Risk-based underground pipeline safety management considering corrosion effect

Title
Risk-based underground pipeline safety management considering corrosion effect
Authors
나종걸신서린이건학우사마 아메드이용규한종훈
Issue Date
2018-01
Publisher
Journal of hazardous materials
Citation
VOL 342-289
Abstract
Due to the long term usage and irregular maintenance for corrosion checks, catastrophic accidents have been increasing in underground pipelines. In this study, a new safety management methodology of underground pipeline, risk-based pipeline management, is introduced reflecting corrosion effect. First, principle of the risk-based pipeline management is presented compared with an original method, qualitative measure. It is distinguished from the qualitative measure by reflecting societal risk and corrosion in safety management of underground pipeline. And then, it is applied to an existing underground propylene pipeline in Ulsan Industrial Complex, South Korea. The consequence analysis is based on real information, and the frequency analysis reflects degree of corrosion. For calculation of corrosion rate, direct current voltage gradient (DCVG) and close interval potential survey (CIPS) are conducted. As a result of applying the risk-based pipeline management, risk integral is reduced by 56.8% compared to the qualitative measure. Finally, sensitivity analysis is conducted on variables, which affect the risk of the pipeline. This study would contribute to introduce quantitative measure to pipeline management and increase safety of pipeline.
URI
http://pubs.kist.re.kr/handle/201004/68273
ISSN
0304-3894
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KIST Publication > Article
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