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한국수자원학회 / v.3, no.1, 2002년, pp.63-74 
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( A REVIEW AND A METHODOLOGY FOR SCHEDULING OPTIMAL REPLACEMENT OF PIPES IN WATER DISTRIBUTION SYSTEMS ) |
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| 초 록 |
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| In this paper a review of various methods of identifying failure prone pipes in water distribution systems is presented. Also a new analytical methodology that separately deals with an economically sustainable break rate and the current break rate of an individual pipe to determine the optimal time of replacement is given. The sustainable economical break rate is obtained by minimizing the total cost resulting from replacement and repairs. It yields some of the previously available replacement criteria under weaker restrictions. Equivalence relations are established between the derived threshold break rate and the rate of occurrence or failure (ROCOF) and the hazard rate functions. These statistical functions are fitted to each pipe's break record. Optimal replacement time is obtained by equating the sustainable break rate to the assessed (predicted) break rate from the ROCOF, and the hazard rate functions. Design charts to determine the optimal threshold break rate as a function of pipe diameter and discount rate can be generated. A numerical examples illustrating the methodology is included |
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| 키워드 |
| water distribution systems;break rate;rehabilitation;renewal;failure;optimization; |
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Water Engineering Research / v.3, no.1, 2002년, pp.63-74
한국수자원학회
ISSN : 1229-6503
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921039945)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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