Passive Heat Removal System Installation at Akkuyu NPP Unit 1 completed

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Akkuyu Nuclear, PUBLISHED 03.05.2026

The installation of passive heat removal system (PHRS) elements has been completed on the dome of the reactor building of Unit 1 of the Akkuyu NPP (under construction by Rosatom State Corporation).

Specialists gradually completed the installation of deflector, heat exchangers, and electromagnetic devices, totaling about 90 components of equipment and building structures. At the final stage of the installation, air ducts were installed on the dome of the reactor building and the PHRS floor slabs were concreted.

"We completed the installation of passive heat removal system structures at Power Unit No.1. This is the result of month well-coordinated work by specialists and a key stage in preparing the Power Unit for launch operations. PHRS is one of the numerous safety systems for modern power units with VVER-1200 type reactors. The system operates through natural physical processes that do not require an electricity source or operator intervention," Akkuyu Nuclear JSC Chief Executive Officer Sergei Butckikh noted.

PHRS is an element of "3+" generation NPPs’ safety systems. At Russian–designed nuclear power plants, the system was first installed at the new power units of the Novovoronezh NPP, the reference nuclear power plant for Akkuyu NPP. One of the main features of modern nuclear power plant projects equipped with VVER reactors is the use of additional, passive safety systems in combination with traditional active systems.

Topics: Asia, Turkey, NPP Akkuyu

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