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Utilizing Condition Assessment Data in Pipeline Replacement and Reinvestment Planning

机译:在管道更换和再投资计划中利用状态评估数据

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摘要

Water, sewer and storm pipeline systems are a major capital investment and utilities must ensure they are properly maintained if they are to perform as desired. Pipelines can account for the largest percentage of capital investment and a significant portion of the operating cost investment. Due to their typically long life cycle and expensive renovation costs, proper planning for pipeline reinvestment can improve the financial health of a utility and provide for effective continuous service. Various methods have been proposed to evaluate reinvestment needs for pipeline assets including general rules of thumh supplemented by experience, survival functions, and condition matrices. Pipeline deterioration can be a result of damage caused by adjacent construction activities, weather, ground movement, vandalism and normal wear and tear. Regardless of the reason for pipeline deterioration, a sound condition assessment program can identify pipeline assets that require repair or replacement. In order to fully leverage condition assessment data, it is important that the projection of reinvestment consider the data collected from inspection. In this way new pipe that is "acting" old and old pipe that is "acting" new can be properly evaluated as to the financial requirement to maintain the pipe in good working order. This paper discusses various aspects of reinvestment planning and the use of condition assessment data in a utilities reinvestment program.
机译:自来水,下水道和雨水管道系统是一项重大的资本投资,公用事业必须确保对其进行适当维护,以使其达到预期的性能。管道在资本投资中所占比例最大,在运营成本投资中所占比例也很大。由于其通常较长的生命周期和昂贵的翻新成本,对管线进行再投资的适当计划可以改善公用事业的财务状况并提供有效的连续服务。已经提出了各种方法来评估管道资产的再投资需求,包括一般经验法则,经验,生存函数和条件矩阵。邻近的建筑活动,天气,地面运动,故意破坏和正常磨损可能会导致管道损坏,从而导致管道退化。不管管道退化的原因是什么,完善的状态评估程序都可以识别需要维修或更换的管道资产。为了充分利用条件评估数据,重新投资的预测必须考虑从检查中收集的数据,这一点很重要。以这种方式,可以适当地评估财务需求以维持管道处于良好的工作状态,该新管道“作用于”旧管道,而“旧管道”作用于新管道。本文讨论了再投资计划的各个方面以及公用事业再投资计划中条件评估数据的使用。

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