ISO／FDIS 17225-4：2020.docx

FINA1DRAFTINTERNATIONA1ISO/FDISSTANDARD17225-4ISOTC238Secretariat:SISVotingbeginson:202310-12Votingterminateson:2023-12-07So1idbiofue1sFue1specificationsandc1asses一Part4:GradedwoodchipsBiocombiistib1esso1ides-C1assesetspecificationsdescombustib1es一Partie4:C1assesdep1aquettesdeboisISO/CENPARA11E1PROCESSINGReferencenumberISO/FDIS17225-4:2023(E)RECIPIENTSOFTHISDRAFTAREINVITEDTOSUBMIT.WITHTHEIRCOMMENTS.NOTIFICATIONOFANYRE1EVANTPATENTRIGHTSOFWHICHTHEYAREAWAREANDTOPROVIDESUPPORTINGDOCUMENTATIONINADDITIONTOTHEIREVA1UATIONASbeingAcceftab1eforindustria1techno1ogica1.COMMERCIA1ANDUSERPURPOSES.DRAFTINTERNATIONA1STANDARDSMAYONOCCASIONHAVETOBECONSIDEREDINTHE1IGHTOFTHEIRPOTENTIA1TOBECOMESTAN.DARDSTOWHICHREFERENCEMAYBEMADEINNATIONA1REGU1ATIONSCOPYRIGHTPROTECTEDDOCUMENT©ISO2023A11rightsreserved.Un1essotherwisespecified,orrequiredinthecontextofitsimp1ementation,nopartofthispub1icationmaybereproducedoruti1izedotherwiseinanyformorbyanymeans,e1ectronicormechanica1,inc1udingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbe1oworISO'smemberbodyinthecountryoftherequesterISOcopyrightofficeCP401Ch.deB1andonnet8CH1214Vernier;GenevaPhone:*41227490111Emai1:copyrightiso.orgWebsite:www.iso.orgPub1ishedinSwitzer1andPageContentsForewordIntroduction2Nc)rmatvereferences14Symbo1sandabbreviatedterms2jfjCatjcfra«1?«1Wo)CIAnnexA(informative)Genera1guide1inesforbu1kdensityofgradedwoodchips7ForewordISO(theInternationa1OrganizationforStandardization)isawor1dwidefederationofnationa1standardsbodies(ISOmemberbodies).TheworkofpreparingInternationa1Standardsisnorma11ycarriedoutthroughISOtechnica1committees.Eachmemberbodyinterestedinasubjectforwhichatechnica1committeehasbeenestab1ishedhastherighttoberepresentedonthatcommittee,internationa1organizations,governmenta1andnon-governmenta1,in1iaisonwithISO,a1sotakepartinthework.ISOco11aboratesc1ose1ywiththeInternationa1E1ectrotechnica1Commission(IEC)ona11mattersofe1ectrotechnica1standardization.Theproceduresusedtodeve1opthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticu1ar,thedifferentapprova1criterianeededforthedifferenttypesofISOdocumentsshou1dbenoted.Thisdocumentwasdraftedinaccordancewiththeeditoria1ru1esoftheISO/IECDirectives,Part2(seeWWW,isoQigdiecUves).Attentionisdrawntothepossibi1itythatsomeofthee1ementsofthisdocumentmaybethesubjectofpatentrights.ISOsha11notbehe1dresponsib1eforidentifyinganyora11suchpatentrights.Detai1sofanypatentrightsidentifiedduringthedeve1opmentofthedocumentwi11beintheIntroductionand/orontheISO1istofpatentdec1arationsreceived(seeWWW.iso.org/patents).Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexp1anationofthevo1untarynatureofstandards,themeaningofISOspecifictermsandexpressionsre1atedtoconformityassessment,aswe11asinformationaboutISO'sadherencetotheWor1dTradeOrganization(WTO)princip1esintheTechnica1BarrierstoTrade(TBT),seewww.iso.org/iso/foreword.htm1.ThisdocumentwaspreparedbyTechnica1CommitteeTC238,So1idbiofue1s.Thissecondeditioncance1sandrep1acesthefirstedition(ISO17225-4:2014),whichhasbeentechnica11yrevised.Themainchangescomparedtothepreviouseditionareasfo11ows: partic1esizedistributionc1assificationupdated; moistureandashcontentc1assesupdated; ArmeXAupdated.A1istofa11partsintheISO17225seriescanbefoundontheISOwebsite.Anyfeedbackorquestionsonthisdocumentshou1dbedirectedtotheuser,snationa1standardsbody.Acomp1ete1istingofthesebodiescanbefoundatWWWjSOQrg/members.htm1.IntroductionTheobjectiveoftheISO17225seriesistoprovideunambiguousandc1earc1assificationprincip1esforso1idbiofue1s;toserveasatoo1toenab1eefficienttradingofso1idbiofue1s;toenab1egoodunderstandingbetweense11erandbuyeraswe11asatoo1forcommunicationwithequipmentmanufacturers.Ita1sofaci1itatesauthoritypermissionproceduresandreportingR.Thisdocumentsupportstheuseofgradedwoodchipsforsma11andmediumresidentia1,commercia1andpub1icbui1dingapp1ications.Dependingonthetypeofenergyconversiontechno1ogyused(boi1ers,heaters,gasifiers,etc.,theto1erancesforaparticu1arqua1ityofwoodchipswi11bedifferent.Sca1esofapp1icationsandtheirtypica1operationrange: be1ow100kW(Residentia1); from75to500kW(Sma11;e.g.residentia1,pub1icandcommercia1bui1dings); from500kWto1,5MW(Medium;pub1icandcommercia1bui1dings); 1,5MWto5MW(1arge;sma11industria1faci1itiesanddistrictheating); over5MW(Industria1;recommendedtouseISO17225-1or1SOTS17225-9)Thesca1eusedforgroupingtheapp1icationsuti1izingwoodchipsisfori11ustrationon1yandinpractice,someover1apsbetweentheapp1icationsandthesca1esareexpected.Theresidentia1,sma11andmediumcommercia1andpub1icbui1dingapp1icationsrequirehighqua1ityfue1forthefo11owingreasons: Sma11-sca1eequipmentusua11ydoesnothaveadvancedcontro1sandf1uegasc1eaning. App1iancesarenotgenera11ymanagedbyprofess