In China, oil and natural gas are very important for the economic development. And they are the necessity of people. Most of the oil and gas are stored in the area, which is very remote and there is few people in there. The longdistance pipeline is the carrier of oil and gas, so the safe and effective operation is safeguard to national normal production and life. Pipeline indetector(PIG)had been developed, and all kinds of flow can be deteceted. When the detector finds flaw in the pipelines, what can be don...
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