基于风险腐蚀速率的储罐底板腐蚀声发射量化评价方法研究

基于统计理论，引入风险概念，综合分析储罐底板腐蚀的声发射检测和漏磁检测数据，得到基于漏磁检测数据的声发射参量对储罐底板腐蚀的量化方法。通过对6台储罐的分析，得到某一地区介质为原油的一类储罐的声发射典型参量与储罐底板腐蚀的量化关系，即声发射活度与风险腐蚀速率CRP的关系为：y=13946．9758x，得到CRP与实际腐蚀速率CTP的关系为：Y=12．0412x。对评估储罐进行声发射检测，利用该评价模型可得到CRP，进而得到管理腐蚀速率CMP，为储罐管理维修决策提供依据。

Acoustic Emission Quantification Evaluation Method Research of Tank Bottom Corrosion Based on Risk Corrosion Rate

According to reference 8 ], based on the statistical theory, bringing in risk concept, the acous- tic emission testing and magnetic flux leakage testing data of tank bottom corrosion were comprehensively analysed, and then the quantification method of the acoustic emission parameter based on the testing data of the magnetic flux leakage which was about tank bottom corrosion was got. Through the analysis of the 6 tanks,the quantification relationship between the acoustic emission typical parameter of a class of tanks which held crude oil medium and tank bottom corrosion was got in an area, the relationship between a- coustic emission activity and risk corrosion rate of CRP is y = 13946. 9758x ,the relationship between CRP and actual corrosion rate CTP is y = 12. 0412x. Testing the tanks which need evaluate with acoustic e- mission, using the evaluation model, CRP can be got and then management corrosion rate of CMP can be got, the basis of management and maintenance decision of tank can be provided for.