APPLICATION OF ROUGH SET THEORTY ON INTEGRITY ASSESSMENT TO BURIED GAS PIPELINES
With natural gas being more widely used in industry and people’s daily life, the reconstruction of gas pipelines and its integrity assessment are becoming very important. Soil and atmospheric corrosion for the outside of buried pipelines are the main factors that influence the integrity of buried pipelines. However, due to ignoring management of gas pipelines in long term, the information and data about the buried gas pipelines is incomplete and imprecise, therefore, it is difficult to assess the integrity of the buried pipelines according to interrelated criterion. Rough Set Theory is a new mathematical tool for data analysis and for reasoning from imprecise and ambiguous data. This paper introduces the concepts of Rough Sets Theory, then an approach of Importance Analysis of basic events in the Fault Tree by Rough Sets Theory is put forward, and an example of Importance Analysis on outside corrosion fault tree of gas pipelines is given. As the result, it is found that there are many factors affecting external corrosion of the buried natural gas pipeline and the order of Importance of theses factors is as follows: coating condition, cathode protection, and soil causticity.
YANG Linjuan SHEN Shiming
College of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing, 210009,China.
国际会议
第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)
北京
英文
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）