Analysis of Leakage Causes of Ultra-high Pressure Pipeline of An Ethylene Plant
Ultrahigh pressure steam pipeline leakage is a common problem in ethylene plant.This paper analyzes the reasons of ultrahigh pressure pipeline leakage in an ethylene plant by means of macroscopic inspection,material analysis,metallographic inspection,hardness detection,mechanical property detection and chemical composition analysis.The results show that the main reason for the cracking and leakage of the high pressure pipeline of the ethylene unit is that the scratches on the inner wall of the pipeline crack and expand under the action of large circumferential stress during the pressure test.
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