NBN ISO 20915:2021

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.