Nuclear meltdown of fission product radioactivity, by simple convection. The second test, deliberate shut-off of the secondary coolant loop that supplies the generators, caused the primary circuit to undergo the same safe shutdown. This test simulated the case of a water-cooled reactor losing its steam turbine circuit, perhaps by a leak. This is a list of the major reactor failures in which meltdown played a role: The China syndrome (loss-of-coolant accident) is a hypothetical nuclear reactor operations accident characterized by the severe meltdown of the core components of the reactor, which then burn through the containment vessel and the housing building, then
Nuclear Regulatory Commission nation formally asked the NRC to suspend all licensing and other activities at 21 proposed nuclear reactor projects in 15 states until the NRC completed a thorough post-Fukushima nuclear disaster examination: The petitioners asked the NRC to supplement its own investigation by establishing an independent commission comparable to that set up in the wake of the less severe 1979 Three Mile Island accident. The petitioners included Public Citizen, Southern Alliance for Clean Energy, and San Luis Obispo Mothers for Peace. The flooding of Fukushima led to the meltdown of three reactor cores and release of radiation so high that 100,000