Steam explosion major cause of human fatalities in volcanic eruptions. The 1986 Chernobyl nuclear disaster in Soviet Union was feared to cause major steam explosion (and resulting Europe-wide fallout) upon melting the lava-like nuclear fuel through the reactor's basement towards contact with residue fire-fighting water and groundwater. The threat was averted by frantic tunneling underneath the reactor in order to pump out water and reinforce underlying soil with concrete. When a pressurized container such as the waterside of a steam boiler ruptures, it is always followed by some degree of steam explosion. A common operating temperature and pressure for a marine boiler
Nuclear power in Ukraine Nuclear power in Ukraine Ukraine operates four nuclear power plants with 15 reactors located in Volhynia and South Ukraine. The total installed nuclear power capacity is over 13 GWe, ranking seventh in the world in 2016. Energoatom, a Ukrainian state enterprise, operates all four active nuclear power stations in Ukraine. In 2014, nuclear power supplied 49.4% of Ukraine's electricity production of 168 TWh. Ukraine relies to a large extent on nuclear energy. The largest nuclear power plant in Europe, the Zaporizhzhia Nuclear Power Plant, is located in Ukraine. In 2006, the government planned to build 11 new reactors by the