x68.2x2.4 m. The controlled areas are provided with washable epoxy paints. The floors of the technological boxes are covered with carbon steel for stainless steel sheets. The main entrance to the reactor building consists of a hermetic transport corridor that will be used for fuel charging. A boron tank, some technological boxes and the computer and control room are built below the hermetic ceiling. The actual hermetic containment consists of a prestressed reinforced concrete structure with an inner steel lining. The inner diameter is 45 m, the height 38 m and wall thickness 1.2 m. The walls consist of cells of reinforced concrete and of steel. The process of assembly is briefly described. The engine room is a steel hall 42x128 m in size and 42.3 m in height, housing a turbine generator. The poor quality of the Soviet project design documentation is criticised. (M.D.)