RecommendationsontheTRANSPORTOFDANGEROUSGOODSModelRegulationsTwelfthrevisededitionUNITEDNATIONS-i-CONTENTSPageRECOMMENDATIONSONTHETRANSPORTOFDANGEROUSGOODS.....................1Nature,purposeandsignificanceoftheRecommendations...........................................1Principlesunderlyingtheregulationonthetransportofdangerousgoods.........................2Classificationanddefinitionsofclassesofdangerousgoods.........................................2Consignmentprocedures....................................................................................3Emergencyresponse.........................................................................................3Complianceassurance........................................................................................3Transportofradioactivematerial..........................................................................4Figure1:DatasheettobesubmittedtotheUnitedNationsforneworamendedclassificationofsubstances........................................................5ANNEX:MODELREGULATIONSONTHETRANSPORTOFDANGEROUSGOODS......9Tableofcontents..............................................................................................13Part1:Generalprovisions,definitionsandtraining.................................................21Part2:Classification......................................................................................39Part3:DangerousGoodsListandlimitedquantitiesexceptions..................................145Part4:Packingandtankprovisions....................................................................293Part5:Consignmentprocedures........................................................................413Part6:Requirementsfortheconstructionandtestingofpackagings,intermediatebulkcontainers(IBCs),largepackagingsandportabletanks.............................447Part7:Provisionsconcerningtransportoperations..................................................615APPENDICES...................................................................................................631AppendixA:ListofgenericandN.O.S.propershippingnames................................633AppendixB:Glossaryofterms.........................................................................651ALPHABETICALINDEXOFSUBSTANCESANDARTICLES......................................663-ii-TABLEOFCORRESPONDENCEbetweenparagraphnumbersintheIAEARegulationsfortheSafeTransportofRadioactiveMaterial,1996Edition(Revised),SafetyStandardsSeriesNo.TS-R-1(ST-1,Revised),andthetwelfthrevisededitionoftheRecommendationsontheTransportofDangerousGoods(includingtheModelRegulations)................................729-1-RECOMMENDATIONSONTHETRANSPORTOFDANGEROUSGOODSNATURE,PURPOSEANDSIGNIFICANCEOFTHERECOMMENDATIONS1.TheseRecommendationshavebeendevelopedbytheUnitedNationsEconomicandSocialCouncil'sCommitteeofExpertsontheTransportofDangerousGoodsinthelightoftechnicalprogress,theadventofnewsubstancesandmaterials,theexigenciesofmoderntransportsystemsand,aboveall,therequirementtoensurethesafetyofpeople,propertyandtheenvironment.Theyareaddressedtogovernmentsandinternationalorganizationsconcernedwiththeregulationofthetransportofdangerousgoods.Theydonotapplytothetransportofdangerousgoodsinbulkwhich,inmostcountries,issubjecttospecialregulations.2.TherecommendationsconcerningthetransportofdangerousgoodsarepresentedintheformofModelRegulationsontheTransportofDangerousGoods,whicharepresentedasannextothisdocument.TheModelRegulationsaimatpresentingabasicschemeofprovisionsthatwillallowuniformdevelopmentofnationalandinternationalregulationsgoverningthevariousmodesoftransport;yettheyremainflexibleenoughtoaccommodateanyspecialrequirementsthatmighthavetobemet.Itisexpectedthatgovernments,intergovernmentalorganizationsandotherinternationalorganizations,whenrevisingordevelopingregulationsforwhichtheyareresponsible,willconformtotheprincipleslaiddownintheseModelRegulations,thuscontributingtoworldwideharmonizationinthisfield.Furthermore,thenewstructure,formatandcontentshouldbefollowedtothegreatestextentpossibleinordertocreateamoreuser-friendlyapproach,tofacilitatetheworkofenforcementbodiesandtoreducetheadministrativeburden.Althoughonlyarecommendation,theModelRegulationshavebeendraftedinthemandatorysense(i.e.,thewordshallisemployedthroughoutthetextratherthanshould)inordertofacilitatedirectuseoftheModelRegulationsasabasisfornationalandinternationaltransportregulations.3.ThescopeoftheModelRegulationsshouldensuretheirvalueforallwhoaredirectlyorindirectlyconcernedwiththetransportofdangerousgoods.Amongstotheraspects,theModelRegulationscoverprinciplesofclassificationanddefinitionofclasses,listingoftheprincipaldangerousgoods,generalpackingrequirements,testingprocedures,marking,labellingorplacarding,andtransportdocuments.Thereare,inaddition,specialrequirementsrelatedtoparticularclassesofgoods.Withthissystemofclassification,listing,packing,marking,labelling,placardinganddocumentationingeneraluse,carriers,consignorsandinspectingauthoritieswillbenefitfromsimplifiedtr