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http://dx.doi.org/10.7842/kigas.2017.21.6.8

An Experimental Study on the Mechanical Impact (Third Party Damage) of High Pressure Gas Pipe  

Lee, Kyung-eun (Safety Research Division, Korea Gas Safety Corporation)
Kim, Jeong Hwan (Safety Research Division, Korea Gas Safety Corporation)
Ha, Yu-jin (Safety Research Division, Korea Gas Safety Corporation)
Kil, Seong-he (Safety Research Division, Korea Gas Safety Corporation)
Publication Information
Journal of the Korean Institute of Gas / v.21, no.6, 2017 , pp. 8-14 More about this Journal
Abstract
One of the main causes of gas pipeline accidents is mechanical impact(third party damage). The majority of high pressure gas pipelines buried in major domestic industrial complexes are old pipes which have being operated over 20 years. Therefore, if an accident occurs, there will be a full scale accident because there is no additional inspection and reinforcement time. In this study, the defects on the piping during the mechanical impact were studied through the third party damage(excavation) experiments. Experiments were carried out using the 21 ton excavator which is operated in the actual excavation work and the type of pipe to be struck are ASTM A106 Grade.B and ASTM A53 Grade.B. As a result, when the bucket used during excavator operation is a sawtooth bucket, the defect is more bigger. And the smaller the diameter of the pipe, the smaller the depth and length of the defect. Also, it was confirmed that the impact height had no effect on the defects on the buried pipe, during the excavation work.
Keywords
third party damage; excavator; defect;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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