许多水管基础设施是用铁管建造的。一贯地 要实现100年的使用寿命，需要对这些资产进行管理 在他们的一生中，从最初的设计和建造开始。两个高度 本文讨论了管理供水管道基础设施的有效工具。 外管劣化及寿命延长机理的研究 球墨铸铁管的方法最终实现了基于风险的腐蚀防护 新型埋地球墨铸铁管道的设计策略。这个设计决策模型 认识到防止外部腐蚀的各种防腐技术 土壤环境中球墨铸铁管的腐蚀。示例方法包括 提供经济高效的长期解决方案指导，以确保 一年的生活。 对于现有管道，必须将剩余管道寿命称为 用于维修、康复和更换决策的驱动输入参数。在 能源行业面临着与基础设施老化相关的同样问题， 为此，采用了外部腐蚀直接评估（ECDA）流程 意图同样的声音工程方法，经过一些修改后，是 直接适用于水管。包括17个参考文献、表格、图表。

Much of the water pipeline infrastructure is constructed of iron pipe. Consistently achieving a 100 year service life requires management of these assets throughout their life, beginning with original design and construction. Two highly effective tools for managing water pipeline infrastructure are discussed in this paper. A study of the mechanisms of external pipe deterioration and life-extension approaches for ductile iron pipe culminated in a risk based corrosion protection design strategy for new buried ductile iron pipelines. This Design Decision Model recognizes various corrosion protection technologies for prevention of external corrosion on ductile iron pipe in soil environments. Example approaches are provided with guidance for cost-effective, long-term solutions to ensure a 100 year life. For existing pipelines, it is imperative that the remaining pipe life be known as a driving input parameter for repair, rehabilitation and replacement decisions. In the energy industry which faces the same issues related to decaying infrastructure, a process of External Corrosion Direct Assessment (ECDA) is used for this purpose. This same sound engineering approach, with some modifications, is directly applicable to water mains. Includes 17 references, tables, figures.