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.
Akkuyu NPP is the first nuclear power plant being built in the Republic of Türkiye. Akkuyu NPP project includes four power units equipped with Generation 3+ VVER reactors of Russian design. The capacity of each power unit will be 1200 MW. Akkuyu NPP is the first project in the global nuclear industry being implemented according to the Build-Own-Operate model.
