📑2. Data Collection (LCI)
Life Cycle Inventory (LCI) is the second step of LCA. Here is where you need to collect all the data points required for LCA.
Your data doesn't need to be perfectly complete. Yook's software can work with every type of data. Whether complete or incomplete, whether automated data exchange via API or manual CSV exports - We have you covered. Data gaps are closed by our software and we guide you toward collecting the most relevant and vital data points with the help of our accuracy metric. make
Product Data Collection and Sources
We collect your product data using manual or automatic exports from your ERP/ PLM system. In general, we work with every data point available. But keep in mind that, the more and better data points are available, the more accurate the result is ( see the Accuracy Score).
Important data points over the product's life cycle are weight, material composition, origins, production methods, as well as supply chain data, and packaging information. We use sector-specific guidelines and industry-specific proxies in case of data gaps. Thus, most of the data points are already available in a BOM export. Additional information, such as the energy mix used in your production facilities or supplier-specific data, can be uploaded additionally.
The following table shows which data is required in the different life cycle stages, using the example of a plastic chair.
Materials
Weight (product + components)
materials
Name
Composition
Origin
Supplier properties
chair weight: 5,5 kg
4,5 kg Polypropylene (PP)
>origin: unknown, proxy: China
>50 % recycled
1,0 kg Steel Screws
>origin: Poland
Material Transformation
Process type
Material loss
Energy consumption
Type of energy supply
Additional input (e.g. chemicals)
Location
Injection Molding (PP)
>3,5 % loss rate
>12 kWh electricity
>Italy
Production
Process type
Energy consumption
Energy mix at production facility
Additional input (e.g. chemicals)
Location
Chair Assembly (semi-automated)
>2,5 kWh electricity
>Germany
>100 % renewables
Transport
1. Raw materials - Transformation
2. Transformation - Production
> Distances
> Transport means
PP: China (proxy) - Italy - Germany
>12.000 km ship + 1.500 km truck
>1.800 km truck
Screws: Poland - Germany
>1.500 km truck
Packaging
Weight and type of raw material packaging
Weight and type of component packaging
Weight and type of product packaging
corrugated carton: 1,2 kg
>100 % recycled
Plastic bag: 0,085 kg
Building virtual BOMs to depict the product flow
Now it's on us: we check your product data, close data gaps, merge data from different sources, and clean it up. Then, we use your static data to replicate the product flow, accounting for non-linear relations and supply chains. This is what we call a virtual BOM.
Typically, your BOM comprises a multitude of components and sub-components. Among these are items that undergo processing or sub-assembly, details not directly included in the BOM. Therefore, we enrich this information to provide a more comprehensive overview.
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