Attributional Versus Consequentional Life Cycle Assessment Modelling in Metalworking Production System
Journal Title: Mašinstvo - Year 2019, Vol 16, Issue 1
Abstract
Two different system modelling can be distinguished in life cycle assessment: attributional and consequential. Attributional modelling is used to describe the present state of the examined system and is characterised with use of allocation, no substitutions, market average suppliers, and cut-off principle. Consequential modelling is used to describe the consequences of changes in the demand within the system and use of substitutions, marginal suppliers, and system expansion. Although the ISO 14040 standard does not make a clear distinction between attributional and consequential modelling, it does provide basic instructions on how to deal with allocations and supports both types of modelling systems. Therefore, it is important to specify within the goal and scope of life cycle assessment study which modelling is used. This research applies attributional and consequential modelling in life cycle assessment to analyse a case of metalworking production system. The aim of research is to identify if the application of different system models can lead to different conclusions and interpretation of life cycle assessment results. The obtained environmental impacts from life cycle assessment show that two system models provide different results. However the choice which one to use depends on: if investigation has to separate the product from the rest of technosphere and environment, if inputs and outputs need to be attributed to the functional unit, or if there is need for comparative analysis of products and focus on the long-term effect of the changes.
Authors and Affiliations
Boris Agarski, Đorđe Vukelić, Miodrag Hadžistević, Milana Ilić-Mićunović
Keywords
Related Articles
- EP ID EP587946
- DOI -
- Views 84
- Downloads 0
Comparative of the district heating system of countries in transition
During the second half of the last century in Europe, district heating systems (DHS) have been built intensively to supply cities and settlements with heat energy. Taking into account that energy prices at that time were...
Influence of contraction shape on the flow quality in wind tunnel test section
Contraction is a part of a wind tunnel that has the greatest impact on the air flow quality in the test section. The constriction ratio, the cross section shape, the length and wall shape are constructive parameters that...
Advantages of Bioreactor in the Process of Controlled Composting Bio-Waste
The process of composting of biowaste, while ensuring the necessary conditions and depending on the composition of composted material can be carried out in natural conditions. If we want to influence the speed and stabil...
Capacity Requirements Planning in SME's; A Computer Aided Engineering Approach
Production planning and control, as one of the managerial responsibilities in any production industry, have become increasingly complex during the last few decades particularly in the SME`s. Shortening of lead-time has b...
Analysis Hardness Changes of Tubular Workpieces Made of Al 99.5% Forward Cold Flow Forming Process
Final product of the cold forming process gain many advantages that are mostly produced by strengthening of the material in the process. Those advantages are primarily explained as improving mechanical characteristic of...