Test Research on Stress Corrosion Cracking of LPG Spherical Tanks

机译：LPG球罐应力腐蚀开裂的试验研究

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Owing to refine the imported crude oil containing high sulfur in recent years, more and more interior surface stress corrosion cracks were found in the oil-refining spherical tanks. The reason and the main influence factors referred to the stress corrosion cracking of the spherical tanks were analyzed in the article. Basing on safety of pressure vessel and LPG spherical tanks, using the methods of linear elastic and fracture mechanics, the mechanisms of stress corrosion cracking in wet H2S environment were analyzed specially to both 16MnR and SPVSOQ spherical tank steel. The stress corrosion cracking tests of pre-fatigue crack M-WOL specimen in three H2S concentrations were performed under the different welding conditions. Through the safety performance analysis of equipment, preventing countermeasure had been proposed. This method could be also extended to forecast accident in LPG SCC.

机译：由于近年来对进口的含硫量高的原油进行精炼，在炼油球形罐中发现了越来越多的内表面应力腐蚀裂纹。分析了球形罐应力腐蚀开裂的原因和主要影响因素。基于压力容器和液化石油气球罐的安全性，采用线性弹性和断裂力学方法，对16MnR和SPVSOQ球罐钢在湿H2S环境下的应力腐蚀开裂机理进行了专门分析。在不同的焊接条件下，在三种硫化氢浓度下进行了疲劳前裂纹M-WOL试样的应力腐蚀开裂测试。通过对设备的安全性能分析，提出了预防对策。该方法还可以扩展到LPG SCC中的事故预测。

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《The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)论文集》|2008年|1178-1182|共5页
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KONG Fanyu; GONG Jianming; ZHANG Xiancheng;
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stress corrosion crack; wet sulfide hydrogen environment; high strength steel; spherical tank;

机译：应力腐蚀裂纹;湿硫化氢环境;高强度钢;球形罐;

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Test Research on Stress Corrosion Cracking of LPG Spherical Tanks

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