Risk Evaluation of Gas Pipeline Based on Rough Set

Gas is a flammable, explosive and high-pressure medium. Gas pipelines are passing through many different geographical conditions of changing natural environment with gas. Therefore, a lot of adverse consequences will be bought by the gas pipeline failure, however not all consequences have a great impact on assessment of the losses. The rough set theory is used to simplify the accident loss. In this paper, the accident loss of gas pipelines of the gas enterprise in one city taken as an example is evaluated and forecasted with the rough set theory, which can bring the scientific foundation for the manager's management and decision. Above 90 percent of city gas pipelines are underground, and they drill through some broad districts where terrain is complex and soil quality is very different. Occurrences of accidents do not take on obvious because of inflammable, explosive and high-pressure medium. The great trouble is brought in the latter part of the risk assessment due to many influencing factors. Exporting problems in decision-making or classification rules, and removing redundancy factors through knowledge (attributes) reduction with the rough set theory in this article.