Abstract of Papers:-

In 2007, 60% of subsea pipeline in Malaysia are unpiggible and almost impossible to inspect

by commonly available ILI tools. Some of subsea pipeline inspections of unpiggible pipelines

are done by using temporary launcher and auxiliary pumping to run ILI tool, which often

very costly even for simply short pipeline.

This paper is about sharing of PCSB experience in application of touch-less pipeline

inspection tool for unpiggible pipeline and its methodology used for pipeline integrity

assessment.

This paper will also share update on the latest technology development and research

program for touch less inspection for subsea pipeline.

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Managing Pipeline Integrity by Touch-Less

Pipeline Inspection

7th Asian Pipeline Conference and Exhibition 2011

Kuala Lumpur, Malaysia

11 -13 October 2011

Presentation outline

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Objective

Background

Touch-less pipeline inspection

Integrity assessment

Conclusion

OBJECTIVE

To share experience in managing unpiggible

pipeline integrity by using touch-less inspection

method.

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Many pipelines cannot be

inspected mainly due to low flow

and no launcher/receiver.

Proactive pipeline inspection

could avoid many pipelines

failure.

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WHAT IS THE MAJOR CAUSE OF STRUCTURAL FAILURE ??

STRESS !!!Not physical features (except when

they lead to STRESS CONCENTRATION)

Under pressurized environment

Aqua MTM Capsule

TOUCH-LESS PIPELINE INSPECTION BY MTM and AQUA MTM

•Detect local stress level.

•Knowing degree of danger which can lead to structure failures!!!

• The Magnetometer records pipelinemagnetic field strength

•Therefore, any change in the magnetic field

strength indicates the presence of mechanical

stress

Aqua MTM extends the technology envelope of the

conventional onshore MTM to offshore environments

Technical / Operational Benefits :

• Inspection subsea / underwater particularly for non-piggable pipelines

• Uninterrupted pipeline inspection due to its nature being non – intrusive

• High POD and accuracy

• One tool for inspection of all pipelines sizes

ONSHORE

OFFSHORE

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WHAT CAN BE DETECTED?

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WHAT DO YOU GET IN THE REPORT?

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Samples of Report – Overall Pipeline Route View

Observe the different colors….

Compressor station pipe

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ASME 31G – AQUA MTM Correlation.

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MTM F=(A+1)e-Kα/s

α = In (P/Po)

(To-T)

ASME 31G

Pressure testing cycles for ASME 31G – AQUA MTM

correlation

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CONCLUSION

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• The benefit of the use of AQUA MTM for subsea unpiggible pipeline is very significant.

• No special preparation is required (no pipe cleaning, no launcher/receiver, no excavation and no disruption on products delivery).

• High POD and accuracy

• One tool for inspection of all pipelines sizes

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THANK YOU