Structural Integrity Assessment

Z-Subsea Ltd. (Z-Subsea) is an ISO 9001 and ISO 14001 accredited independent, Subsea Design and Asset Integrity Management consultancy providing full cycle integrated solutions to oil and gas clients worldwide.

Our full cycle services commence with conceptual definition and continue with detailed design, construction and move into operation up to end of life.

Safe Operation beyond the original design life (life extension) is also of high interest in Z-Subsea. We employ innovative and cost effective approaches inorder to maximise our client's safe operation time and to minimise assets shutdown and downtime.

Technical personnel of Z-Subsea include 3 directors holding PhD degrees and 20 associates covering various disciplines including Fitness for Service Assessments, Materials and Corrosion, Flow Assurance and Process Engineering, Safety and HSE and Pipeline and Riser Analysis.

With offices located in London and Aberdeen, Z-Subsea have the advantage of being close to the operators in the North Sea while its London office acts as an international hub serving global clients.

Z-subsea clients since its establishment in Dec 2011 have been, PetroVietnam Gas(Vietnam), Petro Vietnam Drilling Technology (Vietnam), EnQuest (Malaysia), ADNOC (UAE), Bureau Veritas (BV) UK, DNVGL, PDO (Oman), TAQA (UK), Tullow oil (UK),Peritus International (UK), Neptune Marine Services (Australia), Theon Ltd.(UK), Oman Gas Company (Oman) and Fairlead Maritime (UK). Individual personnel of Z-Subsea have been working for major operators, consultancies and third party verification bodies before establishing Z-Subsea.

Z-Subsea is specialised in the following technical areas with global projects track records available upon request:

  • Subsea Design and Advanced Analysis
  • Risk-Based asset integrity management
  • Engineering Critical Assessment (ECA) toBS7910, DNV ST-F101, API 1104 and API 579-1/ASME FFS-1
  • Fitness for Assessment (FFS) to DNV RP-F101, API 579-1/ASME FFS-1 andASME B31G
  • Material Selection and Corrosion
  • Assessment, modelling and Management
  • Sand Erosion Evaluations
  • Process modelling and Flow assurance

Z-Subseamaterial and integrity engineering manager represents Z-Subsea in the BS7910, fracture,fatigue, material properties sub-committees of the standard.


For more informationabout Z-Subsea Ltd. engineering services please visit our website or contact us on