Sökning: "SNF"

Visar resultat 1 - 5 av 16 uppsatser innehållade ordet SNF.

  1. 1. Development of a computational method for determining gamma energy escape from calorimeters at CLAB

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

    Författare :Amela Mehic; [2022]
    Nyckelord :Nuclear physics; Calorimeter; SNF; MCNP; Dose rate; CLAB; Gamma energy; Fuel assembly; Form function; Attenuation coefficient; Gamma spectroscopy;

    Sammanfattning : Swedish Nuclear Fuel and Waste Management Company- SKB has conducted measurement campaigns at the Swedish central interim storage facility for spent nuclear fuel- CLAB over the years, extending from year 2003 to 2019 where the gamma energy escape was acquired. At CLAB the spent nuclear fuel assembly is inserted into the calorimeter; device intended to measure temperature increase due to decay heat from the fuel assembly. LÄS MER

  2. 2. Modeling The Temperature of a Calorimeter at Clab : Considering a Thermodynamic Model of The Temperature Evolution of The Calorimeter System 251

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

    Författare :Johannes Ekman; [2021]
    Nyckelord :calorimetry; calorimeter; System 251; temperature evolution; spent nuclear fuel; SNF; MATLAB; SERPENT2; Clab; nuclear decay heat; calibration measurements; thermodynamic model; gamma escape fraction; mass correction; calibration measurements; electric heater; three component system; system of ordinary differential equations; eigenvalues; eigenvalue estimation; temperature increase method; polynomial approximation of mass correction; sensitivity of mass correction; calorimeter heat capacity; mass correction uncertainty; calorimeter calibration curve; monoenergetic gamma spectrum; curve fitting of temperature as function of time;

    Sammanfattning : It is important to know the heat generated due to nuclear decay in the final repository for spent nuclear fuel. In Sweden, the heating powers generated in spent nuclear fuels are currently measured in the calorimeter System 251 at the Clab facility, Oskarshamn. LÄS MER

  3. 3. Compilation and evaluation of validations of computer codes for spent nuclear fuel – a review

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

    Författare :Staffan Fors; [2019]
    Nyckelord :Nuclear fuel; Kärnbränsle; Slutförvar; Fissionsprodukter; Physics and Astronomy;

    Sammanfattning : This report describes a systematic review regarding validations of calculations by measurements of isotopic compositions, or decay heat, on spent nuclear fuel, SNF. 15 relevant or otherwise interesting studies, were found. Two reports were chosen among the found studies and analyzed. LÄS MER

  4. 4. Norrbottens Bruna Historia : -En fallstudie av nationalsocialismen i Boden och Luleå 1934 - 1946

    Kandidat-uppsats, Luleå tekniska universitet/Samhällsvetenskap

    Författare :Staffan Sandling; [2017]
    Nyckelord :Nationalsocialism Norrbotten Boden Luleå;

    Sammanfattning : Uppsatsens syfte är att studera hur de nationalsocialistiska partierna följde de nationella partiernas riktlinjer på kommunalnivå i Boden och Luleå. Tidsmässigt ligger undersökningen tiden mellan 1934 - 1946. Det var då som de nationalsocialistiska partierna var som störst i Norrbotten. LÄS MER

  5. 5. Genetic analysis of conformation and performance traits in the Swedish New Forest Pony population

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Anaëlle Rahier; [2015]
    Nyckelord :New Forest pony; young pony performance tests; competition; genetic analysis; genetic correlation; heritability; estimated breeding value;

    Sammanfattning : Since its foundation in 1967, the Swedish New Forest Pony Society (SNF) shows interest in breeding for performance in dressage, show jumping, and eventing competitions. The purpose of this study was to carry out genetic analyses on available recordings from young pony performance tests and competitions, in order to evaluate their usefulness in future selection for New Forest breeding ponies. LÄS MER