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Rosatom Installs Core Melt Localization Device at Unit 3 of Kudankulam Nuclear Plant

Power News - Published on Fri, 06 Dec 2019

Image Source: SteelGuru
The case of the core melt localization device or the so called molten core catcher was installed in the design position under the reactor pit of Unit 3 of the Kudankulam Nuclear Power Plant in Tamil Nadu in India. Core catcher for Kudankulam NPP is a device of new generation adapted for the relevant site conditions and safety requirements, it has improved seismic resistance, hydro-dynamic and shock strength, as well as equipped with flood protection and simplified installation and assembly technology. According to the project, a core melt localization device or a core catcher, is installed at the bottom of the station’s protective shell. It is designed to localize and cool the molten core material in case of a hypothetical accident that could lead to damage to the core. The core catcher allows the integrity of the protective shell to be preserved and thus excludes radioactive emission in the environment, even if the hypothetical accident is serious. The case of the device weighs 147.5 tons. The equipment was lifted to the height of 27 meters above the surface and installed in the design position by means of the tracked crane Liebherr LR11350 which is placed between two nuclear islands.

Except for the case, main components of the core catcher are block-assemblies filled with special non-metallic materials, maintenance platform, cantilever truss and bottom plate.

The main feature of the Kudankulam NPP project is its unique combination of active and passive safety systems that provides maximum resistance against external and internal influences. The passive safety systems are capable of functioning even in the event of a complete loss of power supply. They can provide full safety without the active systems and an operator. The core catcher, one of the elements of the passive safety systems was first installed at China’s Tianwan Nuclear Power Plant of Russian design.

Rosatom is technical consultant and main equipment supplier for the construction of the Kudankulam Nuclear Power Plant.

Source :

Posted By : Rabi Wangkhem on Fri, 06 Dec 2019
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