Sökning: "BWR"

Visar resultat 1 - 5 av 45 avhandlingar innehållade ordet BWR.

  1. 1. The chemistry of iodine in BWR aqueous systems

    Författare :Rikard Malmbeck; Chalmers tekniska högskola; []
    Nyckelord :reactor water; solvent extraction; characterization; BWR; iodine; mixer-settlers; speciation;

    Sammanfattning : .... LÄS MER

  3. 2. Sensitivity and Uncertainty Analysis of BWR Stability

    Författare :Ivan Gajev; Tomas Lefvert; Paolo Vinai; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; BWR Stability; Sensitivity; Uncertainty; Engineering physics; Teknisk fysik; SRA - Energy; SRA - Energi;

    Sammanfattning : Best Estimate codes are used for licensing, but with conservative assumptions. It is claimed that the uncertainties are covered by the conservatism of the calculation. LÄS MER

  4. 3. Advanced fuels for thermal spectrum reactors

    Författare :Jitka Zakova; Janne Wallenius; Jan-Leen Kloosterman; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; BWR; transmutation; thorium; Pu; MA; Am; Cm; AHTR; thermal; reactor; neutron;

    Sammanfattning : The advanced fuels investigated in this thesis comprise fuels non− conventional in their design/form (TRISO), their composition (high content of plutonium and minor actinides) or their use in a reactor type, in which they have not been used before (e.g. nitride fuel in BWR). LÄS MER

  5. 4. Novel Diagnostics and Computational Methods of Neutron Fluxes in Boiling Water Reactors

    Författare :John Loberg; Michael Österlund; Thomas Smed; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Void; BWR; neutron fluxes; channel bow; MCNP; 2D 3D; Physics; Fysik;

    Sammanfattning : The focus in this thesis is to improve knowledge of the BWR related uncertainties void, channel bow, and control rods. The presence of void determines the moderation of neutrons in BWRs. A high void fraction is less efficient in moderating neutrons than a low one. LÄS MER

  7. 5. Iodine-Metal Surface Interactions under Severe Accident Conditions in a Nuclear Power Plant

    Författare :Henrik Glänneskog; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; containment; reactive metals; BWR; adsorption; iodine; radiolysis;

    Sammanfattning : 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. LÄS MER