Fault Tree Analysis for over pressurization in high pressure section of Fertilizer plant


Authors : Appil Ora, Dharani Kumar, Nupur Darade.

Volume/Issue : Volume 2 - 2017, Issue 4 - April

Google Scholar : https://goo.gl/pKNzVi

Scribd : https://goo.gl/ks4js4

Thomson Reuters ResearcherID : https://goo.gl/3bkzwv

Hazard Identification is one of the very important tools which need to be carried out in every industry where hazardous process has been carried out. Fertilizer industry is one of the most hazardous industries and there are very critical sections, which possess hazards such as fire, toxic gas release, over pressurization, which may leads to explosion. In order to carry out hazard identification in process industry, fault tree analysis is one of the best tool sto identify the hazards. Fault tree analysis is a technique used to find all the reasons for any undesired top event. In this paper, over pressurization in HP section is taken as a top event in order to find out all the basic and root causes which may lead to such hazardous event. In order to find all out the possible root causes for over pressurization in HP section, there is a need to consider several intermediate events and with the help of different logic gates it is very easy to understand the structural tree including top event, intermediate event and basic events. It is a technique that can have outcomes in both the forms as qualitative and quantitative as well, if probabilities of basic events are known. Even FTA is a very effective technique to take necessary actions in order to prevent it to leads to undesired events; it includes various engineering controls, administrative controls & several other controls. Operator error is one of the main findings of the fault tree analysis which needs to be considered for immediate actions in the form of administrative controls. Intermediate event can be considered as a top event in case separate fault tree is design or fault is carry forwarded. There are different types of logic gates is used & very essential to have a proper knowledge of gates in order to draft fault tree and even to understand the meaning of all logic gates in order to get proper understanding of fault tree.

Keywords : Fault Tree, Top event, Intermediate event, Basic event, logic gates.

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