Corium (nuclear reactor) Corium (nuclear reactor) Corium (also called fuel containing material (FCM) or lava-like fuel containing material (LFCM)) is the lava-like mixture of fissile material created in a nuclear reactor's core during a nuclear meltdown. It consists of nuclear fuel, fission products, control rods, structural materials from the affected parts of the reactor, products of their chemical reaction with air, water and steam, and, in the event that the reactor vessel is breached, molten concrete from the floor of the reactor room. The heat causing the melting of a reactor may originate from the nuclear chain reaction, but more commonly decay heat
Smolensk Nuclear Power Plant which can prevent release of radioactive material into the environment even in case of serious accident; for example breakage of pipes in the reactor cooling circuit. The reactor cooling circuit is housed in hermetic reinforced concrete boxes that can withstand a force of 4.5 kgf/cm. Smolensk Nuclear Power Plant Smolensk Nuclear Power Plant ( []) is a nuclear power station in Russia. It is located in the Smolensk region, in Desnogorsk province, approximately 100 km from Smolensk, 115 km from Bryansk and 320 km from Moscow. Smolensk Nuclear Power Plant is the biggest nuclear plant in the Nechernozem region of