By Frank Werner
In an environmental lifestyles cycle evaluate of goods (LCA), an unambiguous, scientifically established, ‘objective’ attribution of fabric and effort flows to a product is natural fiction. this is often as a result of the basic epistemological stipulations of LCA as a modelling procedure less than the complexity of our socio-economic approach. in its place, numerous psychological types and values advisor this attribution. This ends up in a practical version in a particular determination situation.
This publication exhibits for the 1st time how psychological versions and values impression this attribution within the lifestyles cycle stock step of LCA. one of many key findings is that the various administration ideas for a sustainable use of fabrics needs to be taken into consideration for the attribution of fabric and effort flows to a product. in a different way, development concepts instructed via an LCA may possibly prove to even irritate the environmental scenario if reassessed from a meta-perspective.
As a end result of this publication, the declare of unambiguitiy (‘objectivity’) of the existence cycle stock has to be deserted. A group-model development strategy for LCA is built that permits one to understand the choice makers' psychological versions and values within the stock research on a case- and situation-specific foundation. in simple terms through this, LCA effects turns into suitable in a decision-making process.
Two case reports at the modelling of recycling and different end-of-life recommendations of aluminium home windows and beech wooden railway sleepers in LCA supplement the methodological part.
This booklet is a ‘must have’ for researchers, experts and practitioners within the fields of decision-oriented lifestyles cycle overview in addition to product-related environmental administration, modelling and decision-making.
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Additional resources for Ambiguities in Decision-oriented Life Cycle Inventories: The Role of Mental Models and Values
1998) or the Eco-indicator 95 (Goedkoop 1995) and Eco-indicator 99 (Goedkoop and Spriensma 2000). e. the dimensions ‘society’ and ‘economy’ are not analysed. Occupational health is also disregarded. As methodological development of LCA is continuous, the positioning of LCA as a decision support tool can only be provisional. e. products including services (and plants) are objects of analysis; • LCA assesses changes in single human activities or average human activities and cannot describe the state of the environment or societal responses to environmental stress; • LCA assesses potential global environmental interventions and damages by assuming a unit-world with average meteorological and ecological conditions; • LCA compresses the time dimension in the modelling phase as well as in the impact assessment phase and does not discount the future62; • LCA relies on input-output accounting.
Validation can also be seen as a negotiation process, in which criteria for validity are negotiated corresponding to the uncertainties, stakes and interests involved (see Haag and Kaupenjohann 2001:56)38. However, models developed in the context of decision-making can be quasi-validated: if the outcomes of an assessment tool – and thus its underlying models – become relevant for the decision-maker in a way that they influence his/her action39. Indeed, this is the real challenge for further methodological development of LCA.
As a relatively young tool, the position of LCA to other decision support tools such as risk assessment, environmental performance evaluation or siterelated environmental auditing is still provisional46 and methodological development is ongoing. , ISO/EN 14040; see also Chap. 1 ISO/EN 14040, chap. 1 Methodological structure of LCA In this chapter, the methodological structure of LCA is outlined. Reference is made to the series of standards ISO 14040 covering the methodology of the tool as one of the most up-to-date documents on LCA-methodology.