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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.
2
Managing Pipeline Integrity by Touch-Less
Pipeline Inspection
7th Asian Pipeline Conference and Exhibition 2011
Kuala Lumpur, Malaysia
11 -13 October 2011
Presentation outline
3
Objective
Background
Touch-less pipeline inspection
Integrity assessment
Conclusion
OBJECTIVE
To share experience in managing unpiggible
pipeline integrity by using touch-less inspection
method.
4
Many pipelines cannot be
inspected mainly due to low flow
and no launcher/receiver.
Proactive pipeline inspection
could avoid many pipelines
failure.
6
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
11
Samples of Report – Overall Pipeline Route View
Observe the different colors….
Compressor station pipe
CONCLUSION
17
• 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