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Water 2014, 6(12), 3864-3887; doi:10.3390/w6123864

Rehabilitation Priority Determination of Water Pipes Based on Hydraulic Importance

1
Research Center for Disaster Prevention Science and Technology, Korea University, Seoul 136-713, Korea
2
Department of Civil Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si 446-701, Gyeonggi-do, Korea
3
Department of Civil Engineering, Seoul National University of Science and Technology, 172, Gongreung 2-dong, Nowon-Gu, Seoul 139-743, Korea
4
School of Civil, Environmental and Architectural Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 136-713, Korea
*
Author to whom correspondence should be addressed.
Received: 18 August 2014 / Revised: 22 November 2014 / Accepted: 2 December 2014 / Published: 8 December 2014
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Abstract

This paper describes a study conducted to develop a method to facilitate more reliable determination of the rehabilitation priority order for water pipes by taking into account the pipes’ hydraulic importance. Existing methods use only the pipeline deterioration rate to determine the rehabilitation priority order. Accordingly, the deterioration rate under normal conditions and the hydraulic importance under abnormal conditions of water distribution pipelines were classified according to two different attributes. The deterioration rate of a water distribution pipeline was calculated in terms of the deterioration rate due to pipeline information factors and the deterioration rate resulting from the installation environment/external factors. The hydraulic importance of water distribution pipelines was calculated by considering the importance of a single pipe failure caused by water leakage or an accident and that of a multiple pipe failure caused by a disaster, such as an earthquake. These four attribute factors were employed in a multi-criteria decision-making process called a weighted utopian approach, developed in this study, that determines the final rehabilitation priority order for each pipeline. The study results indicate that the rehabilitation priority order can be determined more easily using this approach than with previously-developed methods and that the model developed is easier and more convenient to apply than existing rehabilitation priority order models that require a large amount of data, as well as complex failure probabilities and mathematical models. View Full-Text
Keywords: rehabilitation priority; water pipes; hydraulic importance; decision making rehabilitation priority; water pipes; hydraulic importance; decision making
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yoo, D.G.; Kang, D.; Jun, H.; Kim, J.H. Rehabilitation Priority Determination of Water Pipes Based on Hydraulic Importance. Water 2014, 6, 3864-3887.

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