钢铁产品生命周期清单计算方法

[中文适用范围]： 本文件规定了对反映钢铁闭环回收能力的钢铁产品进行生命周期清单（LCI）研究的指南和要求，包括： a）用于钢铁产品LCI计算的功能单元的规范； b) 用于钢铁产品生命周期清单计算的系统边界的定义； c) 钢材LCI计算中废钢的评估； d) 钢铁产品生命周期清单计算中副产品的评估； e) 报告钢铁产品的LCI计算结果。 LCI 结果的应用，包括生命周期影响评估 (LCIA)，不属于本文件的范围。 [外文原描述]： This document specifies guidelines and requirements for conducting life cycle inventory (LCI) studies of steel products reflecting steel's capacity for closed-loop recycling, including: a) specification of the functional unit used for LCI calculation of steel products; b) definition of the system boundaries used for LCI calculation of steel products; c) evaluation of scrap in LCI calculation of steel products; d) evaluation of co-products in LCI calculation of steel products; e) reporting of LCI calculation results of steel products. The application of LCI results, including life cycle impact assessment (LCIA), is outside the scope of this document.