WPCr Q;F}̬vR>[VNnu.&F2MS*IKa8¥,#>} >epA-=mi!t%y ±suzC`9;MQ.A~hqcm9pJK%֦G3lVj{)HIk#lLEE\Mt1,T\vy%9/V m9ud%`JLt:J Lzb-{$YHY\2GzpduD++Py .+o5We|C|y~0d䏏npt!!Ym?=tf)*L`6ϟR2md2ڌprSAb嫉7Ka2ɼO$BH= 8!/-pǵ[}|r(eJ9ķ_h5T *9T!UB % 0 0t= 0 0 0\q G 0w@4 0;UB 1e0 1Un 0ro 1moU0U* U<6\  `*Times New RomanTT'  ST/SG/AC.10/C.3/1997/INF. Ed de Jong0UN/ECE .   H4heading 1heading 1&    XXXW\  `*Times New RomanTTW     UK  US     &&&W\  `*Times New RomanTTW'  h:Default ParaDefault Paragraph FontXXXW\  `*Times New RomanTTW        &&&W\  `*Times New RomanTTW<D`.headerheader        ??  US     >4X` hp x (#><D`.footerfooter        ??  US     >4X` hp x (#>P8page numberpage numberXXXW\  `*Times New RomanTTW        &&&W\  `*Times New RomanTTW =  '&^&&^&&&^     ! X!    ??US.,  ''Q%  ST/SG/AC.10.C3/1999/INF.  BBQ%  page US.,??.,    $ X$  XcX&&^XcXXXc      &^&XXc@    1  A         &^&&&^&^&&&^   USUS.,    H4X` hp x (#XH  ?+  a  iq!yX?(e2$ !&&&&&&   lDmwyUzU{U|U}U~UTȊ&\dn  '&^&&^&&&^   UN/SCETDG/16/INF.9  page  2  (e2$ !&&&&&&     '&^&&^&&&^   UN/SCETDG/16/INF.9  page  2  \  `*Times New RomanTT$35;AGMSY_11.1.1.1.1.1.1.1.$359=AEIMQ2--------3|x\  `*Times New RomanTTC\  P6QP\  `*Times New RomanTT&&J\  P6Q&P\  `*Times New RomanTTXXP\  P6QXP(J$&&&&&&  # e37=CIQYag1.a.i.(1)(a)(i)1)a)2 `CG Times%2A`Arial\  `$Times NewRoman !&^&&^&&&^   TRW\6&3'6&A43'T       UKUS., &J&&&^XNX&&JԀ   M  U     #&J&XXN_#>&&J# >@#N  UN/SCETDG/16/INF9#  N9##&^& #XcX&&^ XcXXXc  # &^&X Xc# ??& &^COMMITTEEOFEXPERTSONTHE =x TRANSPORTOFDANGEROUSGOODS#??? ?#Sub-CommitteeofExpertsonthe 0 TransportofDangerousGoods(Sixteenthsession,Geneva,July5-16,l999,  agendaitem5(a)ii)   MISCELLANIOUSDRAFTAMENDMENTSTOTHEMODELREGULATIONS A |  ONTHETRANSPORTOFDANGEROUSGOODSExplosives    CreationofaNewEntryAmmoniumNitrateEmulsionMatrixTransmittedbyOECDIGUS  !\   Introduction   * XX*1.0 E AtthetwentiethsessionoftheCommitteeofExperts,Francetransmittedapaper  (ST/SG/AC.10/1998/45)proposinganewentryfor ammoniumnitrateemulsionmatrix.TheNetherlandstransmittedaninformationpaper(ST/SG/AC.10/1998/INF.21)proposingtoincludethesubjectontheprogrammeofworkforthe1999/2000bienniumoftheCommittee,sincenocriteriaaregivenonwhichtobasetoexclusionfromClass1,whilethepropertiesoftheemulsioncanvaryconsiderably.Becauseoflackoftime,agendaitem2(d)ofthe20thsessionwasnotdiscussed.Itwas  decidedthatallscheduledsubjectsareincludedintheCommitteesworkprogramme,providedrelevantproposalsaresubsequentlytransmitted. E#E# 2.0 E From17to21May1999,twoworkinggroupsoftheOECDInternationalGroupofexpertsonthe M explosionrisksofUnstableSubstances(OECDIGUS)metinStockholm,Sweden.ThoseweretheWorkingGrouponEnergeticandOxidisingSubstances(EOS)andtheWorkingGrouponExplosives,PropellantsandPyrotechnics(EPP).Ajointsessiontodiscussammoniumnitrateissues(fertilisers,emulsionmatrices)washeldaswell.About30expertsfromindustry,authoritiesandlaboratoriesfromCanada,Finland,France,Germany,Ireland,Japan,Netherlands,Norway,Poland,Portugal,Sweden,UKandUSAparticipatedatitrepersonnel(thusnotnecessarilyrepresentingtheir u"$ countriesnationalviewandposition)inthismeeting. E#E# 3.0 E Thefollowingdocumentswerediscussed: %D"'E#E# 9M X X90 E   ST/SG/AC.10/1998/45,fromFrance&#)E#E# 0 E   ST/SG/AC.10/C.3/1999/34,fromCanada'$*E#E# 0 E   ST/SG/AC.10/C.3/1999/47,fromNorwaywithadditionalexperimentaldatay(%+E#E# 0 E   aSwedishpaper ClassificationofammoniumnitratebasedemulsionU)&,E#E# 0 E   aGermanpaper,providingexperimentaltestdata 1*l'-E#E# lccl0 E  5. E Afteranextensivediscussion,anumberofpointsbecameclear. +)/E#E# 0 E  0EE#E#0E#E#Sincetherearealargenumberofdifferentcompositionsandformulationsareavailableinthe -*1 differentcountries,someshowingsignificantdifferenthazardpropertiesthanothers,aclearunambiguousdefinitiontowhichkindofformulationsthisnewentryinDivision5.1mightapplywasfeltnecessary.#0P-4##  #mw  Rww Rwm0 E 0E#E#Althoughothermodesshouldbekeptinmindaswell(intheviewoftheglobalharmonisation), = itwasfeltthattheclassificationinDivision5.1shouldbelimitedtotransportonly,asproposedbyFrance.Formanufacturinganduse,Class1mightbethemostappropriateone. ## yy0 E 0E#E# E   Thisfamilyofsubstanceshaveaphysicalstate,borderingbetweenliquidandsolid.Ifoxidising p propertiesareconsideredforthesubstance,thedecisiononwhetheritisaliquidorasolidhasconsequencesontheapplicabletestmethodaswell:O.1orO.2.Theseformulationstypicallyhavealargeportionofwaterincluded.Thewatercontentaffectstheresultsofthesolidoxidisertestmorethanthatoftheliquidoxidisertest,leadingtoalessstrictclassificationwhenthesolidoxidisertestisused.Thementionedreasonshaveresultedinvariouswaystoclassifythesubstanceinthedifferentcountries,varyingfromflammablesolid,viaoxidisingsolidandoxidisingliquidtononregulated.Fromaviewpointofaproperidentificationofhazardandof(global)harmonisation,thissituationisnotfavourable. ## zz0 E  0EE#E#0E#E#NorwayandSwedenhaveexperimentalexperienceonthebehaviourofthesubstancesinafire. E  Itwasfoundthatencasingmaterialthatsoftensinafire(likealuminiumorfibrereinforcedplastic)leadstolessviolentreactionsthanstrongermateriallikesteel.Someguidanceontheconstructionmaterialoftanksaswellasventingrequirementsmightbenecessary. ## {{0 E 0E#E# E   Nouniformviewonwhichhazardpropertiesshouldbeconsideredtoevaluatewhethera T candidatecanbeassignedtotheproposedentrywasobtainedinthelimitedtimeavailable.Explosivepropertiesareoftenmentioned,asarebehaviourinalargefireandoxidisingproperties.Adiabaticcalorimetrymightbeconsideredtoobtainbackgroundinformationsupportingafuturedecision.  ## 6.0 E Sincetheirexpertshaveexperienceonallrelevantpropertiesoftheammoniumnitrateemulsion \ matrix,theOECDIGUSworkinggroupsoffertheirassistancetotheCommitteeinfindinganswerstotheabovementionedunsolveditems.  E#E# 0 E Iffeltnecessary,FEEMhasofferedtohostaninformalworkinggroupinNorwaytodraftproposalstofillinthedetailswhicharetobesubmittedtothe(Sub)Committeeinthecurrentbiennium. E#E#  Proposal   7.0 E TheexpertspresentattheOECDIGUSworkinggrouprecommendtocreateanentryinDivision5.1 y!<! (inprinciple)fortheemulsionmatrix.IftheSubCommitteeagreeswiththisprinciple,theyalsomightwishtoconsidertoapprovetheformationofaninformalworkinggroup.OECDIGUSoffersitsassistanceinthisworkinggroup.Themaintaskofsuchaninformalworkinggroupcouldbe: E#E# 0 E 0E#E#todraftproposalsonadefinitionoftheformulationtowhichtheentryinDivision5.1as % & proposedbyFrancewouldapply, ## ||0 E 0E#E#torecommendthepropertiestobeassessed,Y(#)## }}0 E 0E#E#torecommendtheapplicabletestmethodsand*$+## ~~0 E 0E#E#toproposepossibleconditionsfortransport.+&-## C  $#CQ.M U] e M XQTheworkofthisinformalworkinggroupshouldbecompletedinthecurrentbiennium.E+ M U] e ,M XE@  %M____________