Engineering and Site Works Expertise

Oil & Gas, Harbours and Marine Renewable Energy Industries

Deep Water
Diverless Operations

Equipment Ergonomics and ROV Operations Optimisation...

Classical Offshore
Interventions by Divers

Operating Procedures Optimisation for maximising safety of involved personnel...

Modular Equipment
Mechanical Interface

Up-Front Inspectability and Maintainability Reviews of components and associated ROV running tools...

Equipements permanents
Connectique et outillages spéciaux

Design Review of equipment and associated special equipment for optimising installation works reversibility...

WITS Engineering provides expert engineering applicable to submerged equipment Inspection, Maintenance and Repair. This is applicable to any kind of Subsea equipment such as pipelines, mooring systems, risers /umbilicals and cables, static structures or complexe Electro-Hydraulic or optical systems as well as the associated tie-in and actuation tooling devices.
The design and morphological specificities of the equipment are methodically analysed in details in order to make relevant recommendations to our customers. The overall objective of our expertise is to help our clients in different ways, either if they are designing /providing Subsea equipment to others, if they want to apply their own maintenance policy to internal products or if they are exploiting Subsea assets with a given integrity managment strategy and OPEX optimisation schemes.

WITS Engineering can help you answering some of key questions raising from designing, installing, inspecting and maintaining Subsea equipment:

  • How to deliver reliable, inspectable and operations-friendly equipment (from your own design department or your suppliers/partners)?
  • Which surveillance plan should be implemented during the equipment life to prevent from critical failures?
  • Is an emergency response plan relevant and how to be prepared to recover from a critical failure?

Areas Of Expertise

Installation and Repair Works Engineering

  • Lifting, deployment and installation of subsea structures and components.
  • Underwater connection procedure using specific divers or ROV tooling.
  • Mooring systems installation.
  • Pipeline and riser systems construction, laying and repair
  • Pigging operations and hydrotesting.

Inspection Engineering

  • Inspectability review studies and recommendations for design upgrades and/or dedicated monitoring systems during front end or basic engineering phase (EPCC Contract specifications).
  • Monitoring devices fabrication, Qualification & Testing programme and integration close follow-up.
  • Recommendations for surveillance programmes (inspection & Monitoring Plan), definition of field operations early alarms (key performance indicators), in particular on critical components.
  • Implementation of equipment criticality analysis and definition of risk models for optimizing inspection works : Risk-Based Inspection (RBI).
  • Writing of inspection manuals applicable to the Subsea equipment (including 3D illustrated worksheets and reporting forms…).
  • Preparation of Inspection Campaigns call for tenders.

Integrated Subsea Inspection Services

Preparatory Works:
  • Definition of inspection program in line with Clients and regulation requirements.
  • Detailed Inspection Task List and Site Worksheet Preparation.
  • Tasks Sequence Optimisation and Baseline Schedule Definition.
During Site Operations:
  • Calibration and set-up of ROV /Divers tooling.
  • Inspection Works 'live' reporting and supervision (incl. schedule management).
  • Subsea Video and picture management 'on the go'.
  • Illustrated Daily Reporting.
Back Office Works:
  • Consolidation of Offshore gathered data.
  • Deep /further analyses as required.
  • Close Out Reporting and associated recommendations.
  • Database Consolidation and delivery (under different formats).

Maintenance Engineering

Modular Equipment
  • Maintainability aspects (ROV access & modularity, spare parts recommendations…) during engineering phases.
  • Optimisation of local service contracts to maintain availability of supplier stock management and ROV tooling maintenance during field operations phase.
Permanent Equipments
  • Reviewing of supplier’s installation documentation, analysis of repair scenarios during engineering phases.
  • Defining potential engineering studies (design & installation engineering), spare parts /installation aids and associated recommendations based on well defined selection criteria (repair ability, spare part inter-changeability, spare parts direct and indirect costs to repair mean ratio…) for the field operations phase.

Emergency Response Engineering

  • Performance of failure susceptiblity and severity classifications as well as criticality evaluation of the equipment (from supplied documentation analysis FMECA, RAM).
  • Definition of repair solutions, associated contracting strategies and possible synergies of repair means utilisation based on customers requirements (production availability, local logistic and contract agreement constraints…).
  • Performance of basic and detailed engineering for complete repair package solutions (scope of work, intervention support, cost & schedules, HAZID /HAZOPS definition…).