The second tier of the inner steel containment has been installed for Unit 3 of the Leningrad 2 nuclear power station on the Gulf of Finland in Russia, state nuclear corporation Rosatom said.

The inner containment is part of the plant’s safety systems and, together with the outer containment, forms a double barrier designed to ensure leak-tightness under all operating conditions and protection against external impacts.

Leningrad 2-3 will be a VVER-1200 pressurised water reactor with a net capacity of 1,150 MW. Construction began in March 2024.