Sökning: "opportunistic maintenance"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden opportunistic maintenance.

  1. 1. Property Maintenance : Concepts and determinants

    Författare :Henry Muyingo; Hans Lind; Göran Lindahl; KTH; []
    Nyckelord :Housing maintenance; property management; real estate; housing companies;

    Sammanfattning : Introduction Strategic property management aims at balancing the question of how the needed space is to be secured, maintained, increased or disposed of in a cost effective manner under a mixture of decisions and actions. In recent years, the interest in building maintenance has increased as more and more of the housing stock built after the Second World War is in need of major renovation. LÄS MER

  3. 2. Survival Estimation for Opportunistic Maintenance

    Författare :Johan Svensson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; non-stationary renewal process; non-homogeneous Poisson process; survival; optimal maintenance; discretization; points of support; crack growth; discretization;

    Sammanfattning : The problem of rational maintenance of aircraft engines is studied with respect to the influence of random events. Aircraft engines can be more economically maintained and resources can be saved if the maintenance process is improved. LÄS MER

  4. 3. On maintenance management of wind and nuclear power plants

    Författare :Julia Nilsson; Lina Bertling; Ulf Sandberg; KTH; []
    Nyckelord :electrical poduction systems; windpower; nuclear power; maintenance management; RCM; RCAM; LCC; mathematical optimization; opportunistic maintenance;

    Sammanfattning : Electrical production in Sweden today is mainly from nuclear and hydro power. However, there is large increase in renewable energy like wind power and the installed new capacity goals are large. Several electrical production sources are important for the sustainability of the energy system. LÄS MER

  5. 4. On the optimization of opportunistic maintenance activities

    Författare :Adam Wojciechowski; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mixed integer linear programming; stochastic programming; complexity theory; mixed integer linear programming; complexity theory; stochastic programming;

    Sammanfattning : Maintenance is a source of large costs; in the EU the maintenance costs amountto between 4% and 8% of the total sales turnover. Opportunistic maintenance is anattempt to lower the maintenance cost by considering the failure of onecomponent as an opportunity to replace yet non-failed components in order toprevent future failures. LÄS MER

  7. 5. Polyhedral and complexity studies in integer optimization, with applications to maintenance planning and location–routing problems

    Författare :Adam Wojciechowski; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; integer linear programming; complexity theory; polyhedral analysis; stochastic programming; maintenance optimization; Hamiltonian p-median problem; maintenance optimization;

    Sammanfattning : This thesis develops integer linear programming models for and studies the complexity of problems in the areas of maintenance optimization and location–routing. We study how well the polyhedra defined by the linear programming relaxation of themodels approximate the convex hull of the integer feasible solutions. LÄS MER