The objective of this study will be to consolidate a specification model for the two main current LCA practices: LCA-A and LCA-C.
Based on discussions with practitioners and researchers, it will re-examine the recommendations of SCORE LCA studies in order to position them on a dual scale of practices, according to desirability and operationality (to what extent is this recommendation a desirable practice? Is it operationalisable?).
It will incorporate the results of this work into a comprehensive specification model, presenting the requirements and recommendations to be followed at each stage of an LCA study.

La méthode d’évaluation de la criticité des matériaux utilisée par la Commission Européenne inclut des critères relatifs à la disponibilité et aux risques géopolitiques, mais pas liés aux aspects environnementaux associés à ces matériaux.L’objectif de l’étude serait d’étudier dans quelle mesure les impacts environnementaux, quantifiés notamment via l’ACV, pourraient venir compléter la définition de criticités des matières premières.A voir le lien possible avec les limites planétaires appliquées aux matières premières ?

What are the alternatives for improving the consideration of different end-of-life activities using the Circular Formular Footprint (CFF)? How can standardisation and weighting practices as described in ISO 14074 and PEF (Product Environmental Footprint) be improved, in particular what methodological improvements can be proposed for standardisation factors that are compatible with weighting factors based on planetary boundaries?

LCA practitioners wishing to analyse a product in terms of its water footprint may use the AWARE LCA indicator, which is used in the PEF method. More broadly, the ISO 14046 Water Footprint standard provides a comprehensive methodological framework for taking into account the various environmental impacts associated with water consumption. The aim of the study is therefore to provide feedback on how water issues are addressed in product/system assessments: do companies/manufacturers use ISO 14046 (and if so, how?) or do they simply use an LCA indicator? In addition, it is proposed to carry out a case study using the AWARE LCA indicator, in order to analyse its advantages/limitations, particularly in terms of applicability: quality and completeness of the necessary data, geographical and temporal scales, interpretation of results, most suitable LCA software, consistency with ISO 14046?

Building products are now well documented in terms of their LCA impacts. The same cannot be said for products used in infrastructure construction or large-scale projects.
In general, very little information is available on the construction phase (on new sites). The focus is often on carbon footprint assessments.

– What recommendations can be made for the use of LCA to support decisions on this type of project?
– What recommendations can be made for the construction of a reference database (particularly for low-carbon concrete)?
– How can the LCA assessment of infrastructure be improved and its use facilitated at the various decision-making stages in a project process?

This is the subject of this study launched by SCORE LCA!

Objectif : donner les clés pour initier une démarche d’interfaçage de Simapro : – présenter les différentes solutions techniques d’interfaçage de Simapro et leurs spécifications,- Illustrer ces solutions à partir d’exemples concrets,- Répondre aux questions

Les indicateurs utilisés par l’ACV (par exemple ceux utilisés par PEF) ne sont pas tous consensuels car plus ou moins (voire pas du tout) robustes.L’objectif de ce workshop serait de faire un point sur les évolutions/avancées de ces dernières années pour revisiter la robustesse des indicateurs. Il s’agira de fournir un retour critique sur les indicateurs, avec un retour d’utilisation sur chaque indicateur des membres.Ainsi pour chaque catégorie d’impact, il s’agirait de présenter : une synthèse des méthodes existantes et en développement, une analyse de qui utilise quel indicateur et pourquoi, des recommandations quant au choix

E-fuels are fuels produced from carbon-free electricity, obtained from a mix that may include renewable or nuclear sources, each of which may involve infrastructure whose construction emits CO₂. This ‘raw material’ differentiates e-fuels from biofuels, which are primarily produced from biomass. The production and use of e-fuels aims to significantly reduce the impacts associated with fuel production and use. In particular, some claim that, over their entire production cycle, ‘e-fuels have a significantly lower carbon footprint than fossil fuels’. Numerous LCA studies are being conducted to identify cases where this claim of ‘significant reduction’ is correct for e-fuels, and above all to quantify the difference in question on a case-by-case basis.

Following the 2014 SCORELCA study on ‘Taking geographical factors into account in LCA’ and the 2015 study on ‘Linking LCA and GIS’, this study aims to review how the spatialisation of impacts is taken into account in LCA methods and tools (feasibility, relevance, etc.), and the state of the art in their integration into expected LCA studies (particularly those required by regulations) and completed studies (as evidenced by published studies).

The differentiation of impacts over time (the ‘dynamic’ dimension) is often overlooked in LCA.

Indeed, ISO 14067 requires that the timing of CO₂ emissions be disregarded, i.e. that all CO₂ emissions or removals occurring during the life cycle of a product be attributed to the start of the life cycle (T0).

The content of ISO 14044 does not encourage this, and despite a request from France, the leadership of ISO/TC 207/SC 5 has not wished to move forward on this issue for the time being.

However, the long lifespan of certain products would require this dynamic dimension to be taken into account, especially since the impacts of some of these emissions vary depending on the time since release (time-specific effect curve for emissions).

The 2018 LCA and Sustainable Finance study addressed carbon credits and carbon footprints. This new study aims to take stock of carbon market mechanisms and detail calculation methods (which emission factors are used, how the inventory is compiled, etc.). The overall objective is to ensure consistency between carbon markets and LCA, particularly with regard to calculation methods and the data to be collected for these two systems.

Cas des bio-carburants : Le JEC (regroupement de la DG JRC avec les industries pétrolière et automobile) prend en compte la capture du carbone de l’atmosphère dans le bilan GES de production.Autre approche DG JRC, notamment pour les plastiques bio-sourcés : Le JRC recommande de ne pas intégrer le carbone absorbé par les plantes dans le bilan GES biogénique (Life Cycle Assessment (LCA) of alternative feedstocks for plastics production – 2021, document de position du TAB de PEF) « afin que les bilans cradle to gate ne présentent pas de valeurs négatives » (cf. échanges au TAB de PEF, avec une dizaine de retours d’experts, disponibles)Cas du méthane biogénique issu des retenues des barrages dans les zones équatoriales : Comptabilisé ou non selon les sources.Et pourtant, physiquement, « un rejet de CO2 dans l’atmosphère contribue à l’augmentation de la quantité de CO2 dans l’atmosphère, quelle que soit l’origine du C de la molécule de CO2 ».

L’objectif de cette étude est de faire le point sur l’usage en ACV des mix électriques géographiques et des mix électriques basés sur le marché (prise en compte des garanties d’origines, mix résiduels…) quand utiliser quels mix, comment et quelles implications?

Souvent questionné par les achats sur « comment faire des achats bas carbone ». De manière générale, pour les personnes, recyclé = bas carbone. Discussion par toujours facile, ce n’est pas toujours aussi simple. En effet, le recyclage est souvent perçu comme bénéfique pour l’environnement alors que ce n’est pas toujours le cas.La question posée est : que gagne-t-on à préconiser systématiquement l’achat de produits contenant du recyclé d’un point de vue impact environnemental multicritère?

When modelling steel, the data in the Ecoinvent database is rather simplistic. If we try to characterise steel more accurately, it immediately becomes very complicated and it is not always easy to choose the right alloy and surface treatment from the databases. The aim is to help practitioners model steels and cast irons in an LCA. The workshop will draw up a typology of steels used in the technosphere and propose an analysis of their environmental performance. We will compare the various existing databases on steels and cast irons: What are the existing ICVs? What allocations are considered, how are the databases constructed? How are they used and selected? What are the recommendations and limitations?