TECNOCONSULT has a consolidated experience relevant to sealines and structures installation design activities in very shallow, shallow, deep and ultra-deep water.

Installation design activities are carried out through an extensive evaluation of typology, size and capabilities of foreseen marine spread, expected meteo-marine conditions of the area, potential presence of geohazard or restricted areas, development plans of future and/or already installed offshore systems where the new flowlines and structures have to be integrated.

With reference to subsea field development projects, installation design capabilities include, flexible/rigid flowlines and risers, manifolds and tie-in systems, umbilicals, etc.

The following main analyses are developed by our installation engineering department
 

• Layability analysis of rigid flowlines and sealines (J-lay, S-lay);
• Installability analysis of flexible flowlines, risers and umbilicals with estimation of installation loads in the various scenarios/phases, among which:
  - Initiation from the FPSO;
  - Pulling head over boarding and lowering to depth;
  - Connecting risers/umbilicals to FPSO pull-in winch;
  - Pulling-in up to the Hang-Off point connection;
  - Buoyancy Section installation (if any);
  - Lay away towards the subsea structures and Lay-Down of the End Connector (riser) / UTA (umbilical).
• Static and dynamic installation analysis of rigid pipelines, including:
  - Start-up and laydown
  - Shore pull
  - Normal laying
  - Contingency scenarios (dry and wet buckle)
• Above Water Tie-In analysis
• Pulling heads design (Start-up,  abandonment and contingency heads)
• Lifting analysis of expansion loops, spools, jumpers, risers, supports & structures
• Transportation Analysis
• Pipe stacking
• Seafastening
• Installation vessel mooring analysis
• Subsea structures deployment
• Wet storage study and layout

All the engineering analyses are integrated by:

• Technical Specifications
• Method statements
• Installation manuals
• Onshore yard layout optimization
• Offshore System Integration and ROV ability check study
• Drawings
• Documents for tender assignments.
   

All Transportation and Installation design activities are performed by certified software, able to grant a high structured quality service. Some of the main recognized calculation tools under use are: Ansys Aqwa, OrcaWave, SACS, SESAM, ABAQUS, Orcaflex.