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Picture for Robotic Inspection of Non-scrapable Pipelines
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Robotic Inspection of Non-scrapable Pipelines

Product Number: MPWT19-15361
Author: Raymond J. Carswell, Ahmed F. Alrashidi, Maria G. Alfaraj
$0.00

Material deterioration mechanisms are one of the leading causes of pipeline failure, repair and
replacement. Inspection of buried and subsea nonscrapable pipelines is an industry and corporate
technical challenge. Current inline inspection (ILI) practices entail installation of permanent or portable
launchers/receivers to insert and withdraw ILI tools. This typically requires significant modification of
pipelines at the entry and exit points, which are costly, time consuming and in some situations not
possible. New pipeline inspection technologies have been developed for detecting and monitoring
corrosion in non-scrapable pipelines. This paper contains a case study, including validation and
deployment of pipeline inspection robots utilizing two different methodologies including Ultrasonic (UT)
and Saturated Low Frequency Eddy Current (SLOFEC) principles for internal/external inspection and
mapping of nonscrapable pipelines. The robots have advanced capabilities such as self-propulsion and
long tethered cables that avail 10+ Km of travel inside pipelines. The system can be inserted through
openings such as a flange or valve, without the need for launchers/receivers. Pipeline inspection robots
utilize ultrasonic or electromagnetic sensors that provide high inspection sensitivity and accurate
measurement of remaining wall thickness, which is comparable to ILI. Deployment of robotic
technology, and inspection of previously non-inspectable pipelines allows operations to plan repairs
and replacement of pipeline assets. The technology avoid leaks, environmental incidents and helps
ensure reliability and cost-effective operations.