Pipeline Rehabilitation

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Pipeline Rehabilitation

ROSEN Group

Extending Life

Significant and widespread damage may develop over time, threatening the long-term integrity and safe operation of a pipeline. Replacement of the damaged pipe section is often not economically viable and, in most cases, not actually necessary.

ROSEN’s expertise covers a broad range of integrity disciplines, such as corrosion, coatings, geotechnics, materials, defect assessment, stress analysis, technology qualification, and field intervention. Based on this expertise, our integrity engineering consultancy services enable operators to fully identify the root cause and severity of detected features, and to determine the timing of required actions. Moreover, detailed engineering assessments, thorough cost-benefit analyses, and ultimately the development of comprehensive rehabilitation plans help operators extend the operating life of critical pipelines in a cost-effective manner.

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Corrosion Growth Assessment

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ROSEN Advanced Pipelines Diagnostics with ultrasonic crack detection services.

ROSEN Group

ROSEN Advanced Pipelines Diagnostics with ultrasonic crack detection services.

Exposing Active Threats

ROSEN’s Corrosion Growth Assessment (CGA) identifies the cause and quantifies the rate of corrosion activity in a pipeline. Our expert corrosion engineers analyze the corrosion processes using state-of-the-art methodologies such as flow assurance, and evaluate the credibility of corrosion rates calculated from the inspection data. CGA therefore provides a detailed view of how corrosion has developed over time and significantly increases operators’ confidence in the future integrity of their pipeline.

Our expert corrosion growth service, CGA^pro, is the right choice for a holistic diagnosis of corrosion based on design and operational data, flow assurance models, corrosion modelling software, cathodic protection analysis, coating evaluation, in-line inspection results, and comparisons between inspections. After identifying the causes of corrosion, our experts support operators with recommendations for mitigation, control, and monitoring.

CGA^pro is supported by our Automated Signal Correlation and Normalization process, AutoSCAN. AutoSCAN precisely matches metal loss indications between two axial field magnetic flux leakage (MFL-A) inspections using pattern recognition technology. Historic depth changes are then estimated using the change in signal amplitude and shape. The AutoSCAN output offers unrivalled support to operators, not only highlighting peak activity within a pipeline, but also providing a full and accurate corrosion growth rate distribution, which can be used to estimate the pipeline’s remaining life and support life extension initiatives. Corrosion activity associated with shallow features can be identified, allowing for the early identification of corrosion activity before significant damage is caused.

Tracking corrosion activity with regular repeated CGAs facilitates monitoring of the effectiveness of corrosion mitigation activities.

 

MAOP Validation with RoMat PGS

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PTC2017_romat

ROSEN Group

Given that lifetime extension and zero incidents are increasingly important objectives in the pipeline industry, inline inspection using geometry, MFL and UT technologies have become a long-time standard. Significant enhancements of these technologies over the past several years have helped to improve the understanding of the assets, thereby enabling preventive maintenance and minimizing operational risks. In order to calculate the maximum allowable operating pressure (MAOP) of a pipeline section, ILI technology can furthermore support verification of key parameters such as diameter and wall thickness, and help close gaps in pipeline records. However, for a third critical parameter, material properties, the industry has so far relied primarily on assumptions, since no efficient way of determining this value was available.

Whether on its own or as part of a regular inspection campaign, ROSEN’s new RoMat PGS service can be used to verify a pipeline’s material properties and reliably identify yield strength outliers. This allows for weak links in the pipeline’s integrity assessment to be eliminated and operational safety to be increased.

Based on the inspection results of the RoMat PGS service, ROSEN offers specialized data management, integrity assessment, and engineering services for M(A)OP validation. Accurate information on every single pipe joint allows for meaningful calculations as part of risk assessment programs or fitness-for-service assessments.

With ROSEN’s latest achievements in data integration and non-destructive testing, pipe and material property verification as well as M(A)OP validation can be utilized to acquire precise results based on accurate data.

For more information, click here.