Noncontact detection of the rotted points on the coating surface of the undersea pipelines
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Abstract:
In the deep sea, direct measurement of pipeline cathodic protection status is very difficult. We explored a noncontact method by measuring the potential distribution of the environment field around the undersea pipelines to detect the rotted points on the coating surface. It included two aspects: developing a new type of the solidstate Ag / AgCl reference electrode for the deep sea; useing the virtual instruments to design the environment field measurement system. The noncontact measurement system was applied in the ocean of Qingdao city, P.R.China as experiments. The experimental results show that the noncontact measurement system within four meter distance to the undersea pipelines, can accurately detect rotted points.
