Lifecycleinventorycalculation methodologyforsteelproducts
bsi.
Nationalforeword
This British Standard is the UK implementation of ISO 20915:2018.
The UK participationin its preparation was entrusted to Technical Committee ISE/1 Iron and steel standards co-ordinating mittee.
A list of organizations represented on this mittee can be obtained onrequest to its secretary.
This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.
The British Standards Institution 2018 Published by BSI Standards Limited 2018
ISBN 978 0 580 92436 1
ICS 77.080.20
Compliance with aBritishStandard cannot conferimmunity fromlegal obligations.
This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2018.
Amendments/corrigenda issued since publication
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INTERNATIONAL STANDARD
Lifecycleinventorycalculation methodologyforsteelproducts
Methodologie de calcul de l'inventaire du cycle de vie desproduits en acier
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@ ISO 2018 Published in Switzerland
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Contents
Page
4.1 General requirements.. 34.2 Function and functional unit. 34.3 4.4 System boundary Data quality 4 54.4.1 4.4.2 Time-related coverage General. 5 54.4.3 Geographical coverage.. 54.4.4 4.4.5 Technology coverage Sources of the data 5 54.4.6 Cut-off criteria 5
5 Methodological procedure for LCI calculation of steel products with provision for scrap recycling.
5.1 General. 65.2 5.3 Calculation of cradle to gate LCI without allocation for scrap input. Allocation for scrap recycling 7 85.3.1 5.3.2 LCI calculation methodology for scrap. General. 8 8Calculation of the burdenforscrap input to produce thespecificsteel product under study.5.3.4 Calculation of the credits for scrap recovery. 8 65.4 Collecting data. 5.4.1 General. 9 95.4.2 Co-products. 95.4.3 5.4.4 Process coal. Ferrous raw materials. 10 115.4.5 5.4.6 Non-ferrous raw materials. Ferro alloy. 11 115.4.7 Other input materials. 115.4.8 5.4.9 Process gases Fuels. 11 115.4.10 5.4.11 Electricity Steam 12 125.4.12 Sea water. 125.4.13 5.4.14 Fresh water. Industrial gases. 12 125.4.15 5.4.16 Flares. Emissions to air water and soil. 12 125.4.17 Transportation. 135.5 Allocation procedure for co-products. 5.5.1 General requirement. 13 135.5.2 System expansion. 13Reporting. 13
