A Water Treatment Case Study for Quantifying Model Performance with Multilevel Flow Modeling

Emil Krabbe Nielsen*, Mads Valentin Bram, Jerome Frutiger, Gürkan Sin, Morten Lind

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Decision support systems are a key focus of research on developing control rooms to aid operators in making reliable decisions, and reducing incidents caused by human errors. For this purpose, models of complex systems can be developed to diagnose causes or consequences for specific alarms. Models applied in safety systems of complex and safety-critical systems require rigorous and reliable model building and testing. Multilevel Flow Modelling is a qualitative and discrete method for diagnosing faults and has previously only been validated by subjective and qualitative means. To ensure reliability during operation, this work aims to synthesize a procedure to measure model performance according to diagnostic requirements. A simple procedure is proposed for validating and evaluating the concept of Multilevel Flow Modelling. For this purpose, expert statements, dynamic process simulations, and pilot plant experiments are used for validation of simple Multilevel Flow Modelling models of a hydrocyclone unit for oil removal from produced water.
Original languageEnglish
JournalNuclear Engineering and Technology
Issue number4
Pages (from-to)532-541
Publication statusPublished - 2018


  • Multilevel Flow Modelling
  • Model Validation
  • Produced Water treatment
  • Fault Diagnosis


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