Design and Testing
Propipe has supplied products for a number of significant projects. In most cases the multi-diameter label is applied where differences in wall thickness create a change in ID of 50mm or more. Propipe has been testing the piggability of pipeline pigs for several years at our dedicated test facility in Hartlepool, UK.
Testing is regularly undertaken at the request of Operators, Installation Contractors, Pre-commissioning companies and Design organisations to confirm the piggability of a pipeline system in various scenarios.
Testing can vary from a simple differential pressure holding test for an isolation pig through to full piggability testing of multi-diameter pipelines including pipeline features such as valves, wye pieces, tees, bends, reduced pipeline sections, etc. Bespoke test rigs are manufactured for each pipeline project. Each test rig is unique and often includes special simulated features such as reduced/oversized pipe section, check valves, bends, wye pieces, tees and other features found in pipelines.
The test rig replicates the pipeline geometry and features as close as is practical to ensure accurate and meaningful test results. In addition to establishing the correct geometry and feature configuration, pipe spools can be internally coated with Polyurethane, wax of varying hardness, oil, etc. to closely simulate the pipeline conditions. From receipt of an order a detailed engineering drawing of the test rig is developed and sent to the Customer for approval prior to commencement of manufacture. Prior to use the test rig is dimensionally verified and hydrotested to ensure safe operations.
Piggability testing provides confidence to the Asset Owner / Operator / Contractor that the chosen pig design will not only pass through the pipeline system but will also do what is expected of it, i.e. flood, clean, gauge, dewater or maintain a pipeline.
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