First concrete poured for turbine building foundation of Unit 3 VVER-1200 at Leningrad NPP Phase II
On September 9, 2026, concrete pouring began for the foundation of the turbine building of Unit 3 VVER-1200 at Leningrad NPP Phase II in Russia. Construction workers have completed the pouring of the central section of the future foundation, with concrete consumption approaching 5,000 cubic meters. This pour is the first stage of construction of the foundation structure for this building. According to the plan, the contractor will use nearly 5,000 tonnes of rebar and more than 20,000 cubic meters of high-strength concrete to build a monolithic foundation slab 2.5 meters high and more than 8,000 square meters in area. The related operations are currently being carried out simultaneously in 7 construction zones. Konstantin Khudyakov, head of the Leningrad NPP project at TITAN-2 Holding (TITAN-2), said that the foundation construction of the turbine building places high demands on concrete quality, pouring technology and curing conditions, especially in the first few days after pouring, when it is necessary to focus on controlling on-site temperature and humidity and preventing mechanical damage. After the concrete reaches design strength, the contractor will, together with the owner, use non-destructive testing methods to inspect the structure, including ultrasonic testing; at the same time, specimens made from the same batch of concrete will also be subjected to compressive tests on a hydraulic press to confirm that the foundation is capable of bearing the loads of walls, floors, piping and large operating equipment.
2026-09-10
