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논문 기본 정보

자료유형
학술저널
저자정보
Jong-hun Im (Korea Maritime & Ocean University) Beom-seok Rho (Korea Institute of Maritime & Fisheries Technology) Sang-deuk Lee (Korea Maritime & Ocean University)
저널정보
한국마린엔지니어링학회 Journal of Advanced Marine Engineering and Technology (JAMET) 한국마린엔지니어링학회지 제48권 제4호
발행연도
2024.8
수록면
186 - 197 (12page)
DOI
10.5916/jamet.2024.48.4.186

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초록· 키워드

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The International Maritime Organization (IMO) has been strengthening regulations to control the air pollution caused by ship propulsion systems and power generators, and promoting CO₂ reduction through enhanced engine efficiency. Consequently, efforts have been directed towards improving the incomplete combustion problem of ship generators as they visibly impact atmospheric pollution and fuel efficiency. This empirical case study highlights the significance of incomplete combustion in ship generators from the perspective that this can also lead to component failures, directly affecting normal ship generator operations. A stable power supply in ships is considered crucial among maritime professionals as disruptions such as blackouts can jeopardize safe navigation, leading to casualties and significant property loss. This study focuses on an incident in which a Very Large Crude Carrier (VLCC) en route from the Far East to the Middle East for oil loading experienced a blackout while transiting through the Singapore Strait, potentially leading to a major accident. Investigations and experiments regarding this incident were conducted in stages. Firstly, similar incidents involving the vessel were examined, and the "Lubricating-oil (LO) Pressure" trend of the generator at the time of blackout was analyzed using its Alarm Monitoring System (AMS), indicating a decrease in LO pressure likely due to carbon deposition within the LO pump relief valve. Subsequent dismantling and inspection of the five components of the LO supply system revealed carbon deposition, which hindered proper LO pressure regulation. Following maintenance, experiments were conducted to measure the LO, cylinder explosion, and chamber pressures at various loads. The results indicated normalized LO pressure, while abnormal readings of cylinder explosion and chamber pressures suggested incomplete combustion; this led to a combustion gas blow-by that disrupted the LO system and caused the blackout. Engine failures pose a significant risk during ship maneuvers, strait transits, and adverse weather navigation, emphasizing the importance of design and operational improvements to address incomplete combustion in engines.

목차

Abstract
1. Introduction
2. Case Study Description
3. Analysis of the Accident Cause
4. Experimental Analysis of the Case Study Incident
5. Conclusion and Recommendations
References

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