“It is planned to place reactor vessel of the power unit No 1 of Kursk NPP-2 at its proper location in 2020”, Andrey Petrov, the Head of Rosenergoatom

The reactor vessel of the VVER-TOI power unit No 1 of Kursk NPP-2 is planned to be placed at its proper location in 2020. It was told by the Director General of Rosenergoatom JSC (a part of Rosatom’s Electric Energy Division) Andrey Petrov during the working trip to Kurchatov (Kursk Oblast).

According to A. Petrov, during this and next year the active works on structural construction will be carried out at the construction site. “In the middle of 2020 we are planning to assemble the reactor vessel at its proper location. It is the main event that defines the schedule of the power unit’s construction”, Rosenergoatom Head noted.

On 9 August, 2018 he took part in the ceremonial event that was dedicated to one of the key events of the year – the completion of the first large technological operation. This was the concreting of the bed plate of KuNPP-2 power unit No 1. In order to commemorate this important event A. Petrov, the Kursk Oblast Governor A. Mikhailov, and the President of ASE Group of companies founded the time capsule.

According to the Plant Manager of Kursk NPP Vyacheslav Fedyukin, as the safety provision of the NPP is the fundamental basis of the company’s activity, the construction of replacement plant is carried out with the use of the most advanced technologies. This also refers to the concreting process. Each concrete batch is carefully tested by the laboratory methods before and after concreting. In accordance with the technological processes of the development of strength in concrete, the concrete placing pattern was changed as well (instead of 4 sections applied earlier, the bed plate is divided into 6 concreting sections).

In the construction of the bed plate 16.7 thousand cubic metres of the self-consolidating concrete was poured. It had already been tested during the construction of the new power units of Novovoronezh NPP. Such concrete is able to flow back and consolidate under its own weight without vibration and keep the reliability and uniformity of the mixture.

By the present time at KuNPP-2 construction site the external circuit of the underground part of the power unit No 1 reactor vessel (where the equipment of retaining the reactor core (melt trap) will be located) and technological facilities are formed. Also, the reinforced concrete blocks at the inner and ring walls of the facility are being assembled.

The Generation III+ power units No 1 and No 2 of KuNPP-2 are the pilot power units that are being constructed by the VVER-TOI design (Water-Water Energy Reactor Universal Optimized Digital). This is the new design created by Russian designers (ASE Group of companies, the Engineering Division of Rosatom State Corporation) on the basis of the technological decisions of VVER-1200 design.

The power units of the Generation III+ possess the improved technical and economical characteristics. In comparison with power units of the previous generation (VVER-1000) the unit’s power has been increased by 25% up to 1,255 MW. The lifetime of the main equipment has been increased two times. At the expense of the high automation the personnel number has been reduced by 30-40%. In comparison with other power units of Generation III+ (power units No 1 and No 2 of Novovoronezh NPP (No 2 is under construction) and No 1 and No 2 of Leningrad NPP (No 1 is in the Low Power Testing stage, and No 2 is under construction)) the VVER-TOI design suggests the significant reduction of the construction value, terms and operating costs.

New power units of KuNPP meet the most advanced requirements of the IAEA in the area of safety. A number of the up-to-date safety systems is applied: melt trap of the active core and the system of the afterheat removal passive system that allows to cool the active core during power supply failure at the expense of the natural air circulation. In comparison with the already constructed power units of Generation III+ the VVER-TOI design has a number of the additional safety measures. Thus, the power unit is designed to stand the Magnitude 8-9 earthquake against Magnitude 7 earthquake in the VVER-1200 design.

Back to the list