本文件规定了ISO 2531和ISO 16631中规定的用于水应用的球墨铸铁管寿命周期分析的评估方法。 对经济和环境影响的研究对于公用事业决策者来说很重要，因为他们寻求在预算问题与收购、运营和维护以及计划寿命结束的短期和长期需求之间取得平衡。对于设计管道系统的主管部门和工程师而言，生命周期成本分析可作为一种工具，用于研究各种场景，以确定现场特定条件和社区价值的正确解决方案，并提供必要的数据来支持这些决策。 资料性附录包含在本文件中，作为参考和共识因素（泵送成本、泄漏事故率等）的汇编。 ).

This document specifies the evaluation method of life cycle analysis of ductile iron pipes used for water applications as specified in ISO 2531 and ISO 16631. Studies on economic and environmental impacts are important for utility decision-makers as they seek to balance budget concerns over immediate and long-term needs across acquisition, operations and maintenance, and planned end of life. For authorities and engineers designing pipeline systems, the life cycle cost analysis serves as a tool to study various scenarios to determine the right solution for site-specific conditions and community values, as well as to provide the necessary data to support those decisions. Informative annexes are included in this document as a compilation of reference and consensual factors (pumping cost, leakage incident rate, etc.).