DEVELOPMENT OF FAULT TREE ANALYSIS FOR COOLING WATER SYSTEM USING SPREADSHEET

Water is an essential substance in human life. From biological view, water helps us in continuing life on earth. In industrial application, water serves as medium in heat transfer for the industrial plant to survive its operation. Water is being used as it is the most abundant resource on earth. Continuation supply of cooled water throughout the plant’s operation help in maintaining the operational efficiency as equipment usage and functions are highly sensitive to the temperature and pressure of the raw material. Main function of cooling water in an industrial plant is to act as a medium for heat transfer to various raw materials, especially crude oil and processed chemical and petroleum. Failure in delivering ample and continuous amount of cooling water to the industrial plant may lead to more severe problem and total shutdown of the whole plant operation. In analyzing of such failure may happen, analyst use tools and software to find the possible causes and engineers can focus on creating a solution for such causes. By utilizing the spreadsheet, the author develops a template of Fault Tree Analysis, one of the available failure analysis tools complete with common statistical distributions. The author took a sample of Fault Tree Analysis of cooling water system from the Internet as a baseline and developed them using spreadsheet and lastly confirming the calculation using the BlockSim 8 software. The resulting Fault Tree Analysis is highly constricted by the size as increasing number of events in Fault Tree Analysis will change the formula that is already inserted by the author. Nevertheless, the result will serve as a guideline and baseline for future work in this field.