Search for dissertations about: "Severe nuclear accidents"
Showing result 6 - 10 of 18 swedish dissertations containing the words Severe nuclear accidents.
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6. A Chemical Perspective on the Tellurium Source Term in the Context of Severe Nuclear Power Plant Accidents
Abstract : In the event of a severe nuclear accident, one of the biggest concerns is the release of radioactive nuclides. Typically, the most volatile is likely to be released. One that is considered among the most volatile is tellurium. Additionally, health implications towards the public by tellurium can be by itself or the decay product iodine. READ MORE
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7. CFD Study of Molten Pool Convection in a Reactor Vessel during a Severe Accident
Abstract : During severe accidents in nuclear reactors, the core and internal structures can melt down and relocate into the reactor pressure vessel (RPV) lower head (LH) forming there a stratified molten corium pool. The pool generally consists of superheated oxidic and metallic liquid layers imposing thermo-mechanical loads on the RPV wall. READ MORE
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8. Iodine-Metal Surface Interactions under Severe Accident Conditions in a Nuclear Power Plant
Abstract : In the event of a severe nuclear reactor accident, iodine will be released from the fuel and eventually enter the containment. Radioactive iodine isotopes constitute both an acute and a long-term threat to humans, owing to its half-life and its accumulation in the thyroid gland. READ MORE
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9. Experimental Study on Steam Explosions in Chemical Solutions and Seawater
Abstract : Steam explosions may be encountered in severe accidents of light water reactors (LWRs), which are thermal detonations caused by rapid and intense vaporization of the coolant upon its direct contact with the core melt (corium). Motivated by the interest in understanding and mitigation of severe accident progression, many studies have been conducted to investigate the steam explosion phenomena during severe accidents. READ MORE
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10. Study on Metallic Melt Coolant Interactions and Debris Bed Formation in a Water Pool
Abstract : To assess corium coolability during severe accidents of LWR, significant number of studies have been conducted previously to investigate the characteristics of debris beds formed from FCI due to fragmentation of molten corium and settlement of the fragments in a water pool. However, their focus has been placed on the oxidic component (UO2/ZrO2) of corium, while little attention has been paid to the debris bed formation due to FCI of the metallic component (Zr/Fe) of corium. READ MORE