Sökning: "ringhals"

Visar resultat 1 - 5 av 17 avhandlingar innehållade ordet ringhals.

  1. 1. On-line monitoring of thermal margins at Ringhals 2

    Författare :Tell Andersson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; movable detectors; DNB-margin; core monitoring; power peaking factors; SCPORPIO on-line core simulator; gamma thermometers; power distribution; fixed in-core detectors; nuclear instrumentation;

    Sammanfattning : .... LÄS MER

  3. 2. En tillämpning av expertsystemteknik för övervakning av mellanöverhettare på Ringhals

    Författare :Kjell Ringdahl; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  4. 3. Development and Applications of a General Coupled Thermal-hydraulic/Neutronic Model for the

    Författare :Mathias Stålek; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reactor transients; measurements; thermal-hydraulics; core calculations; coupled calculations;

    Sammanfattning : Coupled calculations are important for the simulation of nuclear power plants when there is a strongfeedback between the neutron kineticsand the thermal-hydraulics. A general coupled model of the Ringhals-3 Pressurized Water Reactor has beendeveloped for this purpose. LÄS MER

  5. 4. Wavelet and Spectral Analysis of Some Selected Problems in Reactor Diagnostics

    Författare :Carl Sunde; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; core-barrel vibrations; two-phase flow; noise diagnostics; wavelet analysis; detector tube impacting;

    Sammanfattning : Both spectral and wavelet analysis were successfully used in various diagnostic problems involving non-stationary core processes in nuclear power reactors. Three different problems were treated: two-phase flow identification, detector tube impacting and core-barrel vibrations. LÄS MER

  7. 5. Effects of Irradiation and Thermal Ageing on the Nanoscale Chemistry of Steel Welds

    Författare :Kristina Lindgren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; spinodal decomposition; thermal ageing; low alloy steel; reactor pressure vessel; irradiation damage; atom probe tomography; core barrel; clustering;

    Sammanfattning : Structural materials of nuclear power plants degrade during operation due to thermal ageing and irradiation from the reactor core. Effects on the materials are an increase in hardness and tensile strength, and a decrease in ductility and fracture toughness, i. e. embrittlement. LÄS MER