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Rijkswaterstaat 1 The use of Dubocalc and the CO2 performance ladder as instrument for GPP Jan van der Zwan and the CO2 performance ladder.

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Presentation on theme: "Rijkswaterstaat 1 The use of Dubocalc and the CO2 performance ladder as instrument for GPP Jan van der Zwan and the CO2 performance ladder."— Presentation transcript:

1 Rijkswaterstaat 1 The use of Dubocalc and the CO2 performance ladder as instrument for GPP Jan van der Zwan and the CO2 performance ladder

2 Rijkswaterstaat Contents What is Dubocalc (DC) How does it work DC in contracting What is the CO2 performance ladder How does it work in contracts

3 Rijkswaterstaat New Tools for sustainable procurement “CO2 ladder” Dubocalc pen

4 Rijkswaterstaat Dubocalc LCA based tool international standard based on materials and energy) Other environmental effects are taking into acount in an Environmental Impact Study Relevant international acceptance (relation to CPR basis requirement 7 (sustainability)

5 Rijkswaterstaat Objective DuBocalc comparison of tender-bids or variants DuboCalc calculates the environmental effects of the different infrastructure designs, based on material en energy use during the whole lifecycle RWS will use this LCA-instrument by judging the environmental impact of the bids DuboCalc consists of LCA-data (ISO 1440) and productdata Sustainable design as an awardingcriterium

6 Rijkswaterstaat What is DuboCalc? database (ISO 14040) with aspects (materials/processes) and environmental effects Software DuboCalc Projectinformation

7 Rijkswaterstaat Wat is DuboCalc: Duurzaam bouwen Calculator ? LCA calculator Tons of materials. Transportdistance Lifecycle of project Input (projectdesign) Output LCA Database Environmental cost calculator 11 environmental effects Environmental Cost Indicator (MKI) in € DuboCalc o.a. ton CO2 equiv.

8 Rijkswaterstaat DuboCalc standardisation LCA calculator Ontwerpspecs Selectie van processen: uniek voor DuboCalc Input Output National database Building materials Nationale database Environmental costs Nationale selection of Environmental effects Environmental costs (“MKI”) DuboCalc o.a. CO2-emission National platform SBK commissions NEN 8006 ISO 14040

9 Rijkswaterstaat 9 MilieuKostenIndicator (MKI) Materials and processes MilieueffectcategorieItemsEquivalentEnv. Cost (M/P)unit (kg) [€/kg equivalent] 1.Climate change5,8CO 2 eq€ 0,05 0,29 2.Effect on ozone layeretcCFK-11 eq€ 30,--etc 3.Human toxicity1,4-DCB eq€ 0,09 4.Ecological toxicity, sweet water1,4-DCB eq€ 0,03 5.Ecological toxicity, salt water1,4-DCB eq€ 0, Ecological toxicity, land1,4-DCB eq€ 0,06 7.Photochemical reactivity Smog)C 2 H 2 eq € 2,-- 8.AcidificationSO 2 eq€ 4,-- 9.Over fertilisationPO 4 eq € 9,-- 10.Depletion of non renewable materialsSb eq€ 0,16 11.Depletion of fossil fuelsSb eq€ 0,16 MKIXX DCB= dichloorbenzeen

10 Rijkswaterstaat 10 Items Four phases –Building (excavation, production, building) –use –Maintenance –demolition Contains materials and processes and end of life scenario (reuse, landfill et cetera)

11 Rijkswaterstaat 11 Optimalisation with DuboCalc Building/design –Choice of materials, amounts and transport distances* Use –energy Maintenance –Life, maintenance * *not in all cases, only where the environmental impact is distinguishing

12 Rijkswaterstaat 12 Design options: Environmental Cost Indicator (MKI)

13 Rijkswaterstaat DuboCalc in contracting Demand in contract: maximum MKI value Proces demand: design optimisation using DuboCalc –E.g. earth works Awardingscriterium (economical most valuable bit) : stimulation to a sustainable design –E.g. road constructions, works of art, earth works DuboCalc only when there is a possibility to design!!

14 Rijkswaterstaat For information and instruction: DuboCalc: Sustainable procurement with DuboCalc: Intranet RWS: inkopen

15 Rijkswaterstaat Instrumenten voor duurzaam inkopen en gunnen op waarde Senter-novem criteria als minimum niveau Ambitie RWS gaat verder: –CO2 prestatieladder –Dubocalc EMVI omgeving –Wat is duurzaamheid ons (RWS/maatschappij/SLA) waard? LCC moeten niet duurder uitvallen.

16 Rijkswaterstaat CO 2 performance ladder CO2 management in organisation and applied in projects 5 levels of Certification of company Low level: within own company High level: innovation with partners in supplychain Level is awarding criterium Will be applied in all contracts of RWS

17 Rijkswaterstaat 17 CO2 prestatieladder bedrijfsvoering organisatie


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