At power unit No. 2 of the Kursk NPP-2, accumulator tanks of the second stage of the passive reactor protection system were installed
Rosenergoatom, PUBLISHED 07.12.2022
In the reactor building of power unit No. 2 of the Kursk NPP-2, specialists installed eight accumulator tanks of the passive core flooding system in their regular place.
These accumulator tanks belong to the second of the three stages of the passive part of the emergency core cooling system, the operation of which is based on natural processes that do not require operator intervention and an energy source. Earlier, in June of this year, four accumulator tanks of the first stage of the emergency core cooling system (ECCS) were installed in their regular place.
УThe tanks, which will subsequently be filled with a solution of boric acid, are designed to cool the nuclear reactor core in any emergency situations. The joint sequential operation of the three stages of accumulator tanks ensures the cooling of the reactor core and guarantees the transition of the reactor plant to a safe state in any combination of initiating events,Ф explained Andrey Osharin, first deputy director for construction of new units of the Kursk NPP.
Each accumulator tank of the passive core flooding system is a vessel over 10 meters high, weighing 77 tons and having a volume of 120 cubic meters. Their installation work is particularly complex. The installation was performed by the specialized installation organization Energospetsmontazh, which is part of the Engineering Division of Rosatom. The tanks are installed at a mark of 26.3 meters which is the ceiling of the central hall.
УFor the first time, the installation of the tanks of the passive core flooding system was performed alongside with the sectoral concreting of the 26th mark. Such a combination of works allows reducing the time for approaching the installation of the inner containment dome. It is important that this was a team effort of our subsidiaries: Trest RosSEM and Energospetsmontazh, - said Oleg Shperle, vice president, project director for the construction of the Kursk NPP of JSC ASE.
Installation of the dome of the second power unit will allow proceeding to the adjustment and commissioning of the circular crane (polar), as well as the beginning of the installation of the main technological systems and preparations for the installation of the reactor vessel in its regular place.
The construction of power unit 1 and 2 of the Kursk NPP-2 is performed as part of the federal project "Design and construction of reference power units of nuclear power plants" of the Integrated Program "Development of equipment, technologies and scientific research in the sphere of the use of atomic energy in the Russian Federation for the period up to 2024.
Topics: NPP, Russia, Kursk NPP
AtomExpo-2022: electric propulsion as a new paradigm
Private business is quite capable of doing light things, and a state-owned company should take on complex redevelopments.
423 nuclear units are operating in the world, 57 units are under construction
In 2022, construction started for 7 units, 4 with Chinese reactors and 3 with Russian ones.
WANO announces the winners of the 2022 Nuclear Excellence Awards
WANO presents the awards during each WANO Biennial General Meeting.
Hero of the day
AtomExpo-2022: raw materials for NFC
The secondary sources are already helping to reduce the consumption of natural uranium for the operation of nuclear power plants, but the main breakthrough in the efficiency of uranium use is expected after the widespread introduction of the closed nuclear fuel cycle (NFC).