Abstract:
This study aims to analyze fuel management efforts in the Composite Boiler to implement
the regulations of MARPOL 73/78 Annex VI regarding the Sulphur Emission Control
Area (SECA), to reduce the sulfur emissions on MT. GAS WIDURI vessel. According to
MARPOL 73/78 Annex VI Regulation 14.4, the sulfur content limit for ships operating
in Sulphur Emission Control Area (SECA) areas cannot be more than 0.10% since 1
st
January 2015. However, during its operations, MT. GAS WIDURI encountered issues
such as fuel sulfur content exceeding the 0.10% limit and a descent in Composite Boiler
performance after switching fuel oil to Low Sulphur Marine Gas Oil (LSMGO). This
study employs a qualitative descriptive method through direct observation onboard,
interviews, literature review, and documentation. The results indicate that the sulfur
content of the Low Sulphur Fuel Oil (LSFO) used onboard was 0.50%, and the descent
in Composite Boiler performance was caused by differences in fuel viscosity and dirt
particle in the Filter Nozzle Burner. As a solution, the fuel was changed to Low Sulphur
Marine Gas Oil (LSMGO) with a sulfur content below 0.10%, and the Filter Nozzle
Burner of the Composite Boiler was cleaned. The fuel switch proved to be an effective
solution for ships operating in Sulphur Emission Control Area (SECA), and cleaning the
Filter Nozzle Burner helped reduce significant pressure drops.This research is expected
to serve as a reference for marine engineers in making decisions regarding to sulfur
emission issues when operating in Sulphur Emission Control Areas (SECA).
