与公认的做法相反，故意修复和更换配电系统基础设施是持续服务、水质和审慎财政做法的关键。为此目的，资本资源的再投资取决于合理规划的实践。在实践中，此类基础设施更新还将减少配电系统维护，提高水力能力和消防可用流量，并减少整体系统问题。本文介绍了基础设施更新计划所依赖的决策，并讨论了四种建模类型。它们是:提供设施特征分析的预测建模；地理建模，考虑系统布局和水力因素；将无形因素与预测因素和地理因素相结合的评估模型；以及财务建模，以优化现有资金的分配，并支持未来支出增加的理由。 由于几乎所有的分销系统都由几个年份和类型的部件组成，这些部件与系统的特定部分直接相关，基于其开发时间，可以安全地假设，给定年份的所有设施在其“磨损”方面都会表现类似虽然适用于构成配电系统的所有设施，包括泵站和阀门等，以最大限度地提高系统的可行性，但仅考虑此过程中的主管道就足够了。

Contrary to accepted practice, the deliberate rehabilitation and replacement of distribution system infrastructure is key to continued service, water quality, and prudent fiscal practices. The reinvestment of capital resources to this end are predicated on the practice of sound planning. In practice, such infrastructure renewal will also reduce distribution system maintenance, improve hydraulic capacity and flows available for fire protection and reduce overall system problems. This paper covers the decision making that an infrastructure renewal plan counts on and discusses four types of modeling. These are: predictive modeling to provide the analysis of facility characteristics; geographic modeling to incorporate factors due to the layout and hydraulics of the system; evaluative modeling to combine intangible factors with predicted and geographic factors; and financial modeling to optimize the allocation of existing funds and support the justification of any increases in future spending. Since almost all distribution systems are made up of several vintages and types of parts which are directly related to a particular part of the system based on when it was developed, it is safe to assume that all of the facilities from a given vintage will behave similarly in its "wear." Although applicable to all of the facilities that make up a distribution system including pump stations and valves, etc. for the purposes of maximizing system viability, considering just the mains in this process is sufficient.