Project Report 1
PROJECT REPORT ON ANALYSIS OF OVER-HEATING OF MARINE DESIGN ENGINE
USING FAULT TREE ANALYSIS
By (Name)
The Name of the Class (Course)
Professor (Tutor)
The Name of the School (University
The Date
Project Report 2
ABSTRACT
In this paper, the analysis of overheating of Marine Engine Design is presented using the
Fault Tree Analysis (FTA) method to find how reliable marine engine overheating is. There are
various uncontrollable factors in an engine such as bad weather conditions, loading state and ship
mobility, it becomes difficult to ascertain the exact probability of failure of systems in the
engine. The FTA set theory is used to counter the possibility of overestimating or under-
estimating the failure probability of both normal and undesired events of the FTA. The failure
rate of the FTA is found by applying the FTA numbers and its operators.
The FTA probability gives the FTA results which are able to compensate when there is the vague
or uncertain probability of engineering errors and basic events. The FTA method analyzes many
things which may not include only the reduction of overheating through the jacket water but also
to measure the importance of basic events that help reduce overheating.
Calculation of the system’s FTA importance has two methods that are proposed to be used
namely the GMIR which stands for Graded Mean Integration Representation and the FTA
probability ranking method.
In this paper, it was found that the cooling of the engine through the jacket water has proved very
reliable when marine design engine is overheating. It is also concluded that the basic events of
the system that increase overheating is the failure of supply air and is treated the most critical
parameter.
Project Report 3
ACKNOWLEDGEMENT
I would like to direct my heartfelt and deepest gratitude to my supervisor, Prof./Dr./ Mr/
Mrs……………………………at the University of …………, for his/her immense knowledge,
excellent guidance, caring, patience and providing me with an outstanding atmosphere for
studying and doing research. I attribute the level of my…………….. Degree to his/her
encouragement and effort and without him/her this project report, would not have been
completed or written. One purely could not wish for a better or friendlier supervisor.
I am also grateful to the staff of the University of ……………, my colleagues and friends, and
one and all, who indirectly or directly, have supported and encouraged me.
Project Report 4
TABLE OF CONTENTS
ABSTRACT ………………………………………………………………………………………………………………………………. 2
ACKNOWLEDGEMENT ………………………………………………………………………………………………………….. 3
TABLE OF CONTENTS …………………………………………………………………………………………………………… 4
LIST OF TABLES …………………………………………………………………………………………………………………….. 6
LIST OF FIGURES …………………………………………………………………………………………………………………… 7
ABBREVIATIONS ……………………………………………………………………………………………………………………. 8
CHAPTER 2 ……………………………………………………………………………………………………………………………. 13
2.0 RESEARCH STUDIES ………………………………………………………………………………………………………. 13
2.1 Background ……………………………………………………………………………………………………………………. 13
CHAPTER 3 ……………………………………………………………………………………………………………………………. 16
3.0 METHODOLOGY …………………………………………………………………………………………………………….. 16
3.1 Introduction ……………………………………………………………………………………………………………………. 16
3.2 Theory of the Fault Tree Analysis …………………………..……………………………………………………….. 16
3.2.1 Events and Gates ………………………………………………………………………………………………………. 17
3.2.2 General Procedure for Fault Tree Analysis ………………………………………………………………… 18
3.2.3 Causes of Overheating in Marine Design Engines ………………………………………………………. 20
3.2.4 Advantages ……………………………………………………………………………………………………………….. 21
3.2.5 Disadvantages …………………………………………………………………………………………………………… 21
3.2.6 Fault Tree Analysis for Marine Design Engine …………………………………………………………… 22
3.2.7 The method of evaluation the Fault Tree failure probabilities: ……………………………………. 22
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3.3 FTA Number ………………………………………………………………………………………………………………….. 24
3.3.1 Calculation of the triangular FTA number ………………………………………………………………… 25
3.3.2 Algebraic operation of FTA number: ………………………………………………………………………… 26
3.4 FTA Operators ……………………………………………………………………………………………………………….. 27
3.5 FTA Importance Measure ……………………………………………………………………………………………….. 28
3.6 Specific Events for FTA for marine diesel engine ……………………………………………………….…….. 29
3.7 Overheating of Marine Design engine using FTA Analyzer software …………………………………. 30
4.0 RESULTS ………………………………………………………………………………………………………………………….. 32
4.1 FTA failure probability of the top event: ………………………………………………………………………….. 32
4.2 Finding the FTA importance measure of basic events ………………………………………………………. 32
4.3 FTA Analyzer Report on Events and Gates ……………………………………………………………………… 34
5.0 DISCUSSION …………………………………………………………………………………………………………………….. 35
6.0 CONCLUSION ………………………………………………………………………………………………………………….. 39
REFERENCES ………………………………………………………………………………………………………………………… 41
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LIST OF TABLES
Table 1: FTA failure probability of basic events ……………………………………………………………………………. 33
Table 2 FTA importance measures the basic events forming the jacket water cooling system of a marine
design engine ……………………………………………………………………………………………………………………………. 36
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LIST OF FIGURES
Figure 1: Fault Tree Analysis on Events and Gates (Huang, Chen and Wang, 2001) ………………………….. 18
