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Is the service life of water distribution pipelines linked to their failure rate?

机译:输水管道的使用寿命是否与其故障率相关?

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This paper aims to enable the relevant use of water main service lifetime and failure data to build a medium or long term infrastructure management plan. Firstly, how to estimate the service lifetime distribution of water mains using observations of decommissioning times which are possibly left-truncated and predominantly right-censored, is shown. Three methods are presented: a non-parametric method another based on the parametric Weibull distribution, and a third based on the parametric Herz distribution. An application with actual data related to grey cast iron water mains of two large French and German water distribution networks illustrates the implementation of the theoretical methods. The paper then investigates the link between failure rate and pipe renewal, and discusses the use of observation-based service time survival functions for infrastructure asset management.
机译:本文旨在使相关的供水主管道使用寿命和故障数据的使用能够建立中长期的基础设施管理计划。首先,展示了如何使用退役时间的观测值来估计水管的使用寿命分布,这些退役时间可能被左截断并且主要是右截尾。提出了三种方法:一种非参数方法,另一种基于参数威布尔分布,第三种基于参数Herz分布。结合法国和德国两个大型供水网络的灰口铸铁水管实际数据的应用说明了理论方法的实现。然后,本文研究了故障率与管道更新之间的联系,并讨论了基于观察的服务时间生存功能在基础设施资产管理中的使用。

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