This is one of the key elements of the passive safety of the NPP. The work was carried out on the dome of the reactor building and became part of preparing the power unit for transition to the pre-start stage.
The system was installed in stages. Deflector, heat exchangers, electromagnetic devices and other elements were installed at the facility – totally about 90 pieces of equipment and civil structures. At the final stage, the specialists installed the air ducts and concreted the floor slabs.
The PHRS is designed to remove heat from the reactor core in case of a complete plant blackout. The system operates due to natural air circulation and does not require external energy sources: air enters the heat exchangers, heats up and is discharged into the atmosphere through air ducts. This solution makes it possible to passively cool the reactor compartment.
The completion of the system installation was one of the key stages in preparing power unit 1 for start-up.
Sergey Gladchenko, Project Manager for Construction of Nuclear Island of Power Units 1 and 4, T2IC:
“Work on the passive heat removal system has become one of the most difficult activities of the current construction phase. The installation required synchronizing the work of a large number of specialists and strict adherence to the production schedule. The team fulfilled the mission in the planned time frame, which allows us to continue the program of preparing the power unit for start-up step by step.”
Information note from TITAN-2 Holding
TITAN-2 Holding (part of ROSATOM State Corporation) is one of the key participants in large-scale nuclear industry projects in Russia and abroad.
The Holding companies perform a full cycle of work: design, construction organization, construction, electric installation, commissioning of facilities.
Today, TITAN-2 is the general contractor of the construction of new power units of the Leningrad, Kola and Smolensk NPPs, participates in implementation of the PDEC “Breakthrough” project in Seversk, as well as in the largest international nuclear projects – Akkuyu NPP in Türkiye, Paks II NPP in Hungary and El-Dabaa NPP in Egypt.
New power units of the Leningrad NPP and the Kursk NPP-2, the Core Shared Research Facility Siberian Circular Photon Source (SKIF) in Novosibirsk, as well as the facilities of Innopolis in Tatarstan are among the projects completed by the Holding. The competencies of TITAN-2 are also in demand in construction of large industrial, research, social and infrastructural facilities.