Installation of the core catcher has been completed for Unit 3 of the Leningrad 2 nuclear power station on the Gulf of Finland in Russia, state nuclear corporation Rosatom said.

The core catcher – also known as a core melt localisation device or core trap – is designed to catch the molten core material, or corium, of a nuclear reactor in the event of a nuclear meltdown and to prevent it from escaping the containment.