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Atommash has completed the welding of Steam Generator bottoms for Rooppur NPP


2020-07-16 17:00:00

The Branch of JSC “AEM-technology” “Atommash” in Volgodonsk (a part of machine building subdivision of ROSATOM - “Atomenergomash”) finished the welding of Steam Generator bottoms for Rooppur NPP. This is the final manufacturing stage of Steam Generators.

The red-hot blanks are used to stamp the bottoms with the help of the press. The bottom to Steam Generator vessel welding is performed after feeding the equipment with SG tubes.

The automatic welding of the bottoms is performed under heating at a temperature of 120-190 degrees for 5 days. The welding of two joints uses 700 kg of wire and 900 kg of flux.

After that, the specialists will conduct local heat treatment of welded joints and a full range of quality controls, including hydraulic tests and eddy current test of SG tubes.

The Steam Generator is a heat exchanger, a part of the reactor plant equipment and belongs to the products of the first safety class. The length of the vessel is about 14 meters, the diameter is more than 4 m, and the weight is 350 tons. The equipment of one NPP power unit consists of four steam generators.

The Rooppur NPP is designed and built according to a Russian project. The plant will consist of two power units with a capacity of 1200 MW each with VVER type reactors of generation 3+.

 

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Joint Stock Company “AEM-technology” established in 2007 as a part of JSC “Atomenergomash” - machine building division of ROSATOM state corporation, currently is one of the leading Russian companies in the field of power engineering. It is a part of “Russian Engineering Union”. The company's structure comprises an Engineering Center, staffed with experienced designers and process engineers, as well as two production sites: The Branch of JSC “AEM-technology” “Petrozavodskmash” in Petrozavodsk and the Branch of JSC “AEM-technology” “Atommash” in Volgodonsk.