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The holes are arranged in six rows along the perimeter of the Shell and intended for coolant exit.
There are also 1,344 holes with different diameters at the bottom. They are intended for supports' installation and protect the fuel assemblies from being injected with small mechanical particles.
Rosatom said the next important stage is the installation of the Grid and Support elements.
After the grid and supply elements are installed, the test assembly of Core Barrel with the Baffle and Protective Tube Unit will be carried out.
AEM-technology is part of Atomenergomash, machine building division Russia's state atomic energy corporation- Rosatom.
Atomenergomash is the sole manufacturer and supplier of all equipment for Reactor Compartments and major part of equipment for Turbine Islands in both the units of Rooppur Nuclear Power Plant, said the Rosatom.