共查询到19条相似文献,搜索用时 562 毫秒
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采用概率数据处理方法,对储罐底板腐蚀的漏磁检测结果进行处理,得到底板最大腐蚀深度、平均点腐蚀深度、平均点腐蚀速率、最大点腐蚀速率和穿孔概率等参数,对储罐底板腐蚀程度进行了定量描述并预测储罐底板穿孔概率.利用上述检测和数据处理方法可以对设备局部腐蚀状况作出定量评估,并对设备寿命进行预测. 相似文献
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对某输油站5 000m3原油储罐采用PAC SAMOS-32检测系统进行底板声发射在线检测,对声发射检测信号进行分析处理,经滤波、聚类、选取等方式去除干扰,依据单位时间内有效的事件数及事件的平均能量得到储罐底板的腐蚀状况。然后,对储罐进行开罐验证,通过常规无损检测方式得到储罐底板的真实腐蚀状况。经对比研究,二者对罐底板腐蚀程度检测结果在总体上具有较高的一致性,而在局部存在一定的偏差。对出现偏差的部位进行深入研究,分析总结出了存在偏差的原因,从侧面验证了声发射检测技术应用于储罐底板在线检测的可靠性。 相似文献
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Defects due to corrosion can occur on top and bottom surfaces of a tank floor. The current magnetic flux leakage (MFL) tank inspection machines can detect and locate defects on both the top and bottom of a plate, but generally they are unable to differentiate between top and bottom. Further cleaning for visual inspections is needed to identify those defect that are on the top side and are thus more readily repaired. To avoid this additional inspection ideally the machine should be able to distinguish automatically between top and bottom surface corrosion. This paper presents experimental work specifically designed to asses the capability of current MFL based machines to distinguish defects located on the top and those on the bottom of the tank floor. Although some open literature suggests that such top or bottom classification might be possible, purpose designed experimental results presented here show that there is a very high similarity between signals belonging to top and bottom defects which suggests such discrimination is not viable using standard MFL based techniques. 相似文献
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综述了常压储罐在使用过程中可能出现的腐蚀和缺陷形态,并根据失效的可能性,给出了有效的检验检测方法,包括宏观检验、厚度检测、表面无损检测、埋藏缺陷检测、底板漏磁检测、声发射检测、真空试漏、附属设施及基础沉降检测等。分别介绍了各检测检验方法的特点以及如何在常压储罐检验中进行实施。 相似文献
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