An optimization model for 3D pipe routing with flexibility constraints

Gleb Belov, Tobias Czauderna, Amel Dzaferovic, Maria Garcia de la Banda, Michael Wybrow, Mark Wallace

    Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

    4 Citations (Scopus)


    Optimizing the layout of the equipment and connecting pipes that form a chemical plant is an important problem, where the aim is to minimize the total cost of the plant while ensuring its safety and correct operation. The complexity of this problem is such that it is still solved manually, taking multiple engineers several years to complete. Most research in this area focuses on the simpler subproblem of placing the equipment, while the approaches that take pipe routing into account are either based on heuristics or do not consider sufficiently realistic scenarios. Our work presents a new model of the pipe routing subproblem that integrates realistic requirements, such as flexibility constraints, and aims for optimality while solving the largest problem instance considered in the literature. The model is being developed in collaboration with Woodside Energy Ltd. for their Liquefied Natural Gas plants, and is implemented in the high-level modeling language MiniZinc. The use of MiniZinc has both reduced the amount of time required to develop the model, and allowed us to easily experiment with different solvers.

    Original languageEnglish
    Title of host publicationPrinciples and Practice of Constraint Programming
    Subtitle of host publication23rd International Conference CP 2017, Melbourne, VIC, Australia, August 28 – September 1, 2017 Proceedings
    EditorsJ. Christopher Beck
    Place of PublicationCham Switzerland
    Number of pages17
    ISBN (Electronic)9783319661582
    ISBN (Print)9783319661575
    Publication statusPublished - 2017
    EventInternational Conference on Principles and Practice of Constraint Programming 2017 - Melbourne, Australia
    Duration: 28 Aug 20171 Sep 2017
    Conference number: 23rd

    Publication series

    NameLecture Notes in Computer Science
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349


    ConferenceInternational Conference on Principles and Practice of Constraint Programming 2017
    Abbreviated titleCP 2017
    OtherThe International Conference on Principles and Practice of Constraint Programming will take place in Melbourne, Australia alongside SAT 2017 and ICLP 2017 from August 28th to September 1st, 2017 which is the week immediately following IJCAI 2017.
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