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《Journal of Logistical Engineering University》 2013-04
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Failure Analysis on Leakage from Flange of Compressor Temperature Transmitter in Oil Depot

Zhang Heng-yang1,2,Feng Jian3,Cai Ke4,Ma Qiang1(1.Unit 63996,Beijing 100094,China;2.Dept.of Oil Application & Management Engineering,LEU,Chongqing 401311,China;3.Xinjiang Oil and Gas Branch,PetroChina West Pipeline Company,Xinjiang 830063,China;4.Safety and Integrity Assessment Center,Research Institute of Tubular Goods of CNPC,Xi'an 710065,China)  
A root leaked flange in compressor temperature transmitter is analyzed by means of photography,nondestructive testing,chemical component analysis,metallographic analysis,micro hardness testing,scanning electron microscopy and energy spectrum analysis in some oil depots of support bases.The result shows that the reason of flange root leakage is caused by the incomplete penetration and inclusions in soldering seam;and with the external stress on the Marten site zone,the root leakage is intergranularly cracked,and the fillet weld brittly fractures at last.In combination with the actual situations,suggestions are given to avoid the occurrence of similar accidents.
【CateGory Index】: TE973.6
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