CCPS Taxonomy Development

The development of the CCPS Taxonomy was essential, and it is one of the most useful results of preparing this book. The first step in creating the taxonomy was to develop a list of equipment to be included. This was accomplished by reviewing the equipment lists of over 300 different chemical processes summarized by SRI International in their Process Economics series. These lists were used in conjunction with the CCPS Equipment Re- 

Many of the data cells defined by the CCPS Taxonomy are not presented in Chapter 5 because no appropriate data were available. It is hoped that this book will promote the development of new data by the CPI to fill these empty cells. As new data are collected, modifications to the CCPS Taxonomy may be required to better reflect reliability influences. The new data should provide better answers to the following questions  

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The CCPS Taxonomy developed for this book is one step toward accumulating and collating equipment reliability data for the CPI. Ideally, it will be expanded and modified as more companies make chemical process equipment failure rates and reliability data available. We expect that CCPS will update this book and the CCPS generic data base as new information becomes available. The taxonomy may also require modification where experience shows it is needed. We would appreciate any contribution from readers to these ends. 

Chapter 3—CCPS Taxonomy Explains the CCPS taxonomy. Discusses the rationale and process for its development and the factors considered in its construction. 

This chapter reviews the structure, rationale, and method used for the development of the CCPS Taxonomy and explains how to use it. Key elements of the CCPS Taxonomy that are explained include equipment, service, and failure description. The CCPS Taxonomy is listed in Appendix A. 

The development of the CCPS Taxonomy provides an enormous number of data cells, each with its unique taxonomy number. To conserve space, the CCPS Taxonomy has been condensed for presentation in Appendix A. Figure 3.3 is an example page from Appendix A. 

Section 5.5 presents a data sheet for each cell in the taxonomy that contains failure rate data. Empty data cells are not presented. Filled data cells are listed by their CCPS Taxonomy number in Table 5.2 as an aid to the user. The CCPS data sheet format was developed from a number of sources including OREDA and IEEE Std. 500-1984. The format is presented in Figure 5.3, and its data elements are explained below ... 

Ideally, maintenance records should be organized by a classification method compatible with the CCPS Taxonomy in Appendix A and the equipment boundaries in Section 5.5, Generic Failure Rate Data Base. It is important to remember that the taxonomy presented was developed to group equipment into classes that are differentiated by their reliability rather than their design characteristics. Records maintained in this fashion allow the analyst to more easily determine the total pieces of equipment and number failures. 

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