Sökning: "Nuclear reactor"

Visar resultat 26 - 30 av 146 uppsatser innehållade orden Nuclear reactor.

  1. 26. Prototyping of an automated cyclic Neutron Activation Analysis setup

    Master-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Cornelius Maurer; [2022]
    Nyckelord :Nuclear Physics; Neutron activation analysis; cyclic-NAA; Physics and Astronomy;

    Sammanfattning : A prototype Neutron Activation Analysis (NAA) setup based on a Deuterium-Tritium (DT) neutron generator is under development at Lund University. It serves as proof-of-principle for NAA based on a Compact Accelerator-driven Neutron Source. LÄS MER

  3. 27. Variabla inloppsstrypningar i kokvattenreaktorer

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad kärnfysik

    Författare :Jonatan Hultin Rosenberg; [2022]
    Nyckelord :kärnkraft; BWR; variabla inloppsstrypningar; härdkylning; bridning; konversion; bränsleekonomi; CPR; torrkokningskvot;

    Sammanfattning : In a nuclear reactor core there are fuel assemblies with different age (i.e. how long the assembly has been in the core) and burnup (i.e. LÄS MER

  4. 28. BWR Reactor Fuel Channel Manufacturing Simulations

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Kalle Norell; [2022]
    Nyckelord :Bending; Boiling water reactor; Fuel channel; FEM; Bockning; Kokvattenreaktor; Höljerör; FEM;

    Sammanfattning : Fuel channels are used to keep the components of a nuclear fuel bundle in place. The fuel channel of a new nuclear fuel which is being developed at Westinghouse has a complex geometry which creates challenges in the manufacturing process. FE simulations were developed of a two-stage forming process of the fuel channel. LÄS MER

  5. 29. Undersökning av ledarkonstruktion vid bränsletest : Teoretisk konceptframtagning av ledarkonstruktion

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Industriell teknik

    Författare :Sebastian Skans; [2022]
    Nyckelord :bränslestavar; critical heat flux; departure from nucleate boiling; kärnkraft; värmeledning;

    Sammanfattning : In nuclear power plants, during operation at high temperatures, there can occur a steam build-up around the fuel rods at an increasing rate. This inhibits the water’s effectivity in removing heat from the rods. When this occurs and reaches a critical point, the temperature in the fuel rods surges, which can lead to them being damaged. LÄS MER

  7. 30. Modelling of liquid leakage with ASTEC in a severe accident of a PWR

    Master-uppsats, KTH/Fysik

    Författare :Thomas Begey; [2022]
    Nyckelord :Nuclear Physics; Modelling; Iodine Chemstry; Nuclear Safety; Kärnfysik; modellering; jodkemi; kärnsäkerhet;

    Sammanfattning : In a nuclear reactor, in case of a severe accident occurs, backup circuits are usedlike SIS and CSS, flooding the reactor with water. This might lead to many liquidleakages outside the reactor containment building. LÄS MER