Installation of primary circuit large-scale equipment completed in reactor building of Akkuyu NPP Unit 2

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Akkuyu Nuclear, PUBLISHED 03.04.2026

The passive core flooding system (PCFS) tanks have been installed in the reactor building of Akkuyu NPP Unit 2 (being built by Rosatom State Corporation).

The system is a part of the nuclear power plant safety components, which function automatically without operator intervention and even in case of electricity supply disconnection.

Eight PCFS tanks have been installed in their designated locations in the Akkuyu NPP Unit 2 reactor building. The complete installation cycle of eight tanks took nine days.

PCFS hydraulic tank is a thick-walled stainless steel vessel weighing 77 tons (96 tons with the support section) with the capacity of 120 cubic meters. During the power unit operation each tank will be filled with boric acid solution. If the pressure in the reactor plant primary circuit drops below certain level, the solution is automatically fed into the core, ensuring reactor cooling.

"The passive core flooding system tanks are the last large components of the reactor plant primary circuit to be installed using the Open Top technology. During the next stage of Unit 2 construction, we will install the sixth tier and the dome of the inner containment. The PCFS is one of numerous NPP protection systems, which, taken together, minimize the possibility of emergency situations even in case of electricity supply disconnection", Akkuyu Nuclear JSC Chief Executive Officer Sergei Butckikh noted.

Topics: Asia, Turkey, NPP Akkuyu

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