PAS2050标准英文版

PUBLICLYAVAILABLESPECIFICATIONPAS2050:2008SpecificationfortheassessmentofthelifecyclegreenhousegasemissionsofgoodsandservicesPAS2050:2008iContentsPageForeword................................................................................................................................ii0Introduction......................................................................................................................iv1Scope....................................................................................................................................12Normativereferences.................................................................................................13Termsanddefinitions.................................................................................................24Principlesandimplementation.............................................................................65Emissionsources,offsettingandunitofanalysis...................................76Systemboundary..........................................................................................................127Data.......................................................................................................................................178Allocationofemissions.............................................................................................229CalculationoftheGHGemissionsofproducts..........................................2410Claimsofconformity................................................................................................25AnnexesAnnexAGlobalwarmingpotential(normative)..........................................26AnnexBCalculationoftheweightedaverageimpactofemissionsarisingfromtheusephaseandfinaldisposalphaseofproducts(normative)............................................................................................................................29AnnexCCalculationoftheweightedaverageimpactofcarbonstorageinproducts(normative)..............................................................30AnnexDCalculationofemissionsarisingfromrecyclablematerialinputs(normative)............................................................................................................31AnnexEDefaultlandusechangevaluesforselectedcountries(normative)............................................................................................................................32Bibliography.........................................................................................................................34Furtherreading..................................................................................................................34PAS2050:2008iiIthasbeenassumedinthepreparationofthisPASthattheexecutionofitsprovisionswillbeentrustedtoacompetentpersonorpersonsforwhoseuseithasbeenproduced.Acknowledgementisgiventothefollowingorganizationsandindividualswhoassistedwiththedevelopmentofthisspecification:TechnicalauthorDrGrahamSindenOrganizations•CarbonTrust•Defra•BSIStandardsSolutions•E4tech•LEKConsulting•BoozAllenHamilton•OrionInnovationsPASSteeringGroupProfessorJimSkea(Chair)UKEnergyResearchCentreForewordThisPubliclyAvailableSpecification(PAS)hasbeenpreparedbyBSItospecifyrequirementsforassessingthelifecyclegreenhousegasemissions(GHG)ofgoodsandservices.ThedevelopmentofthisPASwasco-sponsoredbytheCarbonTrustandtheDepartmentforEnvironment,FoodandRuralAffairs(Defra).DrPaulJefferissIndependentexpert(andCarbonTrustDirector)ProfessorRolandCliftUniversityofSurreyProfessorTimJacksonUniversityofSurreyTerenceIlottUKDepartmentforEnvironment,FoodandRuralAffairsMarkKenberTheClimateGroupMichaelRoberts/RhianKellyConfederationofBritishIndustryStephenReesonUKFoodandDrinkFederationNickMonger-GodfreyJohnLewisplc.;ParkRoyalplc.NigelDickieHeinzUK&IrelandKenDouble/DanStaniaszekEnergySavingTrustPAS2050:2008iiiThisPAShasbeenpreparedandpublishedbyBSIwhichretainsitsownershipandcopyright.BSIreservestherighttowithdraworamendthisPASonreceiptofauthoritativeadvicethatitisappropriatetodoso.ThisPASwillbereviewedatintervalsnotexceedingtwoyears,andanyamendmentsarisingfromthereviewwillbepublishedasanamendedPubliclyAvailableSpecificationandpublicizedinUpdateStandards.ThisPASisnottoberegardedasaBritishStandard,EuropeanStandardorInternationalStandard.IntheeventthatthisPASisputforwardtoformthebasisofafullBritishStandard,EuropeanStandardorInternationalStandard,itwillbewithdrawn.PresentationalconventionsTheprovisionsofthisPASarepresentedinroman(i.e.upright)type.Itsrequirementsareexpressedinsentencesinwhichtheprincipalauxiliaryverbis“shall”.Itsrecommendationsareexpressedinsentencesinwhichtheprincipalauxiliaryverbis“should”.Commentary,explanationandgeneralinformativematerial,e.g.Notes,ispresentedinitalictype,anddoesnotconstituteanormativeelement.ContractualandlegalconsiderationsThispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewiththisPASdoesnotinitselfconferimmunityfromlegaloblig