Tanker Navigation Simulations
We use navigational simulations to study the shuttle tanker’s: approach, station-keeping, emergency and departure scenarios to/from the FPSO. For the study, the FPSO and shuttle tanker were modelled, tugs selected, and meto-cean conditions applied.
All the simulations were conducted by an active Tanker/Ship captain who controls the simulator directly through a control console replicating actual ship controls.
Several simulation runs are performed. Each run is set up with the met-ocean conditions and the ship’s initial position, speed and course.
At the end of each run, a run report form is completed. The report includes a qualitative grading as to the difficulty of performing each manoeuvre.
Mooring Integrity Assessment
Offshore Nigeria and generally offshore West Africa, the extreme wave climate is dominated by swell generated by storms coming from the Southern Ocean and the south-eastern Atlantic. Wind speed and wave heights are generally low. Brief periods of high winds and locally rough waves are caused by squall lines.
They are massive banks of clouds accompanied by heavy rains and thunder. The squall usually passes in one hour or two with gradually diminishing winds. The predominant waves are long swell that propagates from storms in the Southern Ocean. This swell can have very long periods, and the height is generally higher in the southern winter. A combination of the inclement weather and atmospheric condition will over time cause degradation.
Through our team of engineers and experienced offshore personnel we are able to perform integrity assessments to determine remaining life, review operating conditions, propose new monitoring and inspection programmes in order to ensure that the life of the moorings is extended up to the point where a change-out can be safely performed
Tandem Offload Engineering
We perform feasibility studies and engineering to demonstrate that a tandem offloading system can be retrofitted on the stern of an existing FPSO and determine it is suitability for a VLCC/ULCC shuttle tanker, and that the anchoring system has sufficient capacity to accept the additional loads from it.
The FPSO and shuttle tanker were numerically modelled within the ANSYS-AQWA software package
in the fully laden and normal ballast conditions.
The analyses determine operation windows within which safe connections between tanker and FPSO can happen using the max utilization on the existing mooring chains as the limiting criteria
Offshore Installation Engineering
We perform engineering for the load-out, transport, offshore deployment and installation of systems and structures which includes manifolds, spool/jumpers, umbilicals and risers, pipelines and flowlines in shallow or deep water.
We develop the installation methodologies, carry out preliminary studies to determine the installation aids in advance of mobilization.
We develop the procedures and guidelines specific to the installation assets taking into consideration all safety critical steps in the process.
We facilitate risk assessments and operations reviews to identify and mitigate all risks.
Our installation analysis is used to determine limiting factors and operational windows for the offshore activities
We design and engineer the structures necessary to retrofit a tandem offloading system on an existing FPSO
We carry-out HAZOPs and Constructability reviews to ensure that all brown field aspects are considered and taken into account in the design and lay-out
The design process also reviews the requirements for maintenance, revamp, upgrade and decommissioning. Included in our deliverables are installation, operations and maintenance procedures
We also provide training for the facility operators
Structural Design & Engineering
We engineer cost effective solutions