
 A Digital Twin has been developed for the Glen Lyon FPSO to maintain vessel integrity and ensure operation within the allowable design limits. At the core of this Digital Twin are two components: the Integrated Marine Monitoring System (IMMS) installed on the FPSO, and BMT DEEP, a cloud-based platform that stores, manages, integrates, post-processes and displays the vast data sets collected by the IMMS as well as other data sources. This paper focuses on harnessing the benefits of Digital Twin Technology, by bringing in data from all sources and enabling to synthesize and monitor the FPSO in near real-time from any remote location. This Digital Twin is designed to allow rapid query of the data by filtering with any time window in terms of hour, day, month, quarter, and year of data collection for the life of the asset.
 Several sensors feed data to the Glen Lyon IMMS. The sensors include FPSO motion, stress response monitoring, and metocean monitoring. In addition to the FPSO based measurements, metocean data is also available from Met Office weather buoy K7, and wind measurements from the nearby Clair platform. A composite of the measured metocean parameters is generated from the quality control of the data. This quality-controlled data is visualized on DEEP as a time series, as well as comparisons with the basis of design data for the facility in terms of several statistical charts that form the metocean and structural dashboards. Some key insights and findings from these comparisons are presented.

Generating a Digital Twin of the Glen Lyon FPSO


 This paper presents the continuing developments of the Glen Lyon FPSO Digital Twin. The objective of the Glen Lyon Digital Twin has always been to monitor and inform structural barrier health and verify operation within the allowable design limits. A detailed vessel motion response and loads monitoring is being undertaken to keep track of the fatigue life consumption of the hull structure, and to take mitigating actions as needed to maintain integrity. The structural response monitoring system onboard is contained within the vessel’s Integrated Marine Monitoring System (IMMS), which consists of various sensors, including accelerometers and strain gauges. The measurements from these are accessed and post-processed through BMT DEEP, harnessing the benefits of Digital Twin Technology, by bringing in data from all sources and enabling to synthesize and monitor the FPSO response in near real-time from any remote location.
 The structural dashboard monitors the vessel dynamic stability, relative environment headings, and vessel offsets, through several statistical distribution charts. The hull girder bending moments are continuously monitored through deflections measured by the deck strain gauges. Also, the vessel fatigue damage is computed from the deck strain gauge measurements. Apart from these, the vessel motion responses like relative wave elevations and vertical accelerations at the turret center, are being utilized to help monitor vessel fatigue life consumption by comparison with established fatigue curves using these parameters. Comparisons are made with the predicted fatigue damage rates during the vessel design. Some key insights and findings from these comparisons are presented. The challenges faced in this process are highlighted, along with the steps taken to overcome those.

Developments of the Glen Lyon FPSO Digital Twin: Vessel Response and Structural Monitoring

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Generating a Digital Twin of the Glen Lyon FPSO

Developments of the Glen Lyon FPSO Digital Twin: Vessel Response and Structural Monitoring