PLANTILLA PARA EPD DE PRODUCTOS DE ACERO

In those cases in which first-hand data for specific processes and/or materials was notavailable theoretical calculations, estimations or the use of data from internationallyrenowned sources (ECOINVENT, BUWAL, ETH, etc) has been used. Special use hasbeen made of the Ecoinvent database, due to its content of more tan 4000 life-cycleinventories and its frequency of actualization.5. ENVIRONMENTAL BEHAVIOUR OF THE PRODUCT IN THE LIFE-CYCLE5.1 Methodology for Calculating and Exclusion criteriaRECYCLEDSTEEL100%In the following section we provide the environmentalbehaviour information according to the document withreference PSR 2002:1 for steel products, includingthe manufacturing process, delivery, use and end-oflife, for Vicinay Cadenas light and heavy chain in R4and R4S qualities.All of the values reported in the following point refer tothe functional unit of this study (1.000Kg of chain from 60mm to 180mm in diameter andR4 and R4S quality).The data is taken from the consumption control tables created by Vicinay Cadenasusing information from natural gas, electricity and water bills from the utility companies,the weight control from a properly calibrated scale and delivery notes of the diversesupplies reported according to the Environmental Management System certifiedaccording to ISO 14001:2004 procedure “Measuring and Follow-up”.14/25