Abstract
Industrial pipeline is generally laid overhead along the pipe gallery. When the pipeline changes from cold state to heat state, the pipeline will have thermal expansion, which will generate thermal displacement and thermal stress. As a kind of heat medium, Steam has been widely used in industrial production. The pipeline has been in service at high temperature for a long time, which is prone to metal material degradation such as graphitization and spheroidization. The accidents of steam pipeline occurred frequently in recent years, so we must pay more attention to the safety of steam pipeline. The traditional inspection method adopts a random sampling model which has the risk of over inspection and missing inspection. This paper introduced the stress analysis of a steam pipeline based on ASME B31.3. Through the software, the model of the pipeline was established. According to the calculation results, a targeted inspection scheme was established and the inspection was more economical and effective
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