Northern Sea Route. Rosatom’s mechanical engineering division has manufactured the second RITM-400 reactor for the world’s most powerful nuclear icebreaker, Rossiya (Russia). The first such reactor was produced in May of this year. The icebreaker Rossiya will be capable of breaking through four-meter-thick ice, enabling year-round navigation in the eastern sector of the Northern Sea Route. It took three years to make a set of two RITM-400 reactors. The RITM-400 is an evolution of the RITM-200 design, with its thermal power increased to 315 MW, surpassing all existing marine reactors worldwide. “Its design stands out with the position of steam generators inside the reactor pressure vessel, which considerably reduces dimensions and weight of the reactor unit. These are the two most critical parameters in shipbuilding,” says Anton Lebedev, CEO of ZiO Podolsk (part of Rosatom’s mechanical engineering division). This division has already manufactured 12 reactors of the RITM series. Another 14 reactors of the same series are currently in production for the nuclear icebreaker fleet and small-scale nuclear generation projects.