QUANTITATIVE NONDESTRUCTIVE TESTING METHOD FOR REMAINING LIFE OF PIPELINE STEEL

The present invention belongs to the technical field of pipeline quality inspection, in particular to a quantitative nondestructive testing method for remaining life of pipeline steel. The specific steps of the quantitative nondestructive testing method for the remaining life of the pipeline steel are as follows: step 1: firstly, measuring the length of a pipeline to be tested, dividing the pipeline with the length into equal lengths, and comprehensively testing each length, wherein testing items comprise cathodic protection condition detection, stray current interference condition detection, anticorrosive layer damage point detection, pipeline buried depth detection, operating pressure capacity detection and steel pipe material detection. The quantitative nondestructive testing method has simple operation steps, can accurately test the remaining service life of the pipeline, and can predict the later corrosion degree of the pipeline according to the corrosion capacity of the soil around the pipeline, so as to facilitate early intervention.