Sökning: "SKB"

Visar resultat 1 - 5 av 24 avhandlingar innehållade ordet SKB.

  1. 1. Investigation and modelling of friction stir welded copper canisters

    Författare :Therese Källgren; Rolf Sandström; Hannu Hänninen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction Stir Welding FSW ; Copper; Welding; Finite Element Method FEM ; SKB; Material flow; Materials science; Teknisk materialvetenskap;

    Sammanfattning : This work has been focused on characterisation of FSW joints, and modelling of the process, both analytically and numerically. The Swedish model for final deposit of nuclear fuel waste is based on copper canisters as a corrosion barrier with an inner pressure holding insert of cast iron. LÄS MER

  3. 2. Från ingenjörskonst till informatörskonst : studier av PR och riskkommunikation

    Författare :Mats Eriksson; Stig Arne Nohrstedt; Larsåke Larsson; Rolf Lidskog; Ragnar Löfstedt; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Public relations; Risk communication; Organisational learning; Nuclear waste; Case studies; SKB; Rohm and Haas; Preem raffinaderi; Scanraff; medie- och kommunikationsvetenskap; Media and communication studies; Medie- och kommunikationsvetenskap; Media and Communication Studies; Medie- och kommunikationsvetenskap;

    Sammanfattning : This thesis discusses the external risk communication of industrial companies. Such risk communication is here viewed as a division of the companies’ PR operations. There are some central weak points in current risk communication research. LÄS MER

  4. 3. Performance based concrete mix-design : aggregate and micro mortar optimization applied on self-compacting concrete containing fly ash

    Författare :Sofia Utsi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : This thesis is dealing with the field of self-compacting concrete (SCC). SCC is supposed to fill the form properly and enclose the reinforcement without any external vibration. The fresh properties of such a concrete are thus essential. SCC was first introduced in Japan in the middle of 1980th. LÄS MER

  5. 4. Demokrati på delegation. Lokaliseringen av det svenska kärnavfallet

    Författare :Hanna Sofia Johansson; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Kärnavfall; Demokrati; Samrådsmöten; Studieresor; Subpolitik; Svensk kärnbränslehantering AB; Gränsarbete;

    Sammanfattning : The present study concerns the siting of Swedish nuclear waste. Four cases are examined: the feasibility studies in Nyköping and Tierp (cases 1 and 2), as well as three public consultation meetings with conservationist and environmental organisations, and two study visits to nuclear facilities in Oskarshamn and Östhammar, which were held during what is called the site-investigation phase (cases 3 and 4). LÄS MER

  7. 5. Friction Stir Welding of Copper Canisters Using Power and Temperature Control

    Författare :Lars Cederqvist; Innovation; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction stir welding; copper; temperature control; PID control;

    Sammanfattning : This thesis presents the development to reliably seal 50 mm thick copper canisters containing the Swedish nuclear waste using friction stir welding. To avoid defects and welding tool fractures, it is important to control the tool temperature within a process window of approximately 790 to 910°C. LÄS MER