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http://dx.doi.org/10.7842/kigas.2016.20.4.33

A Study on the Development of the Repair Standards for Underground Pipelines Carrying Natural Gas  

Ryou, Young-Don (Korea Gas Safety Corporation)
Lee, Jin-Han (Korea Gas Safety Corporation)
Jo, Young-Do (Korea Gas Safety Corporation)
Publication Information
Journal of the Korean Institute of Gas / v.20, no.4, 2016 , pp. 33-43 More about this Journal
Abstract
Grinding, weld deposition, type A sleeve, type B sleeve, composite sleeve, hot tapping and clamp are used as the method to repair the buried pipelines in the United States, UK and Europe. In the event of defect to the pipeline, they have repaired the pipeline through the fitness-for-service assessments. In addition, they have guidelines for the possible repair methods to apply to each type of damage, which is occurred due to the 3rd party construction or corrosion. According to the KGS FS551, Safety Validation in Detail including ECDA(External Corrosion Direct Assessment) as one method of integrity management should be carried out for the old pipeline which supply natural gas as the middle pressure in Korea. Where a defect on the pipelines is found, on the result of Safety Validation in Detail, the pipelines should be repaired or replaced by new piping. However, there are no guidelines or regulations regarding the repair and reinforcement of pipeline, so that, cutting the damaged pipeline and replacing it as a segment of new pipe is the only way in Korea until now. We have suggested pipeline repair methods including type A, B sleeve, composite sleeve, after the survey of foreign repair method and standards including the method of United States and the United Kingdom, and after analysis of the results on pipeline repair test including type A, type B sleeve and composite sleeve.
Keywords
External Corrosion Direct Assessment; Pipe Replacement; Sleeve repair method;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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