To verify the structural integrity of a vessel, hull thickness measurements must be periodically take, with each measurement point documented. GL notes that the number of required measurement points can reach up to 20,000 - all repeatedly measured over the life of the vessel, creating a vast amount of essential data which must be managed and assessed.
Pegasus can be used in the preparation, recording, assessment, storage and reporting of such measurements, with the latest release extending the current hull integrity management package to include combined functionality with the condition monitoring package GL HullManager.
3D models utilised in GL HullManager can be used directly for recording thickness measurements with Pegasus, while thickness measurements recorded with Pegasus can be integrated and used in GL HullManager.
GL says that using these kinds of systems to accumulate an accurate long-term database of thickness measurement results allows more precise scheduling and planning for repairs, as well as predicting future corrosion.
Release 2.0 of Pegasus offers an integrated software solution supporting thickness measurements independent of whether or not a 3D structural model is available. Partially incomplete 3D structural models are also supported by using tabular input for the missing parts.
GL notes that, independent of which method is used, assessments like hot spot lists and statistics as well as reports in IACS format are presented in a unified manner.
In summary, new features in version 2.0 include: integration of 3D model-based and table-based recording of measurements and assessment functionality; a revised navigation panel which gives a better overview of the measurement content and program functionality; and support for table based measurement recording and assessment for bulkers and tankers built according to IACS Common Structural Rules.
First released in 2008, GL Pegasus was introduced for recording thickness measurements on 3D structural models. Two years later, GL Pegasus Lite became a mandatory tool for all GL certified thickness measurement companies, able to handle thickness measurements without requiring a 3D structural model of the vessel.
GL Pegasus and GL Pegasus Lite will now be replaced by the integrated version of Pegasus 2.0.
Pegasus 2.0 is available free of charge. Program licences required to use a structural 3D model are available from GL on request.