BS ISO 20423 2025.docx

BSISO20423:2025CarbonfootprintforseafoodProductcategoryrules(CFP-PCR)formacroalgaebsi.NationalforewordThisBritishStandardistheUKimplementationofISO20423:2025.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeW/-,MiscellaneousStandards.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitscommitteemanager.ContractualandlegalconsiderationsThispublicationhasbeenpreparedingoodfaith,howevernorepresentation,warranty,assuranceorundertaking(expressorimplied)isorwillbemade,andnoresponsibilityorliabilityisorwillbeacceptedbyBSIinrelationtotheadequacy,accuracy,completenessorreasonablenessofthispublication.Allandanysuchresponsibilityandliabilityisexpresslydisclaimedtothefullextentpermittedbythelaw.Thispublicationisprovidedasis,andistobeusedattherecipientsownrisk.Therecipientisadvisedtoconsiderseekingprofessionalguidancewithrespecttoitsuseofthispublication.Thispublicationisnotintendedtoconstituteacontract.Usersareresponsibleforitscorrectapplication.©TheBritishStandardsInstitution2025PublishedbyBSIStandardsLimited2025ISBN9780539313772ICS67.120.30CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30June2025.Amendments/corrigendaissuedsincepublicationDateTextaffectedBSISO20423:2025InternationalStandardISO20423Firstedition2025-06Carbonfootprintforseafood一Productcategoryrules(CFP-PCR)formacroalgaeEmpreintecarbonedesfruitsdemer-Regiesdedefinitiondescategoriesdeproduit(CFP-PCR)pourlesmacroalguesReferencenumberISO20423:2025(en)COPYRIGHTPROTECTEDDOCUMENT©ISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordvIntroductionvi1 Scope12 Normativereferences13 Termsanddefinitions13.1 Quantificationofthecarbonfootprintofaproduct13.2 Products,productsystemsandprocesses23.3 Dataanddataquality53.4 Greenhousegases53.5 Waste,storageandtransport54 Calculationandcommunicationrequirements65 Methodologicalrequirements65.1 General65.2 Functionalunitordeclaredunit65.3 Principlesofdataandmethodologicalreporting75.4 Systemboundaries75.4.1 General75.4.2 Thecut-offcriterion:Generalruleforwhatcanbeexcludedfromthecarbonfootprint85.4.3 Generalprocessesthatcanbeexcluded95.4.4 Systemboundariesforwaste95.4.5 Useofrecycledmaterials95.4.6 Capitalinvestments95.4.7 Systemboundariesforfarming95.4.8 Systemboundariesforharvesting105.4.9 Systemboundariesforprocessing115.4.10 Systemboundariesfordistributiontodealers125.4.11 Systemboundariesforfinalconsumption.135.5 Datarequirements135.5.1 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 Communicationofcarbonfootprintsformacroalgae165.10.1 General165.10.2 Detailsabouttheproducer16AnnexA(informative)Exampleofdatacollectioninthecalculationofthecarbonfootprintofmacroalgaeproducts17AnnexB(informative)Additionalinformationforfarmingnutrientsaccountingthroughelementalmassbalancesofmacroalgae18Annex C (informative)Exampleofmassallocationforkelpco-productprocessing21Annex D (informative)ExampleofLCAdriedPorphyrayezoensisvalue-chainmodelling22Annex E (informative)ExampleofLCAgroundseaweedvalue-chainmodelling2425BibliographyForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmentabinliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.isoQrgdirectives).ISOdrawsattentiontothepossibilitythattheimplement