Sökning: "brännbar absorbator"

Hittade 2 uppsatser innehållade orden brännbar absorbator.

  1. 1. Förbättrade effektmarginaler med radiell anrikningsfördelning för PWR-bränsle

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Mattias Åkerman; [2016]
    Nyckelord :Ringhals 4; PWR; fuel rod; fuel assembly; shielding fuel assembly; reactor core; reactor cycle; burnable absorber; peaking factor; internal peaking factor; enthalpy raise hot channel factor; radial enrichment distribution; enrichment optimization; CASMO; SIMULATE; XIMAGE; Ringhals 4; PWR; bränslestav; bränsleknippe; skärmande knippen; reaktorhärd; reaktorcykel; brännbar absorbator; intern effektformfaktor; radiell effektformfaktor; effektmarginal; radiell anrikningsfördelning; anrikningsoptimering; bränsledesign; härddesign; CASMO; SIMULATE; XIMAGE;

    Sammanfattning : In recent years, the enthalpy raise hot channel factor limit has decreased significantly due to the power upgrade of Ringhals 4 and the use of shielding fuel assemblies. The shielding fuel assemblies task are to reduce the neutron leakage to the reactor vessel and in that way extend the reactor lifetime. LÄS MER

  3. 2. Nuclear Fuel Bundle Design Optimization using a Simplex Method

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

    Författare :Anders Haulin; [2014]
    Nyckelord :Optimization; Simplex; BWR; Fuel Bundle; Nuclear Power.; Physics and Astronomy; Technology and Engineering;

    Sammanfattning : A strategy for nuclear fuel bundle design optimization in boiling water reactors(BWRs), using a simplex method, is presented and examined. The objective of the study is to see how an automatic optimization scheme can create nuclear designs for use in BWR fuel bundles and how the scheme can be improved. LÄS MER