16-Inch InVista Tool Case Study: Navigating the Bends
The InVista technology is a light-weight tool that can be hand-carried, lifted and loaded. It performs in low flow/low pressure environments and can navigate 1.0D bends, including back-to-back and mitre bends. It was designed to overcome challenges associated with traditionally difficult-to-inspect and unpiggable pipelines. InVista easily negotiates damaged and restricted pipe with minimum passage and tight, back-to-back bends. The tool can run in low-pressure environments, and its bi-directional capability allows it to be launched and received at the same location, minimizing or eliminating line disruptions.
InVista’s unique design reduces operational risk by minimizing the wear, impact and debris collection that is associated with conventional in-line inspection technologies. The tool provides accurate and repeatable results with its direct high-density UT measurement.
The assessment is comprehensive and includes all line data versus individual flaw locations.
Cost effective and time-efficient
An InVista inspection is cost-effective. Data are collected in a single pass and the combined geometry and metal-loss data provide 100 per cent overlapping coverage. The tool minimizes offline status, as it inspects efficiently and allows real-time operating decisions with its on-site turnaround and rapid data analysis – saving time for the operator. Linear UT sizing minimizes verification digs, improving excavation and repair confidence, and permanent line modifications are not required. In addition, it eliminates demagnetization repairs because UT inspections do not permanently magnetize the pipe.
Benefits of the single-module tool include:
• Lightweight; the tool is handled and transported easily, reducing safety and environmental concerns
• Longer battery life and faster on-board computing for greater axial flaw resolution and increased inspection velocity, providing accurate results and time savings
• Ideal for space-constrained environments such as terminals, refineries and offshore
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