Friday, January 22  2021
CDBMB started operational life tests of the reactor coolant pump set GTsNA-1753 - the latest pump model without oil system. These units will be installed in the reactor buildings of the first and second power units of Kursk nuclear power plant (Second stage).
The single-shaft coolant pump GTsNA-1753 is a unique development of CDBMB, having no analogues in the world. The designed water lubrication system of all pump and electric motor units make it possible to completely abandon the use of oil, which significantly increases fire safety of the reactor plant. The exclusion of oil system and the corresponding equipment - oil tanks, oil coolers and oil pumps - leads to a decrease in metal consumption of the set and a decrease in weight by several tons. In addition, the period between repairs for GTsNA-1753 is one and a half times longer than that for the pumps of previous generation.
The pilot prototype GTsNA-1753 was tested in 2015. Later, contracts were signed for supply of the sets to several power units at Russian and foreign nuclear power plants and the set was put into serial production.
“Operational life tests of GTsNA-1753 are performed at CDBMB-2 production facility in Sosnovy Bor. On the stand, the set which is a fragment of a reactor plant, will operate for 5000 hours under conditions that fully correspond to real operating conditions at a nuclear power plant, pumping coolant at temperature up to +300 'C and with pressure up to 200 atmospheres. During the entire period of testing, the operation of the set will be monitored by a computer diagnostics system that continuously records dozens of parameters - vibration levels, temperature of units, etc. “After completion of operational life tests, revisions and acceptance tests, the unit will be ready for acceptance by the Customer,” said Alexander Parkhomenko, CDBMB-2 Director.

Central Design Bureau of Machine Engineering (founded in 1945) is one of the leading organizations of the State Atomic Energy Corporation Rosatom, which has a multidisciplinary design team, its own research, experimental and production facilities. CDBMB is a developer and manufacturer of reactor coolant pumps for VVER reactors. In addition, the company designs and manufactures canned, cantilever, feed and emergency pumps for nuclear power plants and a wide range of remotely controlled equipment for handling radioactive materials. CDBMB also offers engineering solutions in the area of thermal energy, gas and petrochemicals (LNG technologies), shipbuilding and equipment for solid waste processing plants.