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# simapro - tutorial - Tutorial Exercise LCA Software SimaPro...

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Page 1 of 15 Tutorial Exercise LCA Software SimaPro 7.0 Introduction SimaPro is based on the Life Cycle Assessment (LCA) method - currently the most widely accepted way to assess the environmental impact of products. The following tutorial sessions are aimed at providing you the first-hand experience to conduct LCA by using SimaPro 7.0. The tutorial session attempts to guide you through the steps to build up a LCA scenario in SimaPro. 1. Entering product data 2. Entering production data 3. Develop waste treatments /scenarios 4. Establish life cycles 5. Generate Results/Charts for Impact Assessments 1.0 Life Cycle Assessment of a Wooden Shed – Problem Description / Overview We will take a simple wooden shed as example for conducting LCA. The details are as under: 1. The shed is made of two materials: wood and steel for the nails and other metal parts. 2. The wood is obtained by felling of trees. 3. In this example, assume that at the end-of-life of the shed, 100% of the wood is burned in open fireplaces. 4. Once finished the production and the end of life, we will develop the specification of the shed and the life cycle. 5. Assume that there is NO packaging, NO wood preservation or paint. 1.1 Felling the tree – Process Description The first step describes the felling of the tree from forest. 1,25 ton of wood is felled to produce a tree trunk of 1 ton, the rest (branches and tops) is left in the forest, assume these branches and top do not cause emissions. A chainsaw is used for felling the trees. The chain saw data provided in the example are specified as impact per hour with a production rate of 25 ton of wood per hour, which means that for 1.25 ton. Therefore, time required to process 1.25 ton of wood would be: = (1.25 / 25)*60 ton - means 3 minutes are required to fell a tree with the chainsaw.

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Page 2 of 15 Follow the steps below to enter the data, Step 1: click on Processes in the explorer window. Step 2: click on the category Wood. Step 3: click new. An empty process record would appear on your screen. 1.2 Entering process outputs (products – Felled Trees) Follow the four steps shown in the figure: 1. Click the “known outputs to technosphere. Products and co-products”. 2. Enter the text “Felled tree” under “Name”. 3. Enter the Qty. “1” under ‘Amount’. 4. Double click in the field under “unit” and select “ton” from a top-down menu. Step 1 Step 2 Step 3
Page 3 of 15 1.3 Entering known inputs from Nature (Resources) & Technosphere The next section describes the inputs to the process. The data about the amount of wood extracted from forests have to be entered. 1. Known inputs from nature (resources). The resources that are directly taken from natural resources. Natural Resources describe the processes of mining, the ore or metal input. These data here will be included in the inventory result table.

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simapro - tutorial - Tutorial Exercise LCA Software SimaPro...

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