Risk analysis of the old pipe networks for priority determination of renovation

Jae Hyeon Lee; Sang Mok Lee; Byung Soo Park; Hyuk Jae Kwon

doi:10.3741/JKWRA.2022.55.S-1.1167

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2022 Vol.55, Issue 12S Next Page

Research Article

Risk analysis of the old pipe networks for priority determination of renovation 노후 상수관망 개량 우선순위 결정을 위한 구역별 위험도 분석

31 December 2022. pp. 1167-1175

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Abstract

In this study, management index method has been developed to estimate the level of deterioration, applied to Cheongju city, and compared with the previous estimation methods of deterioration level of water distribution system. From the results, distribution systems of Yullyang, Naedeok1 and Yongam2 are found to be seriously deteriorated. And it was also found that probability of pipe breakage was estimated as 3.21%, 4.64% which is highest level at the steel pipe of 200 mm and 300 mm diameter. It was found that risk degree was estimated as 0.2609, 0.2644 by using management index method in Naedeok1 which is the most dangerous distribution system in the city. It was also found that results of risk analysis by management index method have been similar with the results of safety analysis by reliability method and indirect estimation method of deterioration level. Therefore, newly developed management index method can be applied and may be useful to the estimation of deterioration level for the future maintenance and management of water distribution system.

Keywords

Pipe network

Management index

Deterioration

Risk analysis

본 연구에서는 노후도를 보다 간단히 평가할 수 있는 운영지수 분석법을 개발하였고 이를 기존의 노후도 분석법과 비교 분석하였다. 청주시 상수관망에 적용하여 노후도를 비교 분석하였으며 사용성을 입증하였다. 기존의 간접평가법 분석결과, 율량동(구시가지), 내덕1동, 용암2동 상수관망의 노후도가 가장 높은 것으로 분석되었으며, 신뢰성해석을 통한 안전도 분석 결과 내덕1동 상수관망이 직경 200 mm, 300 mm 강관 모두 파괴확률 3.21%, 4.65%로 안전도가 가장 취약한 것으로 분석되었다. 운영지수 분석법의 경우, 내덕1동 상수관망이 직경 200 mm, 300 mm 강관 모두 위험도 0.2609, 0.2644로 가장 높은 것으로 분석되었으며, 개량 우선순위는 비슷한 것으로 나타났다. 따라서 향후 운영지수 분석법을 통해 상수도관을 보다 간단하게 노후도를 분석하여 상수관망의 운영관리에 활용이 가능할 것으로 판단된다.

키워드

상수관망

운영지수

노후도

위험도 분석

References

Kim, E.S., Lee, S.H., and Yoon, K.Y. (2014). “Assessment of the deterioration of large-diameter pipe networks (I): Development of an assessment model.” Journal of the Korea Academia-Industrial cooperation Society, Vol. 15, No. 1, pp. 482-487. 10.5762/KAIS.2014.15.1.482

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Kwon, H.J., and Lee, K.J. (2021). “Safety analysis and deterioration evaluation of water pipe for improvement according to service year.” Journal of Korea Water Resources Association, Vol. 54, No. 8, pp. 589-597.

Lee, H.D., Bae, C.H., Hong, S.H., Hwang, J.W., and Kwak, P.J. (2004). “Residual life assessment on cast iron pipes of water distribution system.” Journal of Korean Society on Water Quality, Vol. 20, No. 3, pp. 206-214.

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Information

Publisher :KOREA WATER RESOURECES ASSOCIATION
Publisher(Ko) :한국수자원학회
Journal Title :Journal of Korea Water Resources Association
Journal Title(Ko) :한국수자원학회 논문집
Volume : 55
No :12
Pages :1167-1175
Received Date : 2022-07-13
Revised Date : 2022-08-21
Accepted Date : 2022-08-23
DOI :https://doi.org/10.3741/JKWRA.2022.55.S-1.1167

Journal of Korea Water Resources Association ISSN:2799-8746(Print) 2799-8754(Online) 한국수자원학회 논문집

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