Abstract
This research aims to analyze and estimate the amount of marine litter which get into seawater intake of PT Trans-Pacific Petrochemical Indonesia (TPPI) Tuban in existing conditions during west monsoon and east monsoon. Ten designs will be simulated to reduce and trap the marine debris entering the seawater intake (SWI). These designs will be tested for their effectiveness in reducing the number of debris entering the SWI using the particle tracking module of MIKE 21 numerical modelling package. The required data in this simulation are wind (speed and direction), wave (significant height, direction and period), the bathymetry of and coastline. Besides, this simulation is conducted based on primary data provided by TPPI Tuban management as the validation data. Based on the simulation results, the amount of marine litter entering SWI in the west monsoon is greater than the east monsoon, which is 349.14 kg/year for west monsoon and 100.84 kg/year for east monsoon. Based on the simulation results using the particle tracking module, it was found that design 5 is the most effective design, with the effectiveness of 73.97%. The biggest accumulation of marine litter using construction design 5 occurred in November, which was 355.36 kg.
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