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Edition and Publication:
< Natural Gas and Oil > Editorial Department
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China Petroleum Engineering & Construction Corporation
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Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
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610041
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Issue:ISSN 1006-5539
          CN 51-1183/TE

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    Your Position ：Home->Past Journals Catalog->2012 Vol.6

    Method for Service Life Evaluation of Internal Coating of In-service Pipeline Based on Fuzzy Theory
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    Key Words：Pipeline； Fuzzy theory； Internal coating； Evaluation
    Abstract： Because pipeline internal coating can not be inspected directly， it is particularly important to carry out dependability assessment and service life evaluation on internal coating of pipeline in service. In order to evaluate service life of internal coating of pipeline in service scientifically and rationally， established is a model for service life evaluation based on fuzzy theory. In the model， applied is the fuzzy transformation to transform the fuzzy evaluation of stratified index into general fuzzy evaluation and final scores can be obtained in combination with a set of comments. Described are model structure and specific procedures of this system. Combined are practical conditions of internal coating in a certain gas pipeline to determine 4 class 1 indexes and 24 class 2 indexes， which are applied in service life evaluation on internal coating of pipeline in service for 5 years and the application results show that it is feasible.
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