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
Serbs in Ukraine Serbs in Ukraine There is a community of Serbs in Ukraine (; ), which includes Ukrainian citizens of ethnic Serb descent or Serbian-born people residing in the country. According to the 2001 census, there were 623 citizens in Ukraine that declared Serb ethnicity. It is estimated that the community numbers ca. 1,000 (2012). The 2001 census registered 623 citizens declaring Serb ethnicity (Національність: серби), out of whom 219 had Serbian citizenship, 104 Ukrainian, 218 Russian, 68 other. The Serbian Ministry of Diaspora estimated in 2007 that there was a Serbian diaspora community numbering ca. 15,000 people in Ukraine. This data