Development of a standardized methodology for performing Quantitative Risk Analysis applied to LPG plants


Gómez Armengol, Bernat

This work is carried out in collaboration with DEKRA and, as detailed below, is based on the need to create a standardized system for performing Quantitative Risk Analysis (QRA) applied to LPG plants. The work consists of two differentiated parts. In the theoretical part, we will proceed to detail and describe how this type of QRA projects are carried out in a more generalized way. Thus, a bibliographical search will be carried out in order to show clearly and step by step how QRA- projects and their different phases are developed. This part of the work will begin by detailing the identification of hazards and how failure cases are defined. At this point, we will proceed to describe the differentiation between isolatable section and initiating event, very important concepts for the realization of a QRA. Next, we will proceed with the description of the frequency analysis and consequence analysis processes.
At this point, the different frequencies associated with the different failures and the possible consequences that are contemplated in a QRA project will be presented. Finally, within the theoretical part, we will proceed with the integration of the risk and the interpretation of the results that can be obtained from a QRA.
In the second part of the work, the experimental block of the work will be carried out, in which it is described how the new standardized process for performing QRA applied to LPG plants has been developed. In this section, it will start again with the identification of hazards and the definition of failure cases and it will be detailed point by point how the process has been standardized, the assumptions that have been made, the support excel tools that have been developed,... This entire section will be supported by the systematic presentation of the realization of a QRA study for an example LPG plant, which presents all those characteristics that are considered as common for this type of plants. Thus, the results obtained will be presented as a proof of the correct development of the new standardized process as well as the testing of the different Excel support tools.



Paredes, Juan Francisco
Serra Hosta, Eduard


IQS SE - Master’s Degree in Chemical Engineering