Reliability Analysis of Pressure Relief Valve
by
Zurhazrin Azureen Binti Zulkifli
Dissertation submitted in partial fulfilment of the requirements for the
Bachelor of Engineering (Hons) (Mechanical Engineering)
SEPTEMBER 2011
Universiti Teknologi PETRONAS Bandar Seri Iskandar
31750 Tronoh Perak Darul Ridzuan
CERTIFICATION OF APPROVAL
Reliability Analysis of Pressure Relief Valve
by
Zurhazrin Azureen Binti Zulkifli
A project dissertation submitted to the Mechanical Engineering Programme
Universiti Teknologi PETRONAS in partial fulfilment of the requirement for the
BACHELOR OF ENGINEERING (Hons) (MECHANICAL ENGINEERING)
Approved by,
(Dr. Ainu! Akmar binti Mokhtar)
UNIVERSITI TEKNOLOGI PETRONAS TRONOH, PERAK
September 2011
CERTIFICATION OF ORIGINALITY
This is to certify that I am responsible for the work submitted in this project, that the original work is my own except as specified in the references and acknowledgements, and that the original work contained herein have not been undertaken or done by unspecified sources or persons.
ZURHAZRIN AZUREEN BINTI ZULKIFLI
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ABSTRACT
Pressure relief valve (PRY) is a reclosing-type pressure relief device. Pressure Relief Devices are used to protect pressurized equipment from exceeding the maximum allowable working pressure. PRD is considered as the "last line of defense" to save human lives and property. Therefore, it is extremely important to perform reliability analysis on pressure relief valve system.
The aim of this study is to assess reliability of pressure relief valve by using proof test data. The reliability analysis will use Weibull models to fit data obtained from available public data approved by the Center for Chemical Process Safety Process Equipment Reliability Database (CCPS PERD). The purpose of this dissertation is to outline research that has been done about the topic and review existing literatures related to the topic. The calculated failure rate of PRV by using Weibull++ is consistent with existing literature.
This dissertation has five chapters: (1) Introduction, (2) Literature Review, (3) Methodology, (4) Results and Discussion, and (5) Conclusion and Recommendation.
The first chapter describes background study, problem statement, objectives, and scope of the study. The second chapter explains previous literatures related to reliability analysis and pressure relief valve system.
The third chapter outlines the methodology used to complete the project. The Gantt chart and required tools for the study are also mentioned. The fourth chapter records the findings of the project and the final chapter concludes this dissertation report.
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ACKNOWLEDGEMENTS
First of all, I would like to express my deepest gratitude to Allah The Mightiest for His blessing and guidance for me in completing this project.
I am heartily thankful to my supervisor, Dr. Ainu! Akmar Mokhtar, whose encouragement, guidance and support from initial to the final level enabled me to develop understanding of the project.
Thousands of appreciations are also extended to my family and friends for their full support, kindness, assistance, guidance and criticisms during the completion of the project.
Lastly, thank you very much to anyone who has assisted me directly or indirectly in making my Final Year Project a success.
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TABLE OF CONTENTS
CERTIFICATIONS. i
ABSTRACT. iii
ACKNOWLEDGEMENTS iv
LIST OF FIGURES . Vll
LIST OF TABLES viii
CHAPTER I: INTRODUCTION 1
1.1 Background of Study . 1
1.2 Problem Statement 3
1.3 Objectives 3
1.4 Scope of Study 4
1.5 Significance of Study . 4
CHAPTER2: LITERATURE REVIEW 5
2.1 Pressure ReliefVa1ve (PRV) . 5
2.1.1 Safety Relief Valve 6
2.1.2 Relief Valve 9
2.1.3 Safety Valve 9
2.2 Proof Test For PRV 10
2.3 Realiability Concept 12
2.4 Life Data Analysis 13
2.5 Quanta! Response Data Analysis 15
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