Novara Environmental Statement 2007 English MEMC-NO ...
Novara Environmental Statement 2007 English MEMC-NO ... Novara Environmental Statement 2007 English MEMC-NO ...
ProductionFor the correct interpretationof the progress of environmentalaspects, that mentioned inthe introduction regarding siliconwafer manufacturing trendsshould be taken into account.To this aim, the graph shown illustratesthe trend in silicon manufacturing,which for 2007 considerssilicon produced for theelectronics industry and for solarphotovoltaics in terms of thepercentage variation comparedto production values for the year2000, chosen as the referenceyear. In fact, the datum relatedto the production of silicon for theelectronics and solar photovoltaicsmarket was considered as thereference datum for the calculationof the specifi c environmentalperformance values indicatedhere below. In fact, silicon hasbeen considerably important forthe solar photovoltaics marketsince 2006.On analysis, in line with the economiccontext described previously,the production data showsthat silicon manufacturing for theelectronics market fell slightly in2007 compared to the years immediatelybefore, however saidfall was compensated by productionvalues related to siliconmanufactured for the solar photovoltaicsmarket, therefore theproduction of silicon for the electronicsand solar photovoltaics industriesin 2007 showed an overallincrease of 131% comparedto the year 2000.Silicon wafers productionYear(%)2000100200179200210020031102004130200512320061452007131Silicon wafers productionANNUAL PRODUCTION QUANTITY (MSIEreferred to 1997, Cconsidered as base year)2001801601401201008060402002000 2001 2002 2003 2004 2005 2006 2007YEARSilicon for the electronicsSilicon for the solar photovoltaicsSilicon for the electronics and solar photovoltaicsSilicon has been considerablyimportant for the solar photovoltaicsmarket since 2006.14
Energy consumptionThe main source of energy for thesite in Novara is electricity suppliedby a trigeneration plant builtin 2006 and put into operationin the fi rst quarter of 2007. Saidplant, powered by natural gas(methane), meets all of the site’senergy requirements in terms ofelectricity and steam and 2/3 ofthe frigories required for the productionof cold water. The processesthat consume the highestamounts of electricity are: airconditioningsystems for the clean-rooms(about 30% of the totalamount), the polishing departmentand the epitaxy department(about 20% of the total amount).The site also uses steam for theair-conditioning system, alsosupplied from the trigenerationplant, and to a small degreemethane for drying mud derivingfrom waste purifi cation and dieselfor internal goods handling.Energy consumption values forthe single sources and the totalvalue are proposed in absoluteterms (toe:tonne of oil equiva-lent) and specifi c terms, in otherwords related to the annualamount of silicon produced formicroelectronics and solar photovoltaics(expressed in MSIE:million square inch equivalent).2007 saw a reduction in absoluteenergy consumption mainly causedby a fall in production, but alsothanks to the completion of plannedimprovement actions, mostimportantly activation of the trigenerationplant designed to meetthe sites energy requirements.Said plant, powered by methane,offers improved energy effi ciencyand at the same time a considerablereduction in carbon dioxideemissions to the atmosphere,as shown in the following graph.Another completed project thathas provided considerable energysavings (about 1 million kWhper year) is the optimisation of thecompressed air production plant.The downward trend seen in specificenergy consumption over thelast few years is proof of the company’scommitment to implementincreasingly more energy efficientproduction processes.Energy consumptionTOTAL CONSUMPTION (tep/year)Total energy consumption Steam Electrical energy Oil & MethanYear tep tep/MSIE tep tep tep2000 18482 106 3003 15269 2102001 18015 131 3185 14725 1052002 18409 107 3356 14950 1032003 19087 100 3417 15576 932004 19818 88 3432 16192 1942005 19208 90 3637 15435 1352006 19556 78 3493 15831 2322007 17474 77 3519 13762 193tep = equivalent tons of petroleum oilMSIE = million square inches equivalent20.00018.00016.00014.00012.00010.0008.0006.0004.0002.00002000 2001 2002 2003 2004 2005 2006 2007YEARSteamElettrical energyOil&MethanTotal energy consumptionSpecifi c consumption1401301201101009080706050SPECIFIC CONSUMPTION (tep/MSIE)15
- Page 1 and 2: ABSTRACT OFENVIRONMENTAL STATEMENT2
- Page 3 and 4: 01IntroductionMEMC’s Novara site
- Page 5 and 6: Novara siteMEMC Electronic Material
- Page 7 and 8: A look at the historyThe constructi
- Page 9 and 10: 04EnvironmentalPolicyMEMC’s Healt
- Page 11 and 12: 06TheEnvironmental Management Syste
- Page 13: 08Quantification of the Environment
- Page 17 and 18: Total water consumption - industria
- Page 19 and 20: Consumption ofauxiliary materialsVa
- Page 21 and 22: Consumption of chemical sustances:P
- Page 23 and 24: Emissions intothe atmosphereThe pro
- Page 25 and 26: Emissions into the atmosphere- Nitr
- Page 27 and 28: Emission of CarbonDioxide Equivalen
- Page 29 and 30: YearLimit by LawDLgs 152/0620002001
- Page 31 and 32: WasteThe total waste production val
- Page 33 and 34: Areas covered by reclaiming planM2M
- Page 35 and 36: EXTERNAL TRANSPORTWith regards to t
- Page 37 and 38: 09EnvironmentalImprovement Actions:
- Page 39 and 40: 2008 - 2011 ENVIRONMENTAL PROGRAMOb
- Page 41 and 42: Free translation of abstract fromEn
ProductionFor the correct interpretationof the progress of environmentalaspects, that mentioned inthe introduction regarding siliconwafer manufacturing trendsshould be taken into account.To this aim, the graph shown illustratesthe trend in silicon manufacturing,which for <strong>2007</strong> considerssilicon produced for theelectronics industry and for solarphotovoltaics in terms of thepercentage variation comparedto production values for the year2000, chosen as the referenceyear. In fact, the datum relatedto the production of silicon for theelectronics and solar photovoltaicsmarket was considered as thereference datum for the calculationof the specifi c environmentalperformance values indicatedhere below. In fact, silicon hasbeen considerably important forthe solar photovoltaics marketsince 2006.On analysis, in line with the economiccontext described previously,the production data showsthat silicon manufacturing for theelectronics market fell slightly in<strong>2007</strong> compared to the years immediatelybefore, however saidfall was compensated by productionvalues related to siliconmanufactured for the solar photovoltaicsmarket, therefore theproduction of silicon for the electronicsand solar photovoltaics industriesin <strong>2007</strong> showed an overallincrease of 131% comparedto the year 2000.Silicon wafers productionYear(%)200010020017920021002003110200413020051232006145<strong>2007</strong>131Silicon wafers productionANNUAL PRODUCTION QUANTITY (MSIEreferred to 1997, Cconsidered as base year)2001801601401201008060402002000 2001 2002 2003 2004 2005 2006 <strong>2007</strong>YEARSilicon for the electronicsSilicon for the solar photovoltaicsSilicon for the electronics and solar photovoltaicsSilicon has been considerablyimportant for the solar photovoltaicsmarket since 2006.14
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