Reliability Analysis of Pressure Relief Valve

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 literature 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.