Session 25. Oral Presentation for: Improving operational efficiency through condition-based monitoring and Internet of Things (IoT) technologies

Presented on 29 May 2025: Session 25 Woodside Burrup Pty Ltd (‘Woodside’) has operated the world-class Pluto liquefied natural gas (LNG) plants safely and reliably since 2012. This complex facility employs numerous heat exchangers to cool and liquefy natural gas. The heat transfer process is facilitated by large fin fans forcing ambient air through heat exchangers containing rows of hot finned tubes. Fin fans are crucial for the efficacy of this thermodynamic cycle. Hence, minimising their downtime and maintaining them is vital for achieving high production. Woodside developed low-resolution and low-cost wireless Internet of Things (IoT) vibration sensors coupled with advanced analytics techniques, to reduce maintenance costs and increase production efficiency. Data from the sensors, mounted on the rolling elements of fans and motors, detect performance changes and diagnose potential failures, reducing the need for human inspection. IoT technology has been instrumental in facilitating frequent and continuous data collection, enabling predictive maintenance. Shifting from reactive to proactive maintenance yields several benefits, primarily reducing operational costs and enhancing safety standards. This research highlights the successful implementation of minimum covariance determinant model and median absolute deviation for threshold setting to identify abnormal vibrations, with post-processing steps to manage alarm frequency. We demonstrate that the combination of low-cost sensing and high-density data coupled with our novel approach produces high accuracy by correlating real faults. This innovative exploitation of IoT presents profound possibilities to elevate operational efficiency through the strategic use of timeseries data, optimal anomaly detection, reducing potential failures and optimising maintenance. The insights are visualised through an interactive analytics platform, facilitating informed decision-making and enhancing operational effectiveness. To access the Oral Presentation click the link below. To read the full paper click here