Design and application of a monitoring system for the floatover installation

Abstract Floatover installation is an effective installation method for topsides of offshore platforms. The floatover operation is very sensitive to the ocean environment conditions, and the motions of the topside are required to be strictly limited within a certain level. The field monitoring is essential to support the installation. This paper presents a comprehensive introduction to the monitoring system developed by Shanghai Jiao Tong University for the jacket platform floatover installations. Four subsystems were designed for the purposes of environment monitoring, motions and position monitoring, deck support unit (DSU) separating monitoring and closed-circuit television (CCTV) monitoring, respectively. Besides, the integrated monitoring system (IMS) for data integration is also introduced. In addition, applications of the monitoring system with respect to a recently implemented floatover installation project in Malaysian waters is presented. The execution plan is introduced in details, and the implementation process for the monitoring system including validation, installation, tests and field operation is presented. Moreover, the field monitoring results are presented and discussed in brief.

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