The Ukrainian group was involved in clearing the aftermath of the nuclear breakdown at the Chernobyl plant in Ukraine twenty five years ago.

The Ukrainian plan, which involves the use of ‘chipped tin’ suggests that to bring the heat processes in the Fukushima-1 reactors under control, it is necessary to ensure a normal cooling mode in the spent fuel pools by pumping water (sea water as a last resort) into them, then changing the type of reactor fuel coolant needs, replacing the water with low-melting and chemically neutral metal, such as tin, which will pull heat away from the fuel rods (molten or damaged) towards the inner walls of the reactor, while continuing to use sea water to cool down its outer walls. The tin 'lake' inside the reactor will then reduce the discharge of heavy fission products and bring ionizing radiation levels down. The chipped tin could be pumped in through steam communications under pressure using cylinders with helium or argon.