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Introduction

This example illustrates a dropped object scenario and its recovery modelled using Flexcom. There are numerous hazards associated with the transfer of cargo at offshore locations, posing health and safety risks to both offshore personnel and to equipment.

The model contains a flexible riser arranged in a steep wave configuration, which is connected to an FPSO. A support vessel is docked alongside the FPSO, and is transferring freight containers across to it. At some point during the transfer process, the weight bearing cable snaps, and the container drops from the crane, and sinks down into the ocean.

The second component of this analysis looks at the recovery of this dropped container by performing a dynamic lift using a salvage air bag which is attached to the container and slowly inflated to raise the container from seabed to surface.

Some illustrations from the simulation are presented in the figures below.

System Overview

Cargo Transfer

Container colliding with Riser