1、BSISO20423:2025CarbonfootprintforseafoodProductcategoryrules(CFP-PCR)formacroalgaebsi.NationalforewordThisBritishStandardistheUKimplementationofISO20423:2025.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeW/-,MiscellaneousStandards.Alistoforganizationsrepresentedonthiscommitteecan
2、beobtainedonrequesttoitscommitteemanager.ContractualandlegalconsiderationsThispublicationhasbeenpreparedingoodfaith,howevernorepresentation,warranty,assuranceorundertaking(expressorimplied)isorwillbemade,andnoresponsibilityorliabilityisorwillbeacceptedbyBSIinrelationtotheadequacy,accuracy,completene
3、ssorreasonablenessofthispublication.Allandanysuchresponsibilityandliabilityisexpresslydisclaimedtothefullextentpermittedbythelaw.Thispublicationisprovidedasis,andistobeusedattherecipientsownrisk.Therecipientisadvisedtoconsiderseekingprofessionalguidancewithrespecttoitsuseofthispublication.Thispublic
4、ationisnotintendedtoconstituteacontract.Usersareresponsibleforitscorrectapplication.TheBritishStandardsInstitution2025PublishedbyBSIStandardsLimited2025ISBN9780539313772ICS67.120.30CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.ThisBritishStandardwaspublishedundertheauthority
5、oftheStandardsPolicyandStrategyCommitteeon30June2025.Amendments/corrigendaissuedsincepublicationDateTextaffectedBSISO20423:2025InternationalStandardISO20423Firstedition2025-06Carbonfootprintforseafood一Productcategoryrules(CFP-PCR)formacroalgaeEmpreintecarbonedesfruitsdemer-Regiesdedefinitiondescateg
6、oriesdeproduit(CFP-PCR)pourlesmacroalguesReferencenumberISO20423:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includi
7、ngphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPub
8、lishedinSwitzerlandContentsPageForewordvIntroductionvi1 Scope12 Normativereferences13 Termsanddefinitions13.1 Quantificationofthecarbonfootprintofaproduct13.2 Products,productsystemsandprocesses23.3 Dataanddataquality53.4 Greenhousegases53.5 Waste,storageandtransport54 Calculationandcommunicationreq
9、uirements65 Methodologicalrequirements65.1 General65.2 Functionalunitordeclaredunit65.3 Principlesofdataandmethodologicalreporting75.4 Systemboundaries75.4.1 General75.4.2 Thecut-offcriterion:Generalruleforwhatcanbeexcludedfromthecarbonfootprint85.4.3 Generalprocessesthatcanbeexcluded95.4.4 Systembo
10、undariesforwaste95.4.5 Useofrecycledmaterials95.4.6 Capitalinvestments95.4.7 Systemboundariesforfarming95.4.8 Systemboundariesforharvesting105.4.9 Systemboundariesforprocessing115.4.10 Systemboundariesfordistributiontodealers125.4.11 Systemboundariesforfinalconsumption.135.5 Datarequirements135.5.1
11、General135.5.2 Rulesfordatasampling145.5.3 Dataonelectricity145.5.4 Dataonfuel145.5.5 Geographicaldelimitation145.5.6 Timedelimitation145.5.7 Validationofdata145.5.8 Transportcalculationrules145.6 Allocation155.7 Impactassessment155.8 Interpretation155.9 Fossilandbiogeniccarbon165.10 Communicationof
12、carbonfootprintsformacroalgae165.10.1 General165.10.2 Detailsabouttheproducer16AnnexA(informative)Exampleofdatacollectioninthecalculationofthecarbonfootprintofmacroalgaeproducts17AnnexB(informative)Additionalinformationforfarmingnutrientsaccountingthroughelementalmassbalancesofmacroalgae18Annex C (i
13、nformative)Exampleofmassallocationforkelpco-productprocessing21Annex D (informative)ExampleofLCAdriedPorphyrayezoensisvalue-chainmodelling22Annex E (informative)ExampleofLCAgroundseaweedvalue-chainmodelling2425BibliographyForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederat
14、ionofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandn
15、on-governmentabinliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inpartic
16、ular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.isoQrgdirectives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtak
17、esnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.However,implementersarecautionedthatthismaynotrepresentthelatestinformation,whichmay
18、beobtainedfromthepatentdatabaseavailableatWWW.isoQrgpatents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspec
19、ifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISO/sadherencetotheWorldTradeOrganization(WTO)principlesintheTechnicalBarrierstoTrade(TBT),seeWWW.iso.org/iso/foreword.html.ThisdocumentwaspreparedbyTechnicalCommitteeISO/TC234,Fisheriesandaquaculture.Anyfeedbackorquestions
20、onthisdocumentshouldbedirectedtotheusersnationalstandardsbody.AcompletelistingofthesebodiescanbefoundatWWW.isoQrgmembnrs.htmLIntroductionWiththeincreasinglyseriousglobalclimateproblem,thelow-carbonrevolutionofglobalizationisrising,andcarbonpeakingandcarbonneutralityhavebecomeimportantgoalsofgloballo
21、w-carbondevelopment.Countriesallovertheworldareactivelycarryingoutdoublecarbonresearchtoachievethegoalofcarbonneutralityassoonaspossible.Asanimportantparticipantintheoceancarboncycle,algaecansynthesizeorganicmatterthroughphotosynthesisandreleaseoxygentoachievecarbonsequestration,soitisofgreatsignifi
22、cancetostudyitscarbonfootprint.Thisdocumentcontainsproductcategoryrulesforthecalculationandcommunicationofthecarbonfootprintofmacroalgaeproducts,providingaconvenientandfeasiblecarbonfootprintevaluationbasisforthemacroalgaefarmingindustry.Thisdocumentsetsoutrulesforthecalculationandcommunicationoffar
23、medmacroalgaeproducts,whichareapplicabletotheevaluationofthecarbonfootprintoftheentirevaluechainoffarmedmacroalgae.ThemethodologyisbasedontherequirementsofthelifecycleassessmentandInternationalStandardsforthecarbonfootprintofproducts.Theoverarchingaimofthedocumentistoprovideabasisforreliableandaccur
24、ateinformationabouttheclimateimpactoftheproduct.Itisapre-conditionforamarket-drivenreductionofclimateimpactofmacroalgaeproductsthatdealersandconsumersareabletochoosetheproductswiththeleastclimateimpact.Inadditiontothis,thedocumentwillprovide:一abasisforthedevelopmentoftoolsanddatabaseforcalculatingth
25、ecarbonfootprintofmacroalgaeproducts;一abasisforinternalimprovementeffortsinthemacroalgaeindustry;一animprovedknowledgebaseconcerningthevaluechainsofmacroalgaeproducts,theirresourceconsumptionandclimateimpacts;一abasisforfurtherunderstandingtheenvironmentalimpactofmacroalgaeproductsbeyondclimatechangea
26、lone.Thisdocumentisintendedtofunctioninlinewithordinarymarketmechanisms.Providingcredibleandtransparentinformationabouttheproductsclimateimpactwillpavethewayforincreaseddemandandmarketvalueofthemostclimate-friendlymacroalgaeproducts.Itwillalsoprovideincentivestodrivefurtherimprovementsandreduceenerg
27、yconsumptionandclimateimpactsfromalllinksinmacroalgaevaluechains.Thisdocumentpromotesthetransformationoftheglobalfisheryindustrystructureandtheinnovativedevelopmentoflow-carbontechnology,whichcancontributetorealizingtheconstructionoflow-carbonfisheryandincreasingthecarbonsinkoffishery,thusmakingduec
28、ontributiontothegloballow-carbondevelopment.CarbonfootprintforseafoodProductcategoryrules(CFP-PCR)formacroalgae1 ScopeThisdocumentspecifiesrequirementsforcalculatingthecarbonfootprintspecifictofarmedmacroalgaeproductcategoryrules(CFP-PCR).ThismethodologybuildsontherequirementsofInternationalStandard
29、sforlifecycleassessment(LCA)andproductscarbonfootprints.Thisdocumentisapplicabletothecalculationandcommunicationoffarmedmacroalgaeproductscarbonfootprintsfromseedlingproductiontotheconsumptionofmacroalgaeproducts.Itisapplicabletothecarbonfootprintsofproductsfromaquaculturevaluechains.Thisdocumentuse
30、dalonedoesnotapplytospecifyingaproductsoverallenvironmentalorsustainabilitycharacteristics.2 NormativereferencesThefollowingdocumentsarereferredtointhetextinsuchawaythatsomeoralloftheircontentconstitutesrequirementsofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,the
31、latesteditionofthereferenceddocument(includinganyamendments)applies.ISO14026:2017,EnvironmentallabelsanddeclarationsPrinciples,requirementsandguidelinesforcommunicationoffootprintinformationISO14040,EnvironmentalmanagementLifecycleassessmentPrinciplesandframeworkISO14044,EnvironmentalmanagementLifec
32、ycleassessmentRequirementsandguidelinesISO14067:2018,GreenhousegasesCarbonfootprintofproductsRequirementsandguidelinesforquantification3 TermsanddefinitionsForthepurposesofthisdocument,thefollowingtermsanddefinitionsapply.ISOandIECmaintainterminologydatabasesforuseinstandardizationatthefollowingaddr
33、esses:一ISOOnlinebrowsingplatform:availableathttps:WWW.iso.orgobp一IECElectropedia:availableathttps:WWW.electropedia.org/3.1 Quantificationofthecarbonfootprintofaproduct3.1.1carbonfootprintofaproductCFPsumofgreenhousegas(GHG)(341)emissionsandGHGremovalsinaproductsystem(3214),expressedasCO2equivalents(
34、3.1.2)andbasedonalifecycleassessmentusingthesingleimpactcategoryofclimatechangeSOURCE:ISO14067:2018,3.1,1.1,modified-Notes1and2toentrydeleted.3.1.2carbondioxideequivalentCO2equivalentCO#unitforcomparingtheradiativeforcingofagreenhousegas(3.4.1)tothatofcarbondioxideNote1toentry:MassofaGHGisconvertedi
35、ntoCOequivalentsbymultiplyingthemassoftheGHGbythecorrespondingglobalwarmingpotential(GWP)orglobaltemperaturechangepotential(GTP)ofthatgas.Note2toentry:InthecaseofGTP,COequivalentistheunitforcomparingthechangeinglobalmeansurfacetemperaturecausedbyaGHGtothetemperaturechangecausedbyCO2withinacertaintim
36、e(usually100years).Note3toentry:RadiativeforcingreferstodifferencebetweenincomingsolarradiationontheEarthandoutgoingthermalradiationfromtheEarth.Apositiveradiativeforcingtendstowarmthesurfaceandanegativeradiativeforcingtendstocoolthesurface.SOURCE:ISO14067:2018,3.122,modified一11withinacertaintime(us
37、ually100years),addedtoNote2toentry.Note3toentryadded.3.1.3partialcarbonfootprintofaproductpartialCFPsumofgreenhousegas(GHG)(3.4.1)emissionsandGHGremovalsofoneormoreselectedprocess(es)inaproductsystem(3214),expressedasCO2equivalents(3.1.2)andbasedontheselectedstagesorprocesseswithinthelifecycle(3.2.1
38、1)Note1toentry:ApartialCFPisbasedonorcompiledfromdatarelatedto（八）specificprocess(es)orfootprintinformationmodules,whichis(are)partofaproductsystemandcanformthebasisforquantificationofaCFP.MoredetailedinformationoninformationmodulesisgiveninISO14025:2006,5.4.Note2toentry:Footprintinformationmodules;i
39、sdefinedinISO14026:2017,3.1.4.Note3toentry:TheresultsofthequantificationofthepartialCFParedocumentedintheCFPstudyreportexpressedinmassofCO2equivalentperdeclaredunitf3.2.15).SOURCE:ISO14067:2018,3.1.1.23.2 Products,productsystemsandprocesses3.2.1productanygoodsorserviceSOURCE:ISO14050:2020,3.5,2322pr
40、oductcategorygroupofproducts(321)thathaveanequivalentfunction323primaryproductprimaryoutputofcommercialvaluefromaproductionprocessSOURCE:ISO22948:2020,3.2,33.2.4by-productsecondaryoutputfromaprocess,butofcommercialvalue,thatisproducedinadditiontoadefinedprimaryproduct(323)SOURCE:ISO22948:2020,3.2.43
41、2.5intermediategoodsrawmaterialsorsemi-finishedgoods,whichmayberecycledorrecovered,thatarefedintotheproductsystem(3.2.14)SOURCE:ISO22948:2020,3.2.5326capitalgoodsproducts(3.2.1)thatarenotusedupinconsumptionorproductionoverabriefperiodbutthatretaintheirfunctionoveralongertime3.2.7seafoodfood,ofwhich
42、asignificantproportionofthecontentderivesdirectlyfromanimalsorplantsthatliveinthesea,lakesorwatercoursesSOURCE:ISO22948:2020,3.2.73.2.8algaelargegroupofsingle-ormulti-cellulareukaryoticorganisms,whichusuallycontainchlorophyllorotherpigmentsNote1toentry:Algaeareusuallyaquaticandcapableofphotosynthesi
43、s.SOURCE:ISO6107:2021,3.21329macroalgaemacroscopiceukaryoticpluricellularorganismscomposedofsingledifferentiatedcellsabletoobtainenergyusingchromophoresNote1toentry:MacroalgaemainlyincludeRhodophyta,PhaeophytaandChlorophyta.Commonmacroalgaearekelp,laver,wakame,gulfweed,ulva,etc.SOURCE:EN17399:2020,3
44、24,modifiedNote1toentryadded.3.2.10edibleproductquantityofmacroalgaeandmacroalgaeproducts(3.2.1)asavailableforsalefromaretailer,excludingpackaging3.2.11lifecycleconsecutiveandinterlinkedstagesofaproductsystem(3.2.14),fromrawmaterialacquisitionorgenerationfromnaturalresourcestofinaldisposalSOURCE:IS
45、O14040:2006,3.13.2.12valuechainrangeofactivitiesorpartiesthatcreateorreceivevalueintheformofproducts(3.2.1)orservices3.2.13carbonfootprintofaproduct-productcategoryrulesCFP-PCRsetofspecificrules,requirementsandguidelinesforCFP(3.1.1)orpartialCFP(3.1.3)quantificationandcommunicationforoneormoreproduc
46、tcategories(3.2.2)SOURCE:ISO14067:2018,3.1.1.10,modified-Notes1and2toentrydeleted.3.2.14productsystemcollectionofunitprocesseswithelementaryandproductflows,performingoneormoredefinedfunctions,andwhichmodelsthelifecycle(3.2.10)ofaproduct(3.2.1)SOURCE:ISO14040:2006,3.283.2.15declaredunitquantityofapro
47、duct(3.2.1)foruseasareferenceunitinthequantificationofapartialcarbonfootprintofaproduct(CFP)(3.1.3)EXAMPLEMass(1kgofprimarysteel),volume(1m3ofcrudeoil).SOURCE:ISO14067:2018,3.1.3.83.2.16functionalunitquantifiedperformanceofaproductsystem(3.2.14foruseasareferenceunitNote1toentry:Asthecarbonfootprinto
48、faproduct(CFP)(3.1.1)treatsinformationonaproduct(3.2.1)basis,anadditionalcalculationbasedonadeclaredunit(3215)canbepresented.SOURCE:ISO14067:2018,3.1.3.73.2.17allocationpartitioningtheinputoroutputflowsofaprocessoraproductsystem(3.2.14betweentheproductsystemunderstudyandoneormoreotherproductsystemsSOURCE:ISO14040:2006,3.173.2.1
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