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Safe operation of a merchant vessel is dependent on the reliability of the vessel’s main propulsion engine. Reliability of the main propulsion engine is interdependent on the reliability of several subsystems including lubricating oil system, fuel oil system, cooling water system and scavenge air system. Turbochargers form part of the scavenge sub system and play a vital role in the operation of the main engine. Failure of turbochargers can lead to disastrous consequences and immobilisation of the main engine. Hence due consideration need to be given to the reliability assessment of the scavenge system while assessing the reliability of the main engine. This paper presents integration of Markov model (for constant failure components) and Weibull failure model (for wearing out components) to estimate the reliability of the main propulsion engine. This integrated model will provide more realistic and practical analysis. It will serve as a useful tool to estimate the reliability of the vessel’s main propulsion engine and make efficient and effective maintenance decisions. A case study of turbocharger failure and its impact on the main engine is also discussed.

Item Type:	Refereed Article
Keywords:	reliability assessment, merchant vessel, main engine, turbocharger, failure
Research Division:	Engineering
Research Group:	Maritime engineering
Research Field:	Maritime engineering not elsewhere classified
Objective Division:	Transport
Objective Group:	Other transport
Objective Field:	Other transport not elsewhere classified
UTAS Author:	Anantharaman, M (Dr Mohan Anantharaman)
UTAS Author:	Khan, F (Professor Faisal Khan)
UTAS Author:	Garaniya, V (Associate Professor Vikram Garaniya)
UTAS Author:	Lewarn, B (Professor Barrie Lewarn)
ID Code:	127099
Year Published:	2018
Web of Science® Times Cited:	2
Deposited By:	Seafaring and Maritime Operations
Deposited On:	2018-07-10
Last Modified:	2018-12-14
Downloads:	101 View Download Statistics