Petrozavodsk Branch of JSC ‘AEM-technology’, a part of machine-building division of Rosatom State Corporationhas completed assembling the first body of the reactor coolant pump set (RCPS) for under construction Unit 2 of Rooppur Nuclear Power Plant (NPP) in Bangladesh.
Upon completion of assembly and welding operations the item passed heat treatment to relieve residual stresses after welding. Herewith the RCPS body is heated up to temperature exceeding 600 degrees and held for several hours in accordance with guidelines set forth in the process instruction, said a release.After every heat treatment condition all welds are inspected by dye-penetrant testing and subjected to ultrasonic testing. After that the RCPS body will be forwarded to machining. The RCPS body is the first safety class item.
The reactor coolant pump set at nuclear power plant provides coolant circulation in the primary circuit and operates under pressure about 160 MPa and at a temperature 300 °С. The equipment of one power unit reactor plant includes four RCP sets.
Rooppur NPP is being designed and constructed under the Russian project. Designing and construction of the plant is performed by Engineering Division of Rosatom State Corporation. The plant is going to consist of two power units equipped with two VVER-1200 reactors the life cycle of which comprises 60 years with an option to extend the service life for another 20 years. Electricity generation capacity of each unit will be 1200 MW. The company “AEM-technology” manufactures basic equipment of reactor hall for two power units of the plant.