22.06.2017  The Rostov NPP Information and Public Relations Administration

Hydroelectric tests of the starting power unit No 4 started at Rostov NPP

Hydrotesting of equipment systems and flushing of spray cooling ponds canals has begun at Rostov NPP fourth power unit under construction.

Nuclear power plants with VVER-1000 power units have recycling technical water supply; that is, the technical water there circulates in a closed circle. Circulating systems use three types of coolers; one of them is a spray cooling pond.

Spray ponds are artificial reservoirs with nozzles over them that spray water to be cooled. The air contact surface is substantially developed, since it is equal to the total surfaces of small water drops. As a result, the intensity of evaporative cooling increases.

“Spray cooling ponds are used in the cooling systems of responsible consumers (equipment, including emergency equipment, which water supply break is not allowed in any mode of operation), combining the functions of safety system and normal operation. Hydrotesting of spray cooling ponds is one of the stages of preparation for the power unit physical launch”, said the Capital Projects Deputy Manager of Rostov Nuclear Power Plant Alexey Fedotov.

The power block No. 4 is planned to be launched in 2017.

The Rostov NPP is an affiliate company for Rosenergoatom Concern OJSC. The plant is based at the Tsymlianskoe reservoir shore 13.5 km away from Volgodonsk. The NPP operates VVER-1000 reactors with the installed capacity of 1000 megawatts. The power block No.1 commenced commercial operations in 2001, with the second and the third power blocks to follow in 2010 and on September 17, 2015, respectively. The power block No. 4 is currently under construction.


The Rostov NPP Information and Public Relations Administration.


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