ANALISIS PENYEBAB KERETAKAN WALL TUBE FURNACE PADA AUXILIARY BOILER DI KAPAL MV. BEL AIR

Abstract

ANDI BAGAS SADEWA, 2025 “Analysis of the Causes of Wall Tube Cracking in the Furnace of the Auxiliary Boiler on Board MV. Bel Air” This study aims to analyse the causes of cracking in the wall tube furnace of the auxiliary boiler on board the MV. Bel Air. The auxiliary boiler is a type of auxiliary machinery that plays a crucial role in supplying steam for various needs, including fuel heating, cargo space heating, and accommodation purposes. However, during its operation on the MV. Bel Air, problems such as cracking in the wall tube furnace were identified, which allowed water to enter the furnace chamber and led to a drop in boiler pressure. The research method employed is descriptive qualitative, using direct observation on board, interviews, literature study, and documentation. The findings indicate that the main factor causing the cracks was incomplete combustion in the burner. As a solution, maintenance and testing of the burner filter were carried out based on the Planned Maintenance System (PMS) to prevent imperfect combustion in the furnace. Further identification revealed poor quality of boiler feedwater. The feedwater was treated using chemical additives such as Condensate Treatment and Alkalinity Control, along with regular testing using a Boiler Water Test Kit. The final solution was welding the cracked section of the wall tube furnace. These measures have proven effective in preventing further cracking of the wall tube furnace in the auxiliary boiler. This study is expected to serve as a reference for marine engineers in making appropriate decisions to address similar issues on board.