University of Tasmania
133314-Reliability Assessment of a Main Propulsion Engine Fuel Oil System.pdf (385.67 kB)

Reliability assessment of a main propulsion engine fuel oil system - what are the failure-prone components?

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The main propulsion engine is the heart of a vessel which carries the entire load of the ship and propels to move ahead. The main engine consists of various sub‐systems, the fuel oil system is the most important one. Fuel oil system provides fuel to the engine via a fuel injector mounted on the engine cylinder head. During the voyage, the main engine of a ship encounters a variation in loads and stresses due to rough weather to harsh manoeuvring, which sometimes leads to the breakdown of the main engine. Fuel oil systems are identified as one of the main reasons for engine breakdown. Many accidents happened due to the failure of the main engine fuel oil system in the last two decades. To ensure safe and reliable main propulsion engine operation, it is required to assess the reliability of a fuel oil system. However, there is a significant lack of appropriate data to develop the reliability assessment techniques for fuel oil system. This study proposes appropriate data collection and analysis procedure for the reliability assessment of a fuel oil system. Data related to Failure Running Hours (FRH) of a fuel oil system is collected from 101 experienced marine engineers through a questionnaire. The collected data processed using a box plot and analysed for a normality test. It helps to identify the generalization of the data. Moreover, this study identified failure‐prone components of a fuel oil system. The collected data will help in developing reliability assessment techniques for accurate reliability analysis of a fuel oil system. The identified failure‐prone components will assist in future reliability analysis and risk mitigation strategies for improving the overall safety and reliability of the shipping industry.


Publication title









School of Engineering


Faculty of Navigation, Gdynia Maritime University

Place of publication


Rights statement

Copyright 2019 The Authors. Licensed under Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)

Repository Status

  • Open

Socio-economic Objectives

International sea freight transport (excl. live animals, food products and liquefied gas)