merged

Analysis of Up-ending Jacket Platform during Installation
Chin Jia Chun
Supervisor: Assoc. Prof. Ir. Dr. Eng Ahmad Fitriadhy
Bachelor of Applied Science (Maritime Technology)
School of Ocean Engineering
Universiti Malaysia Terengganu
Steel-structured Jacket Platforms have been extensively installed in Malaysia offshore
oil and gas fields. Prediction of launching and up-ending process are vital to avoid
accidents during installation of such expensive product. To achieve the objective, the
final year project presents numerical simulation of launching and up-ending of Jacket
Platform in waves using Moses. Two up-ending conditions of Jacket Platform have
been taken into account after its launching and lifting by a crane. Several parameters
such as trim angle of the barge, wavelengths, wave directions and number of hooks
during lifting have been considered in the simulation. The numerical results revealed
that an increase of trim angle had led to an increase in launching speed and tipping
time but the up-ending speed of jacket will become slower. Two hook method can
enhance the stability of the Jacket Platform compare to one hook method. It is
generally conclude that decrease of trim angle can result in slower launching process
but faster and safer up-ending process.
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