Products and Services
Reactor coolant pump set
Reactor coolant pump sets (RCPS) is an essential and integral part of the reactor plant. RCPS provides intensive circulation of coolant in the reactor primary circuit. NPP safety operation is directly related to reliable and continuous operation of RCPS.
"Central Design Bureau of Machine Building" is the only designer and manufacturer of reactor coolant pump sets for water-cooled power reactors (VVER-type) in Russia. Many years of experience of engineers, design engineers and test engineers of JSC "CDBMB" have allowed to develop pump sets that fulfil international standards of nuclear power industry. Reactor coolant pump sets of JSC "CDBMB" have been successfully applied at NPPs in Russia and foreign countries. RCPS design is constantly being improved that leads to a positive impact on the effectiveness of NPP reactor plant.
Reactor coolant pumps of the third generation: GCNA-1391 and GCNA-1713 types
Upon developing RCPS of these types, technical solutions verified by long-term operation experience of the pump of GCN-195 type were applied along with the number of new solutions which provide for compliance with the requirements imposed to key equipment of NPP of the third generation. In particular, spherical casing of flow part of the pump, water cooling and lubrication of radial bearings and axial bearing were applied that allowed to refuse from extensive oil system in the reactor building and replace it with individual lubricating system of motor bearings which is placed directly at RCPS.
Reactor coolant pumps of the fourth generation: GCNA-1753 type
The feature of GCNA-1753 design is the single shaft. The shafts of removable part and motor are connected by the use of flexible coupling to provide rigid connection. This allowed to refuse from separate radial-axial bearings for motor and removable part of the pump and to apply the design with the single radial-axial bearing installed in the motor. Full integration of water-cooled and lubricated bearings allowed to refuse from oil system and to increase fire safety of reactor plant.
