1、BRITISH STANDARD BS EN 13631-4:2002 Explosives for civil uses High explosives Part 4: Determination of sensitiveness to impact of explosives The European Standard EN 13631-4:2002 has the status of a British Standard ICS 71.100.30 BS EN 13631-4:2002 This British Standard was published under the autho
2、rity of the Standards Policy and Strategy Committee on 6 June 2003 BSI 6 June 2003 ISBN 0 580 42007 8 National foreword This British Standard is the official English language version of EN 13631-4:2002. The UK participation in its preparation was entrusted to Technical Committee CII/61, Explosives f
3、or civil uses, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalo
4、gue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its corr
5、ect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests inf
6、ormed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 11 and a back cover. The BSI copyright date displayed in this document indicates when the documen
7、t was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN136314 September2002 ICS71.100.30 Englishversion ExplosivesforcivilusesHighexplosivesPart4: Determinationofsensitivenesstoimpactofexplosives ExplosifsusagecivilExplosifsParti
8、e4:Dtermination delasensibilitlimpactdesexplosifs ExplosivstoffefrzivileZweckeSprengstoffeTeil4: BestimmungderSchagempfindlichkeitvonExplosivstoffen ThisEuropeanStandardwasapprovedbyCENon11July2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingth
9、isEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherl
10、anguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,
11、Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMember
12、s. Ref.No.EN136314:2002EEN136314:2002(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Principle4 5 Apparatus .5 6 Testpieces. .7 7 Procedure .8 8 Testreport . .9 AnnexA (informative) Rangeofapplicabilityofthetestmethod.10 AnnexZA (informative) Clausesofthis
13、EuropeanStandardaddressingessentialrequirementsorother provisionsofEUDirectives 11EN136314:2002(E) 3 Foreword Thisdocument(EN136314:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC321“Explosivesforcivil uses“,thesecretariatofwhichisheldbyAENOR. ThisEuropeanStandardshallbegiventhestatusofanationalstand
14、ard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyMarch2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby March2003. ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropean FreeTradeAssociation,andsupportsessentialrequirementsofEUDir
15、ective(s). ForrelationshipwithEUDirective(s),seeinformativeannexZA,whichisanintegralpartofthisdocument. ThisEuropeanStandardisoneofaseriesofstandardson Explosivesforciviluses Highexplosives.Theother partsofthisseriesare: prEN136311 Part1:Requirements. EN136312 Part2:Determinationofthermalstabilityof
16、explosives. prEN136313 Part3:Determinationofsensitivenesstofrictionofexplosives. EN136315 Part5:Determinationofresistancetowater. EN136316 Part6:Determinationofresistancetohydrostaticpressure. prEN136317 Part7:Determinationofsafetyandreliabilityatextremetemperatures. prEN1363110 Part10:Methodforthev
17、erificationofthemeansofinitiation. prEN1363111 Part11:Determinationoftransmissionofdetonation. prEN1363112 Part12:Determinationoftheinitiatingcapabilityofboosters. prEN1363113 Part13:Methodforthedeterminationofdensity. prEN1363114 Part14:Methodforthedeterminationofvelocityofdetonation. prEN1363115 P
18、art15:Calculationofthermodynamicproperties. prEN1363116 Part16:Detectionandmeasurementoftoxicgases. AnnexAofthisdocumentisinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRe
19、public,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN136314:2002(E) 4 1Scope ThisEuropeanStandardspecifiesamethodfordeterminingthesensitivenesstoimpactofexplosives. 2 Normativereferences ThisEu
20、ropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywheni
21、ncorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). prEN138571:2001, ExplosivesforcivilusesPart1:Terminology. ENISO68317:1999, Heattreatedsteels,alloysteelsandfreecuttingsteelsPart17:Ballandrollerbearing steels(ISO68317:19
22、99). ENISO4957, Toolsteels(ISO4957:1999). ENISO/IEC17025,Generalrequirementsforthecompetenceoftestingandcalibrationlaboratories(ISO/IEC 17025:1999). 3 Termsanddefinitions Forthepurposesofthis EuropeanStandard,thefollowingtermsanddefinitionsapplyinadditiontothosegivenin prEN138571:2001: 3.1 reaction
23、occurrenceofreportorflame 3.2 dropheight distancebetweentheuppermostpartoftheimpactdeviceandthelowerfaceofthestrikingheadimmediately beforethedrop 3.3 impactenergy energyofthedropweightimmediatelybeforeimpact,calculatedbymultiplyingthemassofthedropweightbythe dropheightandbytheaccelerationduetogravi
24、ty NOTE Forpracticalpurposes,theaccelerationduetogravityisroundedto10m/ssothat,forexample,withadropweight ofmass1kgandadropheightof500mmtheimpactenergyisassumedtobe5J. 3.4 sensitivenesstoimpact lowestimpactenergyatwhichareactionisobtainedfromatleastoneoutofsixtests 4P r i n c i p l e Aweightofknownm
25、assisdroppedontoasampleoftheexplosivewhichisconfinedinawaythatduringthe impactoftheweightnosignificantfrictionisappliedtotheexplosive.EN136314:2002(E) 5 5 Apparatus 5.1DropHammer, (seeFigure1)consistingofacaststeelblockwithbase,ananvil,acolumn,guides,drop weightswithreleasedevice,andanimpactdevice.T
26、hecolumnismadefromaseamlessdrawnsteeltube. Thesupportintowhichthecolumnisfixedisboltedtothebackofthesteelblock.Thedimensionsoftheanvil (see5.2)andtheintermediateanvilaregiveninFigure2,whichshowsthearrangementofthelowerparts. Thetwoguideswhicharefixedtothecolumnbymeansofthreecrosspiecesarefittedwitha
27、toothedrackto limitthereboundofthedropweight(see5.3)andamoveablegraduatedscaleforadjustingthedropheight. NOTEAnexampleofdrophammeristheBAMfallhammer. Dimensionsinmillimetres Key 1Guides 2Releasedevice 3Dropweight 4Anvil 5Column 6Steelblock Key 1Impactdevice 2Locatingring 3Locatingplate 4Intermediate
28、anvil 5Anvil 6Steelblock Figure1GeneralarrangementoftheBAM fallhammer(schemeofBAM 1 apparatus) Figure2LowerpartoftheBAMfallhammer Thedropheightshallbeaccuratetowithin0,5cm.Thedropweightreleasemechanismisadjustablebetween theguidesandisclampedtothembytheoperationofalevernutontwojaws.Theapparatusshall
29、befirmly 1 BAM:BundesanstaltfrMaterialforschungundprfung.EN136314:2002(E) 6 securedtoaconcreteblock,withminimumdimensionsof0,6m 0,6m 0,6m,bymeansoffouranchoringbolts. Theguidesshallbevertical.Awoodenprotectiveboxwithinnerprotectiveliningandawindowforobservation surroundstheapparatusuptothelevelofthe
30、bottomcrossbar. 5.2 Steelanvil, screwedontothesteelblockandcastbase.Thesteelusedfortheanvilisoftype90MnCrV8 (ENISO4957,HRChardnessof60). 5.3 Threedropweights ofmass1kg,5kgand10kg.Eachdropweightisprovidedwithtwolocatinggrooves toholditbetweentheguidesasitdrops.Asuspensionspigot,aremovablecylindricals
31、trikingheadandarebound catcharescrewedontothedropweight.Thestrikingheadismadefromhardenedsteelofthesametypeasthe anvil(see5.2)withaminimumdiameterof25mm.Ithasashouldertopreventitfrombeingforcedintothedrop weightbytheimpact.Thedropweightsareusedinconjunctionwithparticulardropheightstoproducetheimpact
32、 energiesasgiveninTable1.Themassofeachdropweightshallbewithin0,1%ofitsspecifiedmass. Table1Combinationsofdropheight,massofdropweightandtheresultingimpactenergies Dropheight cm Massofdrop weight kg Impactenergy J 10 1 1 20 1 2 30 1 3 40 1 4 50 1 5 15 5 7,5 20 5 10 30 5 15 40 5 20 50 5 25 60 5 30 35 1
33、0 35 40 10 40 50 10 50 5.4 Impactdevice,consistingoftwocoaxialsteelcylinders,oneabovetheotherinahollowcylindricalsteel guidering.Thecylindersaresteelrollersfromrollerbearingswithpolishedsurfacesandroundededges.Boththe ringandthesteelrollersaremadeofsteel100Cr6asspecifiedinENISO68317:1997(HRCHardness
34、58to65). ThedimensionsofthecylindersandtheringaregiveninFigure3.Theimpactdeviceisplacedonanintermediate anvilandcentredbyalocatingringwitharingofventholestopermittheescapeofgases.EN136314:2002(E) 7 Key 1Steelcylinders 2Guidecollar 3Locatingring Dimensionsinmillimetres Figure3Partsoftheimpactdevicean
35、dtheirdimensions 6 Testpieces 6.1 Solidsubstanceswhichareeasilybrokenuporinpowderedform Granularsubstancesshallbepassedthroughasievewithanaperturesizeof0,5mm.Thefractionwhichpasses throughthesieveshallbeusedforthetest. Substanceswhichhavebeencompressed,castorotherwiseconsolidatedshallbebrokenintosma
36、llpiecesand sieved.Thefractionwhichpassesthrougha1mmsieveandisretainedona0,5mmsieveisusedforthetest. Forsubstanceswhichcontainmorethanoneconstituent,thesievefractionusedforthetestshallberepresentative oftheoriginalsample. Asampleofthesubstancepreparedasdescribedaboveshallbetakenwithacylindricalmeasu
37、reof40mm 3 capacity(3,7mmdiameterby3,7mmlength)foreachtest. 6.2 Plasticbondedsubstancesandothersolidswhicharenoteasilybrokenup Thesesubstancesshallbetestedintheformofdiscsofabout4mmindiameterandabout3mminthickness (volume40mm).EN136314:2002(E) 8 6.3 Pastelikeandgeltypesubstances Forthesesubstancesno
38、specialpreparationisnecessary.Asampleshallbetakenwithacylindricaltubeof 40mm 3 capacity(3,7mmdiameterby3,7mmlength).Thetubeshallbeinsertedintothesubstanceand,after levellingoffthesurplus,thesampleshallberemovedfromthetubebymeansofawoodenrod.Forsubstances whichcontainmorethanoneconstituent,thesampleu
39、sedforthetestshallberepresentativeoftheoriginal sample. 6.4 Liquidsubstances Asampleistakenwithafinedrawnpipetteof40mm 3 capacity. 7 Procedure 7.1 Preparationoftheimpactdevice Settheappropriatedropweightandthereleasedevicetotherequireddropheightandclampthereleasedeviceto theguides.Placetheimpactdevi
40、ceintothelocatingringontheintermediateanvilwithouttheuppersteelcylinder. Placesolid,pastelikeandgeltypesamplesdirectlyintotheopenimpactdevice.Placetheuppersteelcylinderin theimpactdeviceandpressgentlyuntilittouchesthesample,whichcanberecognisedbyanoticeableresistance. Avoidflatteningofthesampleasmuc
41、haspossible.Whereconsecutivedeterminationshavetobeundertakenwith thesamesample,notetheheightoftheuppercylinderwithrespecttothecollarandsettothesameheightfor eachofthesubsequentdeterminations. Placeliquidsamplesintheopendeviceinsuchawaythatthegroovebetweenthelowersteelcylinderandthe guideringisfilled
42、.Carefullylowertheuppersteelcylinderuntilitslowerfaceis2mmabovethelowercylinder. Holdinplacewitharubbertoroidalring.Ifcapillaryactioncausesthesampletoexudefromaroundthetopofthe sleeve,cleantheassemblyandintroduceafurthertestportion.SeeFigure4. 7.2 Determination Placethefilledimpactdevicecentrallyont
43、heintermediateanvilandclosetheprotectivewoodenbox.Commence thetestwithanimpactenergyof10J,thatiswithadropweightof5kgandadropheightof20cm(seeTable1for weight/heightcombinationstoproducespecificimpactenergies).Releasethedropweightandobservethe behaviourofthesample.Theobservationisclassifiedintooneofthesecategories
