CDBMB (a part of Atomenergomash, the machine-building division of the State Corporation Rosatom) have completed rig testing of the reactor coolant pump GTsNA-1391 (removable part) at production site in Sosnovy Bor (Leningrad Oblast).
Tests of four removable parts of the reactor coolant pump (RCP) intended for Power Unit 1 of The Rooppur NPP were run from December through March. The unique test rig, representing a part of reactor plant, allows testing of pump performance parameters before its shipment to the NPP site.
According to Andrey Markevich, head of pump testing laboratory, about 90 operational characteristics of the pump and auxiliary equipment were tested. “Computerized test rig can monitor vibrations of all assembly units, temperature of working fluids and bearing assemblies, water and oil consumption rates, pressure drop, and other parameters. As of today, we have tested the fourth removable part of the pump for the Rooppur NPP and are now preparing it for acceptance inspection. On completion of acceptance and preservation, the part will be delivered to the customer in a special-purpose container to protect the removable part from mechanical damage and adverse weather conditions”, – laboratory head said.
Reactor coolant pumps are an important integral part of the reactor plant: they provide intensive coolant circulation in the reactor primary circuit. Safety of any nuclear power plant depends on uninterrupted operation of these units.
CDBMB is the only designer and manufacturer of RCPs for water-moderated water-cooled power reactors (VVER) in Russia.
CDBMB also designs and manufactures leak-free, overhung, feedwater, and emergency feed pumps for NPPs and a wide range of remotely operated equipment for radioactive materials handling.
CDBMB perform regular deliveries of spare parts, and offer engineering and process-related support to their customers, providing service maintenance of NPP equipment in Russia and overseas.