ABSTRAKSI
Khafidz Choirul Anam, 2019, NIT: 51145123.N, “Analisis kerusakan Inert Gas
System pada saat bongkar minyak mentah di MT. Bull Papua”,Program
Studi Nautika, program diploma IV, Politeknik Ilmu Pelayaran
Semarang, Pembimbing I: Capt. Agus Hadi Purwantomo M.Mar. dan
Pembimbing II: Daryanto S.H., M.M.
Di kapal tanker minyak, bahaya kebakaran dan ledakan, kemungkinan
terjadinya sangat besar, di mana peraturan internasional mensyaratkan bahwa
kapal tanker dengan bobot mati lebih dari 20.000 ton harus dilengkapi dengan
Inert Gas System (IGS) untuk mencegah kebakaran atau ledakan di dalam tangki
muatan. Namun, ketika melakukan pembongkaran, Inert Gas System rusak yang
mengakibatkan proses pembongkaran dilakukan tanpa menggunakan alat tersebut.
Hal ini tentu saja akan menyebabkan keterlambatan dalam melakukan
pembongkaran minyak mentah, para kru kapal dituntut untuk dapat mengatasi
masalah tersebut sehingga pembongkaran akan terus dilaksanakan agar kapal
tidak off hire.
Metode penelitian yang digunakan oleh penulis adalah metode kualitatif
dan menggunakan jenis penelitian deskriptif observasional, sedangkan metode
pengumpulan data yang digunakan adalah metode wawancara, observasi dan studi
pustaka terkait dengan penggunaan dan perawatan Inert Gas System.
Dari hasil penelitian ini, dapat ketahui bagaimana cara mengatasi
kerusakan alat dengan mengurangi discharge rate yang semula kekuatan pompa
hingga 2500 kl/jam kemudian diturunkan menjadi 700-800 kl/jam sehingga tidak
ada penyusutan di tangki muatan sebagai akibat dari kerusakan Inert Gas system.
Katup vakum dari PV valve dan mast riser dibuka secara manual sehingga udara
dapat masuk dan mengganti volume cairan yang dipompa keluar. Selama
pembongkaran dilakukan dengan mengurangi discharge rate, chief engineer dan
masinis melakukan perbaikan pada IG scrubber yang mengalami kerurusakan
pada bagian demister. Setelah IG scrubber diperbaiki dan Inert Gas System dapat
dinyalakan kembali, pembongkaran berjalan seperti sebelumnya dengan
mengembalikan discherge rate awal dan menutup katup vakum pv valve dan mast
riser. Pembongkaran dilakukan sesuai dengan International Safety Guide for Oil
Tankers and Teminals.
ABSTRACT
Khafidz Choirul Anam, 2019, NIT: 51145123.N, “Analisis of Inert Gas System
failure during during crude oil discharging on MT. Bull Papua”,
Nautical department, program of diploma IV, Merchant Marine
Polytechnic Of semarang, Lecture I: Capt. Agus Hadi Purwantomo
M.Mar. and
Lecture II: Daryanto S.H., M.M.
On oil tankers, fire and explosion hazards, the likelihood of occurrence is
very large, for which international regulations require that tankers with a
deadweight of over 20,000 tons must be equipped with an Inert Gas System (IGS)
to prevent fires or explosions in cargo tanks. However, when carrying out the
discharge operation, an Inert Gas System was damaged which resulted in the
execution of the discharge operation carried out without using the tool. This of
course will cause delays in carrying out crude oil dismantling, the crew of the ship
is required to be able to overcome the problem so that the discharge operation will
continue to be carried out so that the ship is not off hire.
The research method used by the author is a qualitative method and uses
a type of observational descriptive research, while the data collection method used
is the method of interview, observation and literature study related to the use and
treatment of IGS.
From the results of this study, it can be seen how to overcome the
damage of the tool by reducing the discharge rate which was originally pump
strength up to 2500 kl/h then reduced to 700-800 kl/h so that there is no shrinkage
in the cargo tank as a result of damage to Inert Gas System. The vacuum valve
from the PV valve and mast riser is opened manually so that air can enter and
replace the volume of liquid pumped out. Overnight the discharge operation was
carried out by reducing the discharge rate, the chief engineer and machinists
carried out repairs to the IG scrubbers which were damaged in the demister
section. After IG scrubbers have been repaired and the IGS can be restarted, the
discharge operation runs as before by restoring the initial discharge rate and
closing the vacuum valve pv valve and mast riser and dismantling is carried out
according to the International Safety Guide for Oil Tankers and Terminals.
