scope:

This Standard specifies guidelines and requirements for LCI studies of steel products reflecting steel's capacity for closed-loop recycling, including :

a) specification of functional unit used for LCI calculation of steel products;

b) definition of system boundary 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 calculation results, including life cycle impact assessment (LCIA), is outside the scope of this Standard.

NOTE The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 20915 : 2018 Life cycle inventory calculation methodology for steel products (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.