NF ISO 14404-4, A03-020-4 (04/2024)

This document provides recommendations for calculating CO2 intensity in steel plants applying all types of manufacturing lines by defining the scope, CO2 emission factors and intermediate products for which upstream emissions are taken taken into account for each type of manufacturing range. In particular, this document provides recommendations applicable to the ISO 14404 series of standards for the types of steel plants listed below. This document also includes the universal spreadsheet covering all relevant emission sources from ISO 14404-1, ISO 14404-2 and ISO 14404-3 to facilitate the calculation of CO2 emissions. i) Steel plants applying different manufacturing ranges in accordance with ISO 14404-1, ISO 14404-2 and ISO 14404-3 (7.2.1) ii) Steel factories applying more than one manufacturing range (7.2.2) iii) Steel plants purchasing raw iron externally (7.2.3) iv) Steel plants and rerolling steel plants purchasing all or part of their raw steel from external suppliers (7.2.4) In addition, This document provides additional guidance to the full ISO 14404 series of standards on the following topics. a) Assessment of exported slags b) Assessment of gaseous by-products c) Stock assessment d) Selection of calorific values and emission factors for electricity and fuel Conversion into energy consumption and consumption efficiency can be carried out using Annex A. Although the use of the calculation result is not covered by this document, Annex B provides recommendations regarding appropriate and inappropriate applications.
(Automatic translation from French)