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COLLECTION RELIEEDES
DOCUMENTS "COM"
COM(74)877
Vol.1974/0134

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COMMISSION OFTHEEUROPEANCOMMUNITIES
COM(74)877final
Brussels,18June1974
Proposaifora
COUNCILDIRECTIVE
t!■»t
on"theapproximation ofthelawsoftheMember
Statesconcerningroadandrailtransporttanks
usedasmeasuringcontainers
(submittedtotheCouncil "bytheCommission)
COÎï(74)877final

EXPL/JJATORYHEMORMDUE
Lanytanksareusedfor"theroadorrail,transportofbeverages,petroleum
productsorchemicalliquids,whichareoflowviscosityatambient
temperature andpressure.Amongthemaresomewhichhavemetrological
characteristics suchthatthesetankscanbeusedtomeasurethevolumeof
theircontents.Theyareknewas"measuringcontainertanks"andtheiruse
issoconvenientthatitisevenregardedasaneconomicnecessityinmost
MemberStates.
Itisobviousthatsuchtanksconstructed andinspectedinoneMemberState
shouldbeabletobesoldandusedintheotherMemberStates,andabove
allitisessentialthattheCommunitylawsshouldbeharmonizedinorder
thattanksbeingusedfortheinternational transportofliquidsmaybe
regardedas"measuringcontainertanks"inthevariousKemberStates,so
astoavoidmultiplegaugingoperationsforthepurposeofavertaining and
checkingthevolumeofliquidtransported.
Toshowtheeconomicimportanceoftheproblem,itwillsufficetomentier
theprincipalproductsconcerned.Inthefirstplace,therearemany
hydrocarbons :premiumandregulargazoline,gasoil,kerosene,lightand
heavyfuel–oil;thenbeveragessuchaswine,milkandbeer;andfinally,
innumerable chemicalproducts,someofwhicharedangerousandcorrosive
tovaryingdegrees(thiscausescomplications ,particularlyinmeasuring
operations).
ThisDirectiveaimsateliminatingtechnicalbarrierstothefree
movementorroadandrailtansporttanksinreportofthemetrological
requirements (*)whichwillqualifythemas"measuringcontainertanks".
• • <
(*)ItshouldberememberedontheonehandthattheCouncilhas
alreadyadoptedaDirectiveconcerningthegaugingofships'tanks
'(CouncilDirectiveH°71/349/EECof12October1971»publishedin
O.J.N°L239/15of25October1971),andontheothersharethat
on31December 1"1971theGonrrissiontransmittedtoths^Councila
proposalfora'Directiveon"reinforcedplastictankgdesignedfor
transporting dangeroussubstancesbyroad".

Theaccuracyofmeasurement oftherolumeofliquidcontainedina
measuringcontainertankdependsessentially onthreefactorsj
-Thevirtualinvariability ofthevolumeofthetankandthatofits
compartments ,ifany.
-Theprecisionwithwhichthesevolumesareknownforagivenfilling
level.
-Theprecisionwithwhichthelevelofthefreesurfaceoftheliquid
containedinthetankcanbelocatedundernormalconditions ofuse.
Afterthevariousnationallawsinforcehadbeenexamined,thecompara­
tivestudiescarriedoutbytheWorkingPartyconvenedbytheCommission
showedthatitwaspossible,withafewadaptations ,toretainthe
variousproceduresusedintheMemberStates,,sothatcomparableand
acceptableaccuracyofmeasurement mightbeobtainedunderfaireconomic
conditions ofcontraction anduse.
Forthemeasurement ofthetankcapacity,forexample,theDirectiveprovi­
desfortwoprocedures :
1
1.Inthefirst,themanufacture submitsthetankforchecking,completed
andfullyequipped,butwithouthavingdetermineditscapacity.The
metrological servioethenperformsan"EECgauging"ofthetank,i.e.
determinesitscapacityuptocertainfillinglevels,thisoperation
beingcarriedoutbytransferring waterthevolumeofwhichismeasured
byspeciallycalibratedinstruments .Themeasuringlevelsaremarked
bymeansofsuitabledevices;
2.Inthesecondmethod,themanufacturer gaugesthetankhimselfandsubmits
it,completewithdataandmarksindicatingthecapacitiesanffilling
levels,tothemetrological service,whichcarriesoutan"EECinitial
verification "ofthecontainer;i.e.,bymeansofaprocesssimilar
tothatusedforEECgauging,itverifiesthattheindicatedcapacitiesare
accuratetowithinthetolerancesand'thatthelevelmarksarecorrectly
positioned.

-3-
Inbothcasesan"identification plate"mustshowtheinformation
necessaryfortheuseofthetankasameasuringcontainerandmust
bearthe"EECfinalinitialverification mark"providedforbythe
outlineDirectiveonmeasuringinstruments andmethodsofmetrological
control,adoptedbytheCouncilon26July1971(OJL2L2/l,6September
1971).
Thegaugingoperationscanalsogiverisetothegrantingofagauging
certificate (mendatoryinthecaseofrailtankers)incorporating a
centimetrictable,whichisindispensable inordertoenablethese
measuringcontainerstobeusedthroughouttheentiremeasuringzone.
AlthoughthedraftDirectivewasfavourablyreceivedbythevastmajority
oftheexperts,somedifferences ofopiniondidarise.Itwouldbe
appropriatetomentionthemostimportantones.
1.TheexpertsofoneMemberStatewantedmeasuringcontainertanksto
bemadesubjecttopatternapprovalinviewofthecomplexityofthese
vessels,themultiplicity oftypes,thepossibilities offraudandthe
differentinterpretations thatcouldbeplacedupontheDirectiveby
theinspectorsofthevariousservices.TheCommission ,liketheother
experts,thoughtthatthispractice,whichwasnotappliedintheother
memberStates,wouldcomplicateimportantprocedureswithoutbringing
anydefiniteadvantages.Itwasfelttobosufficientifthemetrolo­
gicalservicesoftheMemberStateswereempoweredtorequirethecons­
tructortoprovideallrelevantinformation ontheconstruction ofthe
tanks,eitheratthetimeoftheEECgaugingoperationsoratthetime
ofEECinitialverification .
2.Whereas,intheinterestsofmoreaccuratemarkingofthelevel,the
Directiveprescribesthatroadtransporttanksshallhavean"expansion
chamber"or"dome"ofconstantcentimetric volume,theexpertsofanother
LlemberStatewouldhavepreferred,forreasonsofdesignsofety,that
thisdevicewerenotmandatoryandwouldhavebeensatisfiedwitha
lesseraccuracy.TheotherexpertsandtheCommissionthoughtthatthe
accuracyprovidedforbytheDirectivewasindispensable ,whichmeant
thatitwasnecessarytouseadomeorexpansionchamber,andthatit
waspossible,moreover,toconstructsufficiently strongtanksincorpora­
tingthisdevice. ./

3.Finally,therewasdisagreement abouttheperiodofvalidityofthe
initialverification mark,whichwasfixedatfouryearsforroad
transporttanksandtenyearsfortheothers.Althroughthese
periodswereacceptedbytheexpertsofsevenI'emberStates,the
expertsofoneMemberStatewouldhavopreferredtheseperiodstobe
increasod-foeightandtwelveyearsrespectively ,whilethoseofanother
countiywantedthemtobelimitedtotwoyears.
-Tosumup,itshouldbenotedthattheCommission'sproposaldefines
ametrologicalstandard(i.e.,alevelofmanufacturing qualityancla
levelofaccuracyfordeterminingthecapacityofthecontainersand
formeasuringthevolumeoftheircontentsunderspecificconditions)
closetothosewhichar6laiddowninmostoftheMemberStatesbut
which,owingtotheirvaryingspecifications ,havenothitherto
permittedtheindispensable reciprocalrecognition ofcontrols.
GiventheeconomicimportanceoftradeinvolvingthismeansoftrrJis-
portitsadoption,willbeasignificantsteptowardsthefreemovement
ofgoodsbetweenthevariousMemberStates.
Consultation oftheEuropeanParliamentandtheEconomicandSocialCommittee
PursuanttoArticle100,secondparagraph,theOpinionofthesetwobodies
isrequired,sinceimplementation oftheprovisionsoftheDirectivewould
involueamendmentofthelegislation ofcertainMemberStates.

AI'IKEX T0EXPIANATOÏiY KSMGFiAMMJM
LEGISLATION INFORCE INTHEKMBER STATES RELATING TO
MEASURING GAUGES FOR TRUCKS AND TANK-CARS
BELGIQUE
Néant .
DANMARK
Intet ,
DEUTSCHLAND
-Gesetz über dasMess-undEichwesen (Eichgesetz )vom11.Juli 1969
(Buudesgesetzbl .IS.759 ),geändert durch dasGesetz zurAndei-ung des
Eichgesetzes vom6.Juli 1973 (Bundesgesetzbl .IS.716).
-§§291-300derEichordnung vom2k.Januar 19^2 inderFassung der
Bekanntmachung vom14.April 1965 (Beilage zumBundesenzeiger Nr.100
vom1.Juni 1965 )>zuletzt geändert durch dieFünfzehnte Verordnung
zurÄnderung derEichordnung vom26.Juni 1970 (Bundesgesetzbl .IS»973)«
FRANCE
-Ordonnance no.^5-2^05 du13octobre 19^5 relative .-aumesurage du
volume desliquides ,
-Décret du3novembre 19^-portant réglaient d'administration publique
.encequiconcerne lecontrôle desinstruments demesure .
-Décret no,70-791 du2septembre 1970 relatif aumesurage desappareils
etdesvaisseaux affectés àlaproduction ,aulogement etautransport
deliquides soumis àundroit indirect .
-Circulaire no.l966Bd.o du6février 1956 ,modifiée en1963 et1964 ,
fixant lesconditions deconstruction ,decontrôle etd'emploi des
citernes destinées autransport parroute desproduits pétroliers et
utilisées comme récipients-mesures .
IRELAND
Nolégislation .
ITALIA
-Regio Decreto 14gennaio 1926 ,n.112 ,colquale sono ammessi alla
verificazione prima misure da1000 litri montate suautocarri ,
destinate afornire icarburanti airivenditori .
-Regio Decreto 10giugno 19'-+0 ,n.865 ,colquale siammettono a
verificazione prima eperiodica misure metalliche percarburanti della
capacità di500litri .
•••

-Decreto delCapo Provvisorio dello Stato 8aprile 1947 ,numero 338 ,
colquale sono ammesse alla verificazione metrica misure percarburanti
della capacità di2000 litri .
-Legge 31gennaio 1967 ,n.33 -Ammissione alla verificazione metrica
delle misure peroliminerali ingenere edaltri liquidi ,della
capacità dicinque ,dieci ,venti ,venticinque ,cinquanta ecento metri
cubi .
LUXEMBOURG
-Loidu17mai1882 surlespoids etmesures ,modifiée parlaLoidu
28décembre 1883 etcomplétée parlaLoidu26janvier 1922 ainsi que
lesarrêtés pris pour l'exécution deceslois .
■NEDERLAND
-Wetopdemeetmiddelen (ijkwet 1937 )*
Formele bepalingen :indehandel gebruikte meetmiddelen moeten worden
geijkt engestempeld .
-Regeling inzake hetijken vanmeetmiddelen (ijkreglement ).
Verdere formele bepalingen :vaststellen van ijkmerken ,verplichtingen
van aanvragers tot ijken .
-Bepalingen betreffende hetijken vanmeetmiddelen (Ijkbeschikking ).
■Technische voorschriften inhetbijzonder voor "neetreservoirs ".
UNITED KINGD0M
Nolégislation .

PROPOSAI »FORACOUNCÏLDIRECTIVE
ontheapproximation ofthelawsoftheMember
Statesconcerningroadandrailtransporttanks
usedasmeasuringcontainers
(presentedtotheCouncilbytheCommission)
THECOUNCILOPTHEEUROPEANCOMMUNITIES ,
HavingregardtotheTreatyestablishing theEuropeanEconomicCommunity,
andinparticularArticle100thereof,
HavingregardtotheproposalfromtheCommission ,
HavingregardtotheOpinionoftheEuropeanParliament ,
HavingregardtotheOpinionoftheEconomicandSocialCommittee,
WhereasinseveralMemberStatesmandatoryprovisionsdefinethemethods
wherebyroadandrailtransporttanksusedasmeasuringcontainerscan"be
gaugedandverified;whereastheserequirements differfromoneMember
Statetoanother;whereasbyreasonoftheirdisparitytheyhinderreco­
gnitionbyallMemberStatesoftheresultofmeasurements carriedoutbyone
ofthem;
Whereasthoseobstaclestotheestablishment andfunctioning ofthecommon
marketcanbediminished ,oreveneliminated ,ifthesameprovisionsare
adoptedbyallMemberStates,eitherinadditiontoorinplaceoftheirexis­
tinglegislation ;
1-TiereastheCommunityprovisionsrelatingtothegaugingandverification
methodsdefinedinthisDirectiveensurethatroadandrailtransporttanks
whichareusedasmeasuringcontainersandaregaugedandverifiedbythese
methodsindicate,inalastingmannerandwithsufficientaccuracy,theamount
ofliquidtransportedinthem;

Hhereas thegauging andverification ofroad andrail transport tanks used
asmeasuring containers canbetreated inthesame wayastheinitial
verification procedure formeasuring instruments ;andwhereas certain
provisions oftheCouncil Directive of2.6July 1971 ontheapproximation
ofthelaws oftheMember States concerning common provisions formeasuring
instruments andmethods ofmetrological control (l)cantherefore beapplied
inthis case ,
HAS ADOPTED THIS DIRECTIVE :
-
(l)OJN°L202of6September 1971 »P»!•

-3-
Article 1
ThisDirectiveappliestomobiletanksusedforthetransportofliquids,
whethercontainersortankspermantlyortemporarily mountedonaroador
railvehicle,thecapacityofwhichisdeterminedorcheckedbyaMember
Stateinaccordancewiththeprovisionssetoutinthe.Annexesheretoin
ordertopermitmeasurementofthevolumeofliquidtheycontain.
Theyarecalled"SECmeasuringcontainertanks".
ThisDirectivedoesnotapplytocasksorbarrels.
Article 2
ThisDirectiverelatesralelytothoseESCmeasuringcontainertankswhich
areexpresslyconstructedforthereception,transportanddelivery,at
atmosphericpressure,ofliquidsthequantitiesofwhicharedeterminedin
unitsofvolume.
SuchtanksshallnotrequireESCpatternapprovalbuishallbesubjectto
metrological controlconsistingeitherofanESCgaugingorofanSECini­
tialverification undertheconditionslaiddownintheAnnexeshereto.
Article3
TheMemberStatesshallnotrefuse,prohibitorrestrictthesaleanduseof
measuringcontainertanksbearingtheEECinitialverification mark.They
shallaccordtoEECmarksandcertificates thesamestatusastotheirown
nationalmarksandcertificates .

-4-
Article4
MemberStatesshallputintoforcethelaws,regulations andadministra­
tiveprovisionsneededinordertocomplywiththisDirectivewithin
aighteenmonthsafteritsnotification ar-dshallforthwithinformthe
Commissionthereof.
MemberStatesshallensurethatthetextsoftheprovisionsofnational
lawwhichtheyadoptinthefieldcoveredbythisDirectivearecommuni­
catedtotheCommission.
Article5
ThisDirectiveisaddressedtotheMemberStates.

-MNEX-I
ChapterI
GeneralRsmarks-Définition
1.1.ESCgaugin#
EECgaugingcoversalltheoperationscarriedoutbyaMemberSate
todeterminethecapacityofameasuringcontainertankuptoagiven
fillinglevelundertheconditionslaiddowninthisDirective.
1.2.EECinitialvérification
EECinitialverification meanscheckingandconfirmingthatanewor
reconditioned measuringcontainertank,oronewhoseEECmarksareno
longervalid,meetstherequirements ofthisDirective.
1.3.Nominalcapacity"V
Eachcompartment ofanEECmeasuringcontainertankforroadtransport
isdesignatedbyitsnominalcapacity"V*'»whichmeansthevolumeof
liquiditisconsideredtocontainat20°Cwhenitisfilledtoagiven
level,withthetank.placedinthereferencepositiondefinedinSection
2.4.
1.4<Totalcapacity"V.
Thetotalcapacityofameasuringcontaineristhemaximumvolumeof
liquidwhichitcancontain,at20°C,•until.itoverflows,withthe
tankplacedinthereferencepositiondefinedinparagraph2.4.
/.

»•n;«yr^.X
1.5.Referencepointandplane"P"-Referenceplane"R"
Intheupperpartofthetank,thereshallbedefinedaneasily
accessiblereferencepoint"P",whichisclearlymarkedinsuch
awaythatitcannotbedefacedandinsuchawaythatitisa
permanentfeatureofthetank.Thehorizontalplanepassingthrough
thisreferencepointistermedthereferenceplane"P".
Ahorizontalreferenceplane"R"mayalsobedefined,inrelationto
whichthelevelsofthefreeliquidsurfaceareread.Points"P"and
"R"maycoincide.
1.6.Readingline
Thereadinglineisthelineagainstwhichtheliquidlevelinthe
tajikisread.Itmustpassascloseaspossibletothecentreof
gravityofthefreeliquidsurfaceanditspositionmustbedetermined.
Normally,thereadinglineisvertical,butifthetankisconstructed
withapronouncedinclinethislinemayitselfbeinclined;insuch
acaseitspositionmustbedeterminedbyanappropriate gauge-guide
device.
1.7.Totalreferenceheight"H"
Thetotalreferenceheight"H"isthedistancemeasuredalonfthe
readinglinebetweenthepointwherethislinemeetsthereference
plane"P'andthefootofthislineinthetank.
1.8.Ullage
Ullageisthedistancealongthereadinglinebetweenitsintersection
withthefreesurfaceoftheliquidandwiththereferenceplane"R".
1.9.Sensitivity
Thesensitivityofameasuringcontainertankinthevicinityofa
fillinglevelisthequotientobtainedbydividingthechangeinheight
ofthislevelbythecorresponding variationinthevolumeofliquid
measured.Thevariationinheightisexpressedinmillimetres andthe

-3-
jUSITEXI
variationinvolumeeitherinmetresorcubicdecimetres orin
thousandths ofthevolumeofliquidmeasured.
1.10.Métrologiealcheckingerror
Themetrological checkingerrorisgivenbythetotalofthemaximum
errorsthatcanoccurinthedetermination ,duringSECgaugingon
EECinitialverification ,ofthecapacitycorresponding tothefilling
levelsmeasured.
1.11.P.eadingerror
Thereadingerrormeansthemaximumerrorthatcanoccurinthe
detemanationoftheliquidlevel. 5
1.12.ilaximunipermissebleerroronanvvolumemo^.sursd
Thisisthemaximumerror,plusorminus,thatispermissibleinthe
measurement ofthevolumecontained,account ,takesinparticularof
thegaugingerror,thereadingerror,.anydimensionalinstabilityof
thetank,andthetank'sinclinationwithrespecttothereference
position.

-4-
•' MNEXI
ChapterII
Generalrequirements
2.1.Units
Theunitsofmeasurementusedshallbethoselaiddown"bythe
CouncilDirectiveof18October1971relatingtounitsofmeasure­
ment,asamendedbyAnnexIoftheActconcerningtheConditions
ofAccessionandtheAdjustmentstotheTreaties(l).
2.2.Higidity
Tanksandtankcompartments mustbesoconstructedthattheyare
virtuallynon-aeformable andretaintheirmetrologicalcharacteris­
tics.Inordertosatisfytheserequirements :
a)thetotalreferenceheight"H"shallnotvarybymorethanl/lOO,
withaminimumof1mm,whetherthevesselbeempty,partlyfilled
orfull;
b)thecharacteristic dimensionsofacompartment whenempty,
partlyfilledorfull,mustnotvarybymorethanl/lOOO,witha
minimumof1mm;
c)thetotalcapacityofacompartmentmustnotvarybymorethan
l/lOOOwhethertheneighbouring compartments beemptyoffull;-
d)thetankmaybemadeofanymetal,alloyorsyntheticmaterial
thatissuitableforthetypeofliquidtransported.These
materialsmustpossesssufficientdurability,stabilityand
strengthandacoefficientoflinearextensionnotexceeding
25.10^Kelvinat20°C.
2.3.Résistancetodétérioration
Thematerialusedforthewalls,pipeworkandallcomponentsm
contactwiththeliquidorliquidscontainedmustnotdeteriorate
undernormalconditionsofuse.Suitableliningsmaybeusedin
ordertosatisfythisrequirement .
./•
(1)O.J.!T°L73-27Ilarch1972,p.119and120.

-5-
ÂFWEX I
2.4 »Reference position
Thereference position ofanSECmeasuring container tank isthe
position itoccupies ,with all itscompartments filled :
a)when thecradle ofthecontainer oroftheindependent tank ,or
thevehicle onwhich thetank ismounted ,ortheentire tractor
and semi-trailer unit onwhich the tank ismounted rests onaflat
andhorizontal surface ;
b)When therail tanker rests onhorizontal railway track .
/
Allmeasuring wontainer tanks must beplaced inthereference position
before EECgauging orinitial verification operations arecarried out.
2.5 .Filling andemptying
Eacn compartment ofanEECmeasuring container tank shall beshaped
andconstructed insuch awaythat itcan ,without anyspecial manoeuvre ,
befilled tooverflowing without theformation ofairpockets below
thefilling level andbecompletely empties bygravity inallnormal
positions ofuse ,save inthe case ofexceptional conditions ofuse
which render theforegoing requirements inapplicable (notably emptying
bysuction ).
Channels ,mouldings and/orvent pipes ofadequate cross-section maybe
usod tosatisfy these requirements .
.Anybaffles andstiff eners inside acompartment must besoshaped and
perforated that they donotinterfere with thefilling andemptying
and donotcause anydifferences inlevel inthevarious sections of
thecompartment during these twooperations .
Thecomplete emptiness ofthecompartment or .compartments .must beeasily
verifiable .
2.6 .Dome -Expansion chamber
Adome orexpansion chamber isachamber with vertical side-walls which
issituated intheupper part ofanEECmeasuring container tank .

-6-
ANNEEI
2.7.Dipstick
Adipstickisagraduatedmeasurewhich,wheninsertedintothe
liquidalongthereadingline,enablestheleveloftheliquid
tobereadoff.Thisinstrumentmustnespeciallydesignedfor
thispurpose.
Adipstickformeasuringullagesshallconsistofj
-ameasuregraduâtedxnmm;
-ahandle,whoselowerpartisaflatmeasureperpendicular tothe
former,whichwheninuserestsonthereferenceplane"R"intheup­
perpartofthetank,thusensuringthecorrectpositionofthescale.
These"millimetricdipsticks"mustmeettherequirementsrelatingto
measurements oflengthinprecisionclassIorIIasdefinedinthe
CouncilDirectiveof19November1973andmustbeEEC-inspected and
stamped.
Inthepositionofuse,thebottomofthescale(zero)mustcoincide
withthereferenceplane"R".
2.8.PerformanceofEECgaugingorinitialverification operations
Beforetheseoperationsareperformedonnewmeasuringcontainertanks,
themetrologyservicesoftheMemberStatesmayrequiretheconstructor
orhisrepresentative tosupplyallsuchinformation ontheconstruction
ofthesemeasuringcontainertanksastheymayconsiderdesirable.
Thecapacityofcompartments shallbedeterminedbydecantingwater
orothersuitableliquid,thevolumeofwhichshallbemeasuredwith
thsaidofgaugesormeteringequipmentspeciallycalibratedforthis
purpose.
Thegaugingandverification operationsshallbecarriedoutinsucha
wayandtheinstrumentsusedshallhaveanaccuracysuchthattherela­
tiveerrorsinthedetermination ofcapacitiesdonotexceedplusor
minustwothousandths (2/1000)ofthevolumemeasured.
2.9.ApprovalofEECgaugingandinitialverification operations
Anidentification plateshallbeaffixedtoeachtankortankcompartment
asnearaspossibletothelevel-measuring devices;thisplateshallbe

-7-
ANNEXI
madeofresistantmaterialandshallstatetheinformationspecifiedin
sections3.10and4.5."Inparticular ,itshallbeartheSECfinal
initialverification mark/
Furthermore ,leadsealsbearingtheEECmark(EECpartialinitialveri­
ficationmark)shallbesetinsuchawayastopreventremovalofthe
plateandofallthefixeddevicesusedtomeasurethetotalreference
height"II"andtheliquidlevels.
Thetypeandthecharacteristics oftheEECinitialverification marks
shallbeaslaiddowninArticle10,paragraph2andAnnexeII,section
3,oftheCouncilI/irectiveof26July1971ontheapproximation ofthe
lawsoftheMemberStatesrelatingtocommonprovisionsforbothmeasu­
ringinstruments andmethodsofmetrological control.Article12ofthis
Directiveappliesmutatismutandis.
2.10.EECgaugingcertificate ''~
Theresultsofgaugingoperations maybeenteredonanEECgaugingcerti­
ficateincorporating adiagramandwherenecessary,allrelevantinforma­
tionconcerningtheuseofthemeasuringcontainer.
Thiscertificateisrequiredforrailtankerswhenthelevelismeasured
bymeansofadevicegraduatedinunitsoflenghandthemeasurementis
takenataplaceotherthan,inadomewhose,volume(incubiccm)is
constant..Inthiscaseitwillincorporate atableshowingthevolume
inlitresorcubicdecimetrescorresponding totheullages,expressedin
centimetres andmillimetres .
ThisdocumentshallbepreparedinaccordancewithAnnexII.
/

-8-
.JNNEX I
Chapter III
Special requirements concerning independent measuring container
tanks ormeasuring container tnnks mounted permanently or
temporarily onroad vehicles
3.1 .Construction and use
These measuring containers must incorporate adome orexpansion chamber
ofsufficient size toallov ;measurement inaccordance with section 3.6 .
below .
Theconditions prescribed byregulations other than metrological regula­
tions must becompleed with sothat theuse ofthetank asameasuring
container isnot adversely affected .
Tests associated with theapplication ofthese provisions andlikely to
alter themetrological characteristics must becarried outbefore EEC
gauging orSECinitial verification .
3.2.Ascertainment ofthereference position
Thereference position must beascertainable byanysuitable means such
asaspirit level incorporated inthetank ,ifthelatter has atleast
onecompartment more than onemetre inlength .
3.3 .Outlet orifice
Each compartment shall have anoutlet orifice situated atitslowest
point andasingle discharge pipe with noby-pass ,asshort andstraight
aspossible ,with nocounterslope andprovided atitsextremity with
aclosure' which delimits thecapacity ofthecompartment inadownward
direction .
Themeasured volume shall extend down thedischarge pipe asfarasthe
first fluid-tight closure .When there areseveral fluid-tight closures ,
asinthecase ofroad tankers designed forthetransport ofdangerous
substances ,thevolume ofthepipe between these various devices shall
notform part ofthemeasured volume .

ANNEXI
Inthiscase,theidentification plateshall "bearthewords:
"exclu&ingdischargepipe".
Bottomvalvessituatedattheinletofthedischargepipeshall,
asageneralrule,bepermissiblebuttheirpositionmustbeeasily-
discernible .Themeasuredvolumeshallextendasfarastheterminal
valve.
Manifoldslinkingtheextremetiesofthedischargepipesofseveral
compartments maybeusedwhennationalregulations permitthem.
Inthiscasetheymustberemovableinordertocomplywiththe
regulations ofMemberStates "whichprohibittheiruse.
Wherearoad-tanker measuringcontainerisequippedwithameasuring
unit,thecompartmentoutletsmaybelinkedbyaremovablemanifoldin
suchawaythateachcompartment canbeemptiedindividually ,bygravity
ifnecessary.
Wherearoad-tanker measuringcontainerisequippedwithapumpfor
emptyingbyentirecompartment ,theequipmentshallbecompletely
emptyattheendoftheoperation.
Permissible pipingandinternalcomponents
Heating,pipes,ventpipes,spillagedrainpipesandconduitsforbrake
lines,lightingcircuits,etc.whichrunthroughcompartments andthrough
recessessintheouterwallusedassteps,arepermissible providedthat
theirpresencedoesnotimpedefilling,emptyingorthereadingoflevels
andisnotliabletoimpairgaugingandmeasuringoperations.Allthese
componentsshallbementionedonthegaugingcertificate ,ifany.
Internalcompensators andhollowbodiesareprohibited.
Nommaicapacities
Onlycompartments withacapacityofnotlessthan100litresshallbe
acceptableasmeasuringcontainers.
iChevalueofthenominalcapacityshouldpreferablybeawholemultiple
of100litres.
For100to1000litresinclusive,however,itmaybeamultipleof1li­
tre;formorethan1000butnotmorethan-5000litresitmaybea
multipleof5litres;thereafteritmaybeamultipleof10litres.

-10-
ANNEXI
3.6.Measurement
Thevolumeoftheliquidshallbemeasuredbyascertaining thelevel
inthedomeorintheexpansionchamberbyoneofthefollowingmethods:
a)Atleasttwoverticalreadingwindows,placedinthewallofthe
domeorexpansionchamberandbearingamarkcorresponding tothe
nominalcapacityandascalegraduatedinunitsofvolumeon
eithersideofthismark.Thesetwowindowsmustbesituated
symmetrically withrespecttotheverticallongitudinal planeof
symmetryofthetank.
b)Afixedmarkingdevicesituatedinsidethedomeorexpansionchamber,
visiblefromaboveeitherdirectlyorthroughahorizontaltranspa­
rentwindowandconsisting
-eitherofraisedmarksontheinsidewallsituatedoppositeeach
otherandperpendicular totheverticallongitudinal planeof
symmetryofthetank,
-orofoneormoregraduations inunitsofvolumemarkedona
conicalfunneltheaxisofwhichcoincideswiththereadingline,
oronaninclinedplateascloseaspossibletothereadingline.
Theslopeofthegeneratrices ofthefunneloroftheinclinedplate
mustnotexceed65°tothehorizontal.
Themarkcorresponding tothenominaloapacitymustbewithin10mil­
limetresofthemid-heightofthedome.
c)Amillimetricdipstickconformingtotherequirementsofsection2.7*
above.
Thelevelsarereadbymeansofadipstrickalongthereadingline,
whichmustpasssubstantially throughthelocusofthecentresof
gravityofthehorizontalsectionsofthetankthroughoutthezone
inwhichliquidlevelscanberead.
•Thezeroofthedipstickmustbeinthereferenceplane"R"defined
insection1.5»above.
Thereferenceplane"R"shallbeformedbyawell-defined reference
surfacewhichissoplacedthatthereisnoobstacletotheinsertion
ofthedipstrick.,Thisreferencesurfacemayconsist:
-eitheroftheupperfacesoftwonon-deformable ,flat,projecting
partssecurelyfixedbelowtheplaneoftheupperedgeoftheorifice,

-11-
AN1TEXI
-oroftwosmoothareasintheplaneoftheupperedgeoftheorifice,
-orbytheupperedgeofthedipstickguide.-
Thethreemethodsdescribedabovemustallowmeasurement ofatleast
thevolumesbetween99$and-101i°ofthenominalcapcity"V"•
Formethodsa)andb),theintervalbetweentheaxesoftwoconsecutive
lines,knewnasthe"scaleinterval",mustcorrespondtoavolumenot
greaterthanone-thousandth of"V"•
Allpartsthepositionofwhichaffectsmeasurement mustberenderedirre­
movablebystampingtheEECsealingmarkonthem.
Extrenalleveltubesmustnotbeusedformeasuringthevolumeofliquid.
3.7.Inclination
Forinclinationsofthepositionofuseofupto5fcindirection
withrespecttothereferenceposition:
a)Allrequirementsrelatingtocompletefillingandcompleteemptying
mustbefullycompliedwith,
b)Theleveloftheliquidmustbevisibleandreadable.Thedevices
mentionedinsection3.6.above,particularly thewindows,thefunnel
orinclinedplateandthegraduatedscales,mustbedimensioned accor­
dingly.
3.8.Sensitivity andrangeofmeasurement
Atallpointswherealevelcanbedeterminedbyoneofthemethodsdes­
cribedinsection3.6.above,thesensitivity mustbenotlessthan2mm
forone-thousandth ofthevolumemeasured.
Hencetherangeofmeasurement hastobelimitedbyfixingineachspe­
cificcaseathresholdvaluefortheheightofliquidmeasuredanda
corresponding minimumvolume.
Belowthisvaluethecompartment mustnotbeusedasameasuringcontai­
ner.
3.9.Maximumpermissiblerelativeerrorinservice
Themaximumpermissiblerelativeerrorforanyvolumemeasuredshallbe
setatplusorminusfive-thousandths (5/l000)ofthatvolume.
•/.

-12-
MIEXI
3.10 .Identification plate
Theidentification plate referred toinsection 2.9 .shall state the
following information :
a)Theidentifcation number issued bytheauthority which carried out
theEECgauging orEECinitial verification ;
b)Foreach compartment :
-thenominal capacity "V 11andthecorresponding ullage ;
-theaverage centimetric volume inthedome orexpansion chamber ;
-thetotal reference height "H"andthetotal capacity "V^"?
c)Thename andaddress ofthemanufacturer ,theyear ofmanufacture and
the serial number ofthecompartment ;
d)Thedate ofthelast metrological inspection ;
e)TheEECfinal initial verification mark ;
f)IJhether ornotthedischarge pipe isincluded ;optionally ,informa­
tion stating orrestricting theliquid orliquids tobecontained ;
the name and address ofthe owner .
3.11 .Gauging certificate
When this certificate isdrawn up,under theconditions laid down in
section 2.10 ,itshall include alltheinformation appearing onthe
identification plate and ,where appropriate ,additional requirements .
3.12 .Validit.y
TheESCinitial verification marks andthegauging certificates and
tables shall cease tobevalid ,themetrological inspection shall be
carried outagain andtheidentification plate replaced either :
a)after aperiod offour years ,or
b)assoon asthetank hasbeen subjected toapressure test orhas
undergone deformation ,repair orconversion (chassis replacement ,
etc,.), andinparticular ifthetotal reference height "H"has
varied bymore than one*-thousandth .
•A

-13-
ANN3KI
ChnpterIV
Specialrequirements inrespactofmeasuringcontainer
tanksmountedonrailvehicles
4.1.Construction anduse
TheInternational UnionofRailways,therailwaycompaniesandthe
officialinspectionserviceslaydownconstruction andfilling
(expansionvolume)conditionsforrailtankersinordertoensure
transportwithoutoverloadingorotherrisks.Theseconditionsmust
becompliedwith,butinsuchawaythattheuseofthetankasa
measuringcontainerisnotimpaired.
Testsassociatedwiththeapplication oftheserequirements mustba
carriedoutbeforegauging.
4.2.Inclination
Allthegeneralrequirements relatingtocompletefillingandcomplete
emptyingmustbefullycompliedwithforinclinations oftheunitofup
to2Joinanydirectionwithrespecttothereference'position.
4.3.Outlets
.Each.tankoreachcompartmentshallhaveasingleoutletclearlysitua­
tedsubstantially atthemidpointofthelowergeneratrix.Thedis­
chargepipeshallhavetwooutlets,oneoneachsideofthevehicle,
locatedattheextremities ofastraighthorizontalpips.whichis
perpendicular tothelongitudinal axisofthewagonandisjoined
atitsmid-pointbythesingleverticaldischargepipefromthetank.
Thevolumemeasuredshallextenddownthedischargepipeasfarasthe
firstfluid-tightclosure.Whenthereareseveralsuccessivefluid-tight
closures,asinthecaseofrailtankors designedforthetransportof
dangeroussubstances ,thevolumeofthepipebetweenthesevariousdevices
shallnotformpartofthemeasuredvolume.Inthiscase,theidentifi­
cationplateshallbearthewords":•'excluding "dischargepipe".

-14-
/JîNEXI
Bottomvalvessituatedattheinletofthedischargepipeshall,as
orgeneralrule,bepermissiblebuttheirpositionmustbeeasily
discernible andtheyarenevertobeconsideredfluid-tight.
Themeasuredvolumeshallextendasfarasthe.terminalvalue.
4.4.-Jicillarypipinc
Heatingpipesinsidethetankarepermissibleprovidedthattheirpre­
sencedoesnotimpedefilling,emptyingorthereadingoflevelsand
isnotliabletoimpairgaugingandmeasuringoperations ,Thesepipes
shallbementionedonthegaugingcertificate ,ifany.
Internalcompensators andhollowbodiesareprohibited.
4.5.Ke?,sûrement
Theleveloftheliquidshallbeestablished fromtheullageasmeasured
byadipstickalongthereadinglinethepositionofwhichshallbeclear­
lyindicatedonthegaugingcertificate andwhichpassessubstantially
throughthecentreofgravityofthefreesurfaceoftheliquid.
Aspecialorifice,separatefromthefillingorifice,maybeprovided
forthispurpose.
Thereferencepointorplane"P"andthereferenceplane"R"definedin
section1.5»aswellasthedipstickmanufactured inaccordancewith
section2.7.,shallbeartheESCverification marksmentionedinsection
2.9.
4.6.Sensitivity
Thesensitivityinthevicinityofanyfillinglevelshallbenotless
thantwomillimetresperthousandthofthevolumeofliquidcontained.
Hencetherangeofmeasurement hastobelimitedbyfixingineachspe­
cificcaseathresholdvaluefortheheightofliquidmeasuredanda
corresponding minimumvolume.
Belowthisvaluethetankmustnotbeusedasameasuringcontainer.
4.7.Maximumpermissiblerelativeerrorinservice
Themaximumpermissiblerelativeerrorforanyvolumemeasuredshallbe
setatplusorminusthree(thousandths (3/l000)ofthatvolume.

-15-
'' iuMSXI
4.8.Identification plate
Theidentification platereferredtoinsection2.9«shallstate
thefollowinginformation :
a)theidentification numberissuedbytheauthoritywhichcarried
outtheEECgaugingorEECinitialverification ;
b)theregistration numberofthewagon;
c)foreachcompartment,thetotalreferencelength"H"andthe
totalcapacity"V^";
d)thenamesandaddressesoftheownerandofthemanufacturer ,
theserialnumberandtheyearofmanufacture ofthetank;
e)thedateofthelastmetrologicalinspection;
f)theESCfinalinitialverification mark;
g)whetherornotthedischargepipeisincluded;
optionally ,informationstatingorrestrictingtheliquidor
liquidstobeoontained.
Onthesameplateoronaseparateplatelocatedeitherclosetothe
formerorinsidethecoverofthefillingorificeandrendered
irremovable bymeansofanEECsealingmark,thegauging-certificate
tableshallbelegiblyandindeliblyreproduced.
4.9.Gaugingcertificate
ThecompetentauthorityoftheMemberStateshallissueagauging
certificate drawnupinaccordancewiththerequirements ofsection
2.10.;modelofthiscertificateisattachediniinnexII.
Thecertificateshallincludealltheparticulars appearingonthe
identification plate,togetherwithacentimentric tableshowing
thevolumescorresponding totheullages,startingfromaminimum
measurablevolumewhichisdefinedunderthesensitivity conditions
specifiedinsection4.6.Thecertificateshallremainvalidfor
10years;itshallbecancelledifthetankismodifiedorrepaired
orifthechassisisreplaced.
./

16-
ilNNEXI
4.10.Valirlity
9
TheSBCinitialverification marks,gaugingcertificates andgauging
tablesshallceasetobevalid,themetrological inspectionshall
becarriedoutagainandtheidentification platereplacedeithert
a)afteraperiodof10years,or
b)afterthetankhasbeensubjectedtoapessuretestorhas
undergonedeformation,repairorconversion(chassisreplacement,
etc.),andinparticularifthetotalreferenceheight"H*has
variedbymorethanone-thousandth .

ANNEXII
DIRECTIVE CONCERNING MEASURINO-C CNTAINER TAMKS
Gaugingcertificate formeasuringcontainers
mountedonrailvehicles
Thecertificate shallmdicate:
1.Theissuingauthorityandaserialnumber}
2.Theregistration numberofthewagon;
3.Thenamesandaddressesofthemanufacturer andoftheowner;
4.Thedateofissue:
5.Thestatusandsignatireoftheoperator,togetherwiththe
sealoftheauthorityconcerned;
6.Thereferencepointorplane"P",thereadinglineandthe
totalreferenceheight"H"inmillimetres ;
7.Thetotalcapacity
8.3ymeansofacentimetrictable,thevolumeofliquidincubic
decimetresorlitres,asafunctionoftheullage.Thistable
shallberestrictedtotheminimummeasurablevolume(this
shallbeexplicitlystated);
9.Bymeansofasketch,themeaningofthesymbols"P","H","V."