1. A Framework for Environmental Performance Evaluation in Green Supply Chains Gabriel Alves Jr. gaaj@cin.ufpe.br

2. Summary Motivation Objectives Proposal Case Study Links References

3. Objectives Provide a Framework for EPE in GSCs –Component-based Models, Metrics, Tools Single model for EPE and Performance Evaluation –Products Flow –Dynamics of LCA Compare Environment, Performance and Costs trade-offs

4. Introduction Exergy –Energetic Efficiency (depends on the source and the system) –Allows comparing different energy sources Global Warming Potential (GWP) –Allows comparing different resources with the CO 2 environment impacts –Covers the destination and origin of resources

5. Evaluation of sustainability and performance metrics in supply chains with SRNs Proposal Models Tools Metrics Framework

6. Environment Performance Indicators (EPI) Classification Proposal Sustainability Indicator Objective Subjective Objective Subjective Objective Subjective Environmental Economic Social Objective

7. Proposal Metrics –Graphical Schema –Exergy Energy Consumption –GWP Waste Energy consumption separately

8. Proposal Metrics (Performance) –Resources Utilization/Availability; –Stock Availability; –Pending orders; –Replenishment policies impacts; –Machine/trucks failure impacts;

9. Proposal Metrics (EPE) –Absolute/relative electricity consumption (kWh); –Absolute/relative fuel consumption classified by type (diesel, gas, ethanol…) (l, m 3 …); –Absolute/relative exergy consumption (J);

10. Proposal Metrics (EPE) –Absolute/relative waste classified by type (paper, ferrous, wood, organic…) and destination (composting, recycling, disposal); –Absolute/relative amount of CO2 emissions in transportation and manufacturing activities; –Absolute/relative amount of CO2eq (GWP) emissions.

11. Proposal Producer Intermediary Transport Final Consumer Models Components –Inbound, Outbound (Pull/Push) and Reverse –Manufacturing (Desrochers)

12. Models x Environment Parameters Proposal Element InputsOutputs Waste, CO 2 Resources, Energy Waste, CO 2 Resources, Energy WasteResources, Energy Waste, CO 2 Resources, Energy

13. Failures Proposal Al-JaarProposal

14. Case Study Model –Scenario 1: no failures Rates: tp_PRC_0=0.005172 tp_PRC_1=0.008768 tp_PRC_2=0.010601

15. Case Study Model –Scenario 3: failures and; ∞ team Rates: tMTTR_FLTR_0=1.4413 tMTTR_FLTR_1=2.1107 tMTTR_FLTR_2=1.4798 tMTBF_FLTR_0=223.0 tMTBF_FLTR_1=45.84 tMTBF_FLTR_2=32.184028 Guards tp_PRC_0=#pOk_FLTR_0>0tMTBF_FLTR_0=[tp_PRC_0> tp_PRC_1=#pOk_FLTR_1>0tMTBF_FLTR_0=[tp_PRC_1> tp_PRC_2=#pOk_FLTR_2>0tMTBF_FLTR_0=[tp_PRC_2> Weight T0=0.9011 T1=0.0989

16. Case Study Model –Scenario 2: failures and; 1 team Guards tRepair_FLTR_0=tRepair_FLTR_1=tRepair_FLTR_2: #pRepair_FLTR_0+#pRepair_FLTR_1+#pRepair_FLTR_2<1

17. Production Line Indicators Case Study

18. Production Line Indicators Case Study

19. Production Line Indicators Case Study

20. Production Line Indicators Case Study

21. Production Line Indicators Case Study *Considered same machines efficiency independent of the fuel Variation (%) Same Efficiency (Brazil) Same Efficiency (Europe) Estimated Efficiency (Brazil) Estimated Efficiency (Europe) GWP Variation with Single Energy Source

22. Production Line Indicators Case Study GWP Using Natural Gas and Varying Exergy Output and Exergetic Efficiency Xout variation (%) η II variation (%) GWP (kgCO 2 eq)

23. Links Intergovernamental Panel on Climate Change (IPCC): http://www.ipcc.ch/http://www.ipcc.ch/ United States Environmental Protection Agency (EPA): http://www.epa.gov/http://www.epa.gov/ –http://www.epa.gov/climatechange/http://www.epa.gov/climatechange/ Energy Information Administration (EIA, US): http://www.eia.doe.gov/http://www.eia.doe.gov/ Department for Environment, Food and Rural Affairs (DEFRA, UK): http://www.defra.gov.uk/http://www.defra.gov.uk/ Carbon Trust, UK: http://www.carbontrust.co.uk/http://www.carbontrust.co.uk/ Ministério de Minas e Energia (MME, BR): http://www.mme.gov.br/http://www.mme.gov.br/ Ministério de Ciência e Tecnologia (MCT, BR): http://www.mct.gov.br/http://www.mct.gov.br/ World Energy Council: http://www.worldenergy.org/http://www.worldenergy.org/ Green Peace: http://www.greenpeace.org/http://www.greenpeace.org/ –http://www.greenpeace.org.br/http://www.greenpeace.org.br/

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