All 163 fuel assemblies were installed and the preparation for the nuclear reaction start has begun.

The event was organized by JSC CONCERN TITAN-2 together with RAOS Project Oy, the supplier of Hanhikivi-1 NPP. 

It includes loading nuclear fuel into the reactor, bringing the reactor to the minimum controlled power level and conducting required physical experiments.

The power unit 2 reactor vessel, weighing more than three hundred tons, was installed at the design location.