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Lifecycle Inventory

Lifecycle inventory (LCI)Lifecycle inventory (LCI) data analyse the material and energy flows related to a clearly defined system (the production of 1kg of hot-rolled steel coil, for example). Inventory flows include inputs of water, energy and raw materials, and subsequent outputs to air, soil and water. An LCI analysis is the first step in a lifecycle assessment (LCA ).

To develop the inventory, a flow diagram depicting the system is created using materials and energy input data, and emissions output data. Inventory flows can number in the hundreds, depending on the system boundary.