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- Nuclear_meltdown abstract "A Nuclear meltdown is an informal term for a severe nuclear reactor accident that results in core damage from overheating. The term is not officially defined by the International Atomic Energy Agency or by the U.S. Nuclear Regulatory Commission. However, it has been defined to mean the accidental melting of the core of a nuclear reactor, and is in common usage a reference to the core's either complete or partial collapse. "Core melt accident" and "partial core melt" are the analogous technical terms for a meltdown.A core melt accident occurs when the heat generated by a nuclear reactor exceeds the heat removed by the cooling systems to the point where at least one nuclear fuel element exceeds its melting point. This differs from a fuel element failure, which is not caused by high temperatures. A meltdown may be caused by a loss of coolant, loss of coolant pressure, or low coolant flow rate or be the result of a criticality excursion in which the reactor is operated at a power level that exceeds its design limits. Alternately, in a reactor plant such as the RBMK-1000, an external fire may endanger the core, leading to a meltdown.Once the fuel elements of a reactor begin to melt, the fuel cladding has been breached, and the nuclear fuel (such as uranium, plutonium, or thorium) and fission products (such as cesium-137, krypton-85, or iodine-131) within the fuel elements can leach out into the coolant. Subsequent failures can permit these radioisotopes to breach further layers of containment. Superheated steam and hot metal inside the core can lead to fuel-coolant interactions, hydrogen explosions, or water hammer, any of which could destroy parts of the containment. A meltdown is considered very serious because of the potential for radioactive materials to breach all containment and escape (or be released) into the environment, resulting in radioactive contamination and fallout, and potentially leading to radiation poisoning of people and animals nearby.".
- Nuclear_meltdown thumbnail Fukushima_I_by_Digital_Globe.jpg?width=300.
- Nuclear_meltdown wikiPageExternalLink Nuclear+Accidents+-+Civilian.
- Nuclear_meltdown wikiPageExternalLink part-melt.htm.
- Nuclear_meltdown wikiPageExternalLink feature-world-worst-nuclear-power-disasters-chernobyl.
- Nuclear_meltdown wikiPageID "162498".
- Nuclear_meltdown wikiPageRevisionID "606620493".
- Nuclear_meltdown hasPhotoCollection Nuclear_meltdown.
- Nuclear_meltdown subject Category:Civilian_nuclear_power_accidents.
- Nuclear_meltdown subject Category:Nuclear_reactors.
- Nuclear_meltdown subject Category:Nuclear_safety.
- Nuclear_meltdown comment "A Nuclear meltdown is an informal term for a severe nuclear reactor accident that results in core damage from overheating. The term is not officially defined by the International Atomic Energy Agency or by the U.S. Nuclear Regulatory Commission. However, it has been defined to mean the accidental melting of the core of a nuclear reactor, and is in common usage a reference to the core's either complete or partial collapse.".
- Nuclear_meltdown label "Derretimento nuclear".
- Nuclear_meltdown label "Fusion du cœur d'un réacteur nucléaire".
- Nuclear_meltdown label "Fusión de núcleo".
- Nuclear_meltdown label "Kernschmelze".
- Nuclear_meltdown label "Kernsmelting".
- Nuclear_meltdown label "Meltdown nucleare".
- Nuclear_meltdown label "Nuclear meltdown".
- Nuclear_meltdown label "Stopienie rdzenia reaktora jądrowego".
- Nuclear_meltdown label "Расплавление активной зоны ядерного реактора".
- Nuclear_meltdown label "انصهار نووي".
- Nuclear_meltdown label "堆芯熔毀".
- Nuclear_meltdown label "炉心溶融".
- Nuclear_meltdown sameAs Roztavení_reaktoru.
- Nuclear_meltdown sameAs Kernschmelze.
- Nuclear_meltdown sameAs Πυρηνική_κατάρρευση.
- Nuclear_meltdown sameAs Fusión_de_núcleo.
- Nuclear_meltdown sameAs Fusion_du_cœur_d'un_réacteur_nucléaire.
- Nuclear_meltdown sameAs Kebocoran_nuklir.
- Nuclear_meltdown sameAs Meltdown_nucleare.
- Nuclear_meltdown sameAs 炉心溶融.
- Nuclear_meltdown sameAs 노심_용해.
- Nuclear_meltdown sameAs Kernsmelting.
- Nuclear_meltdown sameAs Stopienie_rdzenia_reaktora_jądrowego.
- Nuclear_meltdown sameAs Derretimento_nuclear.
- Nuclear_meltdown sameAs m.015l3q.
- Nuclear_meltdown sameAs Q105807.
- Nuclear_meltdown sameAs Q105807.
- Nuclear_meltdown wasDerivedFrom Nuclear_meltdown?oldid=606620493.
- Nuclear_meltdown depiction Fukushima_I_by_Digital_Globe.jpg.
- Nuclear_meltdown isPrimaryTopicOf Nuclear_meltdown.