BS ISO 20915:2018 pdf download

BS ISO 20915:2018 pdf download.Life cycle inventory calculation methodology for steel products
1 Scope
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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 14040:2006, Environmental management — Life cycle assessment — Principles and framework
ISO 14044:2006, Environmental management — Life cycle assessment — Requirements and guidelines
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1 steel product
product produced from steel and shipped out from steelworks
EXAMPLE Hot rolled steel, pickled hot rolled steel, cold rolled steel, finished cold rolled steel,electrogalvanized steel, hot-dip galvanized steel, tin-free steel, tinplated steel, organic coated steel, section, plate, rebar, engineering steel, wire rod, seamless pipe, UO pipe, welded pipe.
3.2 final product
product that requires no additional transformation prior to its use
EXAMPLE Automobiles, building structures, building envelopes, packaging.
[SOURCE: ISO/TS 18110:2015, 2.2, modified — The example has been added.]
4.3 System boundary
As shown in Figure 2, the system boundary used for the LCI study of steel products shall include all of the production steps from input materials (raw materials in the earth, scrap, etc.) to finished products ready to be shipped from the steelworks, including the recycling of steel products (i.e. cradle to gate). This includes production processes at the steelworks and all the upstream processes, including energy conversion, raw material mining, material preparation and transportation of materials to the steelworks site. The effect of scrap recycling, or the burdens of using scrap and the credits for the recovery of steel products, should be considered according to the procedure described in 5.3. The calculation of steel product LCIs should include allocation on scrap to reflect the nature of closed loop recycling. Cradle to gate LCIs without scrap allocation may be reported when this is aligned to the goals and scope of the study. Additionally, care should be taken that if no burdens are assigned to scrap inputs, then no credits should be applied to steel recycling. Also, the recovery and use of steel industry co-products outside of the steelworks shall be taken into account according to the allocation procedure described in 5.5. The system boundary does not include the manufacturing of final products using steel products or their use in the society.