A risk-based inspection planning methodology for integrity management of subsea oil and gas pipelines

ABSTRACT

During the service life of the offshore pipelines, different failure mechanisms like external/internal sheath damage, fatigue damage, or corrosion may arise. Therefore, high operating costs need to be consumed to confirm the fitness of the pipeline system. This research deals with an enhanced Risk-Based Inspection (RBI) methodology to certify the integrity management of the pipeline system, a radical new way of RBI practice is introduced for analysing steel pipeline and flexible pipeline. Case studies are executed to designate and give knowledge of how the technique works in exercise with what outcomes can be discovered. The discoveries present features of uncertainties which may not have been measured when implementing the traditional RBI scheme. The scope of this research is to display that with an efficient technique of execution the RBI practice, the failures of pipeline systems can be monitored and control system to ensures the integrity of the pipeline’s system.

KEYWORDS:

• Risk-based inspection
• steel pipeline
• flexible pipeline
• risk estimation
• inspection planning

Acknowledgements

All materials including pipe samples, collection, analysis and interpretation of data as well as the writing of the manuscript; the decision to submit the manuscript for publication has been arranged and reviewed by ZJU UNIVERSITY.

Disclosure statement

No potential conflict of interest was reported by the author(s).