Developement and Implementation of Criticality Analysis Tool for Spare Parts of Fluidized Bed Boiler
Rinkinen, Pyry Antero
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Leijupetikattilan varaosien kriittisyysanalyysityökalun kehitys ja implementointi
The main objectives of this Master’s Thesis was to develop a criticality analysis tool to classify spare parts of the fluidized bed boiler according their criticality and implement the CA-tool into the Service department of the case company. The spare part packages assure the availability of an installation during the guarantee time. This Thesis was made in order to gather required information to divide the spare part package into lean availability guarantee package (sold on the side of the boiler sales project) and into more profitable extended package (sold as aftersales). The research answered to the questions: How to create an accurate and an efficient criticality analysis tool, which factors the tool should include and which type of parameters should be used in the analysis and how the tool should be implemented? The thesis was restricted to the spare parts of circulating fluidized boilers and bubbling fluidized bed boilers. In addition, this Thesis was restricted to consider the spare parts packages sold with new installations by Valmet Technologies units in Finland i.e. Capital Projects business unit and Service Spare Parts division in Finland. The study in this thesis was constructive case study i.e. the research problem was solved by using a construction based on practical case problem and previous theory. The research was done by working at Valmet Technologies Oy, interviewing and discussing with the personnel of Valmet Technologies Oy and with supplier company’s representatives, examining documents and reports related to the spare part packages and analyzing researches, articles, books and other theoretical literature concerning criticality analyses, fluidized bed boilers and implementation of a new tool in industrial environment. The most of the empirical data was collected by interviewing the personnel in the case company. The theoretical framework was formed based on previous researches, articles and books related to spare parts criticality and Valmet’s training material related to circulating fluidized bed boiler called CYMIC. The main results of the thesis are the new criticality analysis tool, complete analysis of pilot case spare part package, done using the new CA-tool, and careful verification and validation of the CA-tool for preparing the tool to be taken into action.