Pipeline Integrity Management

Safe and cost efficient operation of flexible pipes. 4Subsea provides dedicated high-level expertise helping our clients achieve reliable operation of flexible pipelines. Our goal is to enable full service life with acceptable risk management strategies, and safe and cost effective operation without any incidents or shutdown.

Pipeline integrity management


Typical Challenges for Operators


Do any of these apply to your subsea operations?

  • You have experienced “negative surprises” related to your flexible risers
  • You want to avoid riser replacements
  • You need to maintain production and reduce operational costs
  • You want have access to an expert environment 24/7
  • You need to maximise lifetime of your assets


From concept level through end-of-life we provide on- and offshore services related to assessing system failure drivers and modes, associated risk level assessment and developing integrity management strategies. Furthermore, 4Subsea provides continuous integrity management support, including ITR activities, to monitor the current condition of the flexibles. An online Integrity Management portal ensures that updated information and system status are always available for the client.


Key Deliverables

  • Advanced Integrity Management strategies and support
  • A comprehensive, cost effective service package
  • Both offshore and onshore services
  • Concept to end-of-life range of service
  • Digitised solution with online Integrity Management portal


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Research and Development

  • Failure investigation of flexible pipes
  • Handbook on flexible pipes
  • Joint industry projects


Offshore Work

  • Annulus volume testing
  • Leak detection
  • Outer sheath repair
  • Re-establishment of annulus vent (topside and subsea)
  • Project specific repair and monitoring solutions


Condition Monitoring

  • Establishment of integrity and monitoring programs
  • Evaluation of operational data
  • Annulus vent gas monitoring
  • Advanced PA11 ageing evaluation
  • Life extension
  • Failure mode investigation
  • Risk assessment

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