The Volgodonsk Branch of AEM-technology, part of the mechanical engineering division of Rosatom has started shipping the equipment of the reactor plant for Rooppur Nuclear Power Plant (NPP).
The customer will receive the vessel for the VVER-1200 nuclear reactor and the first two steam generators for the second power unit of Rooppur NPP under construction in Bangladesh.The nuclear reactor was manufactured for two years, the manufacturing process includes 768 operations, including 143 control points.
The plant's specialists carried out the whole range of testing, including hydraulic test of the vessel with the standard cover of the upper unit. During the test, the maximum pressure (24.5 MPa), which is 1.4 times higher than the operating pressure, was created inside the reactor.
The final stage of the equipment manufacturing is test assembly with the internals. The core barrel, core baffle, and the protective tube unit were installed into the reactor vessel in the design position.
The plant's specialists, together with the customer's representatives,
performed the necessary inspection operations. As a result, all geometric parameters, alignment of the components were checked and the quality of the manufactured item was confirmed.
The reactor weighing 320 tons, 12 meters long, and two 340-ton steam generators, 14 meters long, will be brought to the plant's special berth and loaded onto a barge. The equipment will be delivered to Novorossiysk by water, then the item will be sent to Bangladesh by sea. The sea route will be about 14,000 kilometers. Director General of JSC “AEM-technology” Igor Kotov, commenting on the shipment, noted: “Rooppur NPP is the first nuclear facility for Bangladesh, and in the process of work we were very attentive to any questions and requests from our Bengalese partners.It is thanks to the trust and effective interaction with the customers that today, in strict compliance with all the contractual obligations, we are shipping the key equipment for the second unit of the NPP. To date, this is the last shipment of such a volume for Bangladesh, but I am sure that our fruitful cooperation with the representatives of the Republic, which is taking the first steps in the nuclear power industry, will continue in one form or another. ”
Reactor plant manufacturing is a unique high-tech competence that only a few countries in the world possess.
The production facilities of Atommash allow manufacturing up to 4 sets of the equipment per year. It is worth reminding that for two power units of the nuclear power plant in the Republic of Bangladesh, JSC "AEM-technology" has manufactured over 50 types of equipment: reactor pressure vessels, upper unit, core barrel, core baffle, protective tube unit, sets of steam generators, reactor coolant pipelines, reactor coolant pumps and other equipment. In total, over 4,000 tons of equipment will be shipped.
The reactor is a vertical cylindrical body with an elliptical bottom, inside which the core and internals are located. From above, the reactor is hermetically sealed with the cover with the drives of mechanisms and reactor control and protection rods installed on it and the nozzles for leading out cables of the in-core instrumentation detectors.
The cover is fastened to the vessel with the studs. In the upper part of the vessel, there are nozzles for supplying and removing the coolant, as well as the nozzles for emergency supply of the coolant.