Author(s)

Ricard Diago Sambuaga, Trika Pitana, Dwi Priyanta and Aleik Nurwahyudi

Corresponding Author

Ricard Diago Sambuaga

ABSTRACT

According to the National Transportation Safety Committee (NTSC), the highest percentage of the accident (2007-March 2017) is fire or explosion (38%). MV. Gili Cat II had been exploded on September 15th, 2016 at Padangbai port, Bali. Therefore, the accident investigation is to investigate what are root causes of this explosion. The investigation was utilizing Apollo Root Cause Analysis methodology. The research shows that the explosion was probably caused by - electrical wiring system, static electricity around the vessel's fuel tank and hull. Purposes of this study are to reanalyse the root cause of the explosions on the ship, to evaluate fuel oil and electrical system of outboard engines according to nonconventional vessel standard (NCVS). In addition, there is no earthing system of the vessel. It strongly indicating the presence of static electricity to reasonably take place. On the other hand, there was evidence showing fuel was spilled when refuelling. Other evidence showed that significant amount of fuel gas flow from leaking fuel line to the compartment below deck. The fuel tank's venting pipe was not following the appropriate standard and using inappropriate materials. Compartments below deck were not gas tight and only using a spot welding on the ship was found. Therefore, the following recommendations related to the Electrical system were proposed as follows: the earthing system should be fitted to prevent the presence of static electricity, the battery should be mounted properly to prevent movement of the battery which caused by the motion of the vessel. Besides, the following recommendations related to the Fuel oil system are material of flexible pipe is using SAE J 30 or equivalent, using an appropriate mechanism to fill the tank and done safely, and fuel tanks should be earthed.

KEYWORDS

Apollo Root Cause Analysis (ARCA), Electrical System, Fuel Oil System, MV Gili Cat II