BS ISO 20915 2018 钢铁产品生命周期库存计算方法(英文版).pdf

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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

Date

Text affected

INTERNATIONAL STANDARD

Lifecycleinventorycalculation methodologyforsteelproducts

Methodologie de calcul de l'inventaire du cycle de vie desproduits en acier

COPYRIGHTPROTECTEDDOCUMENT

@ ISO 2018 Published in Switzerland

All rights reserved. Unless otherwise specified no part of this publication may be reproduced or utilized otherwise in any formor by any means electronic or mechanical including photocopying or posting on the internet or an intranet without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country ofthe requester.

ISO copyright officeCh. de Blandonnet 8 • CP 401 CH-1214 Vermier Geneva SwitzerlandTel. 41 22 749 01 11 Fax 41 22 749 09 47copyright@

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

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