H. Lazeroms MSc


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(Deze pagina is alleen beschikbaar in het Engels)

Reducing risks in the scoping phase of a power plant turnaround will improve the cost-effectiveness of the installation

Reason of this research is based on the following issues:

  • Essent has set itself high goals due to its ambition to become the Best in Class as a Performing Power Company;
  • literature indicates that the significant part of the lifecycle costs of a power plant occurs during the operational phase of the total lifecycle of an asset;
  • within the operational phase of a power plant the major part of the costs occurs during a turnaround;
  • cost reports of the performed turnarounds indicate systematic exceeding of budgets.

The aim of this dissertation is to provide insight into risks related to the installation, the effect of the risks on operational decision making during the scoping period of a turnaround, and to investigate methods and techniques to reduce the risks during the scoping phase of a power plant turnaround in order to improve the cost effectiveness of the installation.

The research question established is “How can risks during the scoping phase of a power plant turnaround be reduced to improve the cost effectiveness of the installation?”.

During the research sources of risks, related to the power plant installation, were investigated based on the available literature and interviews.
To illustrate the dependencies between source of risks and the turnaround risks, a model has been drawn up.
Based on this model, an operational decision-making tool has been developed. The tool is verified through reports of the 2008 turnaround to ensure that the theoretical model can be used in practice. Based on the categories of the model, research was carried out to find applicable methods and techniques to minimize the risks related to the installation.

It is noticed that risks related to the installation, during the scoping phase, have a negative impact on the cost-effectiveness of the installation with regard to the following:
Costs:

  • Cost inefficiency
  • Work inefficiency

Availability:

  • Additional downtime of the installation.

From interviews with stakeholders a model was drawn up that consists of four categories that reflect the source of the causes that leads to uncertainties. These are:

  • Organization
  • Process
  • Technology
  • information

Per category, literature was consulted in order to find applicable methods and techniques to minimize the possible occurrence of risks during the scoping phase.

As final conclusion is stated that:

  • characteristic of the scoping process is the integral process involving various stakeholders to work together to achieve the scope of work for a turnaround;
  • during the scoping process, there is a palette of dependencies that may affect turnaround risks;
  • using established models and process descriptions, risks can be identified early and can be managed to ensure control;
  • based on the case study of the turnaround of Amer 9 in 2008 there is a potential saving of 19% on a power plant turnaround.

It is recommended to:

  • apply the methods and techniques for all future turnaround projects;
  • investigate the further opportunities that arise.

De Thesis kunt u hier bekijken. (EN)

De Thesis presentatie kunt u hier bekijken. (EN)

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