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Serviceability is a quantitative technical analysis based on international norms. It enables owners of hydroelectric developments to estimate the residual life of their installations, any renewal works and maintenance to be undertaken and at what frequency.

This analysis applies in particular to :

  • mechanical parts : pressure pipelines, reinforced pits, valves, turbine and pump wheels, bearings, injectors, etc.
  • civil engineering works : water intakes, sand catching, dams, supply galleries, outlet channels, etc.
  • electrical parts : alternators, exciters, electrical protection, voltage regulators, instrumentation and control systems, transformers

Méthodologie

Serviceability is carried out on the basis of constructive data and on the background of the object to be analysed. Particular attention is paid to :

  • the conception of the works and original calculation notes
  • past exploitation, modifications of exploitation conditions and eventual degradation of components
  • future exploitation and demands on development which are likely to ensue

Serviceability gives an evaluation of the structural integrity of the works based on :

  • mechanical promptings
  • the eventual presence of faults, such as cracks, loss of thickness due to corrosion or usage and damage caused by third parties
  • structural properties of materials used in construction

Finally, the evaluation provides a diagnosis for the owner or the operator, indicating the necessary measures to put into operation to ensure the safety and productivity of his set-up. Depending on the individual case, these measures may be the object of a risk analysis to optimize decision-making.

  • les sollicitations mécaniques
  • la présence éventuelle de défauts, tels que des fissures, des pertes d’épaisseurs dues à la corrosion ou à l’usure et des endommagements causés par des tiers
  • les propriétés structurelles des matériaux utilisés pour la construction

L’analyse fournit finalement un diagnostic indiquant au propriétaire ou à l’exploitant les mesures nécessaires à mettre en oeuvre pour assurer la sécurité et la productivité de son aménagement. Selon les cas, ces mesures peuvent faire l’objet d’une analyse de risques de manière à optimiser la prise de décision.

    Compétences spécifiques

    HYDRO experts possess specialised knowledge of :

    • the workings of hydroelectric plants, irrespective of their size or power
    • materials, mechanical failure and material fatigue
    • computer tools
    • legislation of serviceability norms in force

    Avantages client

    A hydroelectric development manager is able to control inherent exploitation risks better. He can also :

    • ensure safety and sustainability of his plant while minimising operation investments (targeting investigations)
    • receive useful information necessary for decision-making
    • contact a single interlocutor for the whole work

    Publications
    Contact
    HYDRO EXPLOITATION SA
    Rue de l’Industrie 10, 1951 Sion
    HYDRO Exploitation SA
    Rue de l’Industrie 10
    CP 750 - CH-1951 Sion
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