1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 7507-5:2000 ISO 75
2、07-5:2000 ICS 75.200 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Petroleum and liquid petroleum products Calibration of vertical cylindrical tanks Part 5: External electro-optical distance-ranging methodThis British Standard, having been prepared under the direction of the
3、 Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 September 2000 BSI 09-2000 ISBN 0 580 36478 X BS ISO 7507-5:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard
4、reproduces verbatim ISO 7507-5:2000 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee PTI/12, Petroleum measurement and sampling, to Subcommittee PTI/12/1, Static and dynamic petroleum measurement, which has the responsibility
5、 to: 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 informed; monitor related international and European developments and promulgate them in the UK. A list of or
6、ganizations represented on this subcommittee 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 Standards Catalogue under the section entitled “International S
7、tandards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British St
8、andard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a back page, pages 1 to 11 and a back cover. The BSI copyright notice displayed in this document indicates when the docu
9、ment was last issued.Referencenumber ISO7507-5:2000(E) INTERNATIONAL STANDARD ISO 7507-5 Firstedition 2000-07-01 Petroleumandliquidpetroleumproducts Calibrationofverticalcylindricaltanks Part5: Externalelectro-opticaldistance-ranging method PtroleetproduitsptroliersliquidesJaugeagedesrservoirs cylin
10、driquesverticaux Partie5:Mthodeparmesuragelectro-optiqueexternedeladistanceISO7507-5:2000(E) ii ISO7507-5:2000(E)iii Contents Page Foreword.iv Introduction.v 1 Scope1 2 Normativereferences1 3 Termsanddefinitions.1 4 Principle2 5 Precautions3 6 Equipment3 7 Generalconsiderations.3 8 Determinationofth
11、enumberofstations4 9 Target-pointpositioning.4 10 Instrumentset-up.5 11 Calibrationprocedure.5 12 Tolerances8 13 Othermeasurements.8 14 Calculationanddevelopmentofcapacitytables.8 AnnexA(informative)Computationoftankcalibrationtables9 Bibliography11ISO7507-5:2000(E) iv Foreword ISO(theInternationalO
12、rganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatc
13、ommittee.Internationalorganizations,governmentalandnon-governmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/I
14、ECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. AttentionisdrawntothepossibilitythatsomeoftheelementsofthispartofISO7507maybethesubjec
15、tofpatent rights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardISO7507-5waspreparedbyTechnicalCommitteeISO/TC28,Petroleumproductsand lubricants,SubcommitteeSC3,Staticpetroleummeasurement. ISO7507consistsofthefollowingparts,underthegeneraltitlePetroleumandli
16、quidpetroleumproducts Calibrationofverticalcylindricaltanks: Part1:Strappingmethod Part2:Optical-reference-linemethod Part3:Optical-triangulationmethod Part4:Internalelectro-opticaldistance-rangingmethod Part5:Externalelectro-opticaldistance-rangingmethod Part6:Recommendationsformonitoring,checkinga
17、ndverificationoftankcalibrationandcapacitytable AnnexAofthispartofISO7507isforinformationonly.ISO7507-5:2000(E)v Introduction ThisInternationalStandardformspartofaseriesontankcalibrationmethodsincludingthefollowing: a) ISO4269-1,PetroleumandliquidpetroleumproductsTankcalibrationbyliquidmeasurement P
18、art1:Incrementalmethodusingvolumetricmeters. b) ISO7507-1,PetroleumandliquidpetroleumproductsCalibrationofverticalcylindricaltanks Part1:Strappingmethod. c) ISO7507-2,PetroleumandliquidpetroleumproductsCalibrationofverticalcylindricaltanks Part2:Optical-reference-linemethod. d) ISO7507-3,Petroleuman
19、dliquidpetroleumproductsCalibrationofverticalcylindricaltanks Part3:Optical-triangulationmethod. e) ISO7507-4,PetroleumandliquidpetroleumproductsCalibrationofverticalcylindricaltanks Part4:Internalelectro-opticaldistance-rangingmethod. f) ISO8311,RefrigeratedlighthydrocarbonfluidsCalibrationofmembra
20、netanksandindependentprismatic tanksinshipsPhysicalmeasurement. g) ISO9091-1, Refrigerated light-hydrocarbon fluids Calibration of sphericaltanks in ships Part1:Stereo-photogrammetry. h) ISO9091-2,RefrigeratedlighthydrocarbonfluidsCalibrationofsphericaltanksinships Part2:Triangulationmeasurement. Th
21、emethodisanalternativetoothercalibrationmethodssuchasthestrappingmethod(ISO7507-1),theoptical- reference-linemethod(ISO7507-2),theoptical-triangulationmethod(ISO7507-3),andtheinternalelectro-optical distance-rangingmethod(ISO7507-4).INTERNATIONALSTANDARD ISO7507-5:2000(E)1 Petroleumandliquidpetroleu
22、mproductsCalibrationofvertical cylindricaltanks Part5: Externalelectro-opticaldistance-rangingmethod 1 Scope ThispartofISO7507specifiesamethodforthecalibrationofnon-insulatedverticalcylindricaltankshaving diametersgreaterthan5m,bymeansofexternalmeasurementusinganelectro-opticaldistance-rangingmethod
23、 (EODR),andforthesubsequentcompilationoftankcapacitytables. ThispartofISO7507isapplicabletotankswithcone-uporcone-downbottomsaswellastotankswithflat bottoms. 2 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsof thispartofISO7507
24、.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthesepublications donotapply.However,partiestoagreementsbasedonthispartofISO7507areencouragedtoinvestigatethe possibilityofapplyingthemostrecenteditionsofthenormativedocumentsindicatedbelow.Forundated references,thelatesteditionofthenorma
25、tivedocumentreferredtoapplies.MembersofISOandIECmaintain registersofcurrentlyvalidInternationalStandards. ISO4512: 1 ,PetroleumandliquidpetroleumproductsEquipmentformeasurementofliquidlevelsinstorage tanksManualmethods. ISO7507-1:1993,PetroleumandliquidpetroleumproductsCalibrationofverticalcylindric
26、altanksPart1: Strappingmethod. ISO7507-4:1995,PetroleumandliquidpetroleumproductsCalibrationofverticalcylindricaltanksPart4: Internalelectro-opticaldistance-rangingmethod. IEC60079-10:1995,ElectricalapparatusforexplosivegasatmospheresPart10:Classificationofhazardous areas. IEC60825-1:1998,Safetyofla
27、serproductsPart1:Equipmentclassification,requirementsandusersguide. 3 Termsanddefinitions ForthepurposesofthispartofISO7507,thetermsanddefinitionsgiveninISO7507-1andISO7507-4andthe followingapply. 1 Tobepublished.ISO7507-5:2000(E) 2 3.1 “at”station stationcurrentlyoccupiedbytheEODRinstrument 3.2 “ba
28、ck”station stationtotherearofthe“at“stationpresentlyoccupiedbytheEODRinstrument 3.3 bisect sightingofthecentreofatargetthroughthetelescopeofaEODRinstrument 3.4 changingface rotationofbothhorizontalandverticalcirclesoftheEODRinstrumentby200gon 3.5 “forward”station stationforwardofthe“at“stationpresen
29、tlyoccupiedbytheEODRinstrument 3.6 misclosure differencebetweenthesumofthehorizontalanglesmeasuredbetweenthevariousstationsofacompletetraverse ofthetankandthesumofthetheoreticalanglesforthesametraverse 3.7 station positionfromwhichmeasurementsofanglesandslopedistancearemade 3.8 tribrach device,seton
30、atripod,which,byadjustingthreeormorefootscrews,issetinahorizontalplaneanduponwhich surveyinginstrumentsaremounted 4Principle Thetankanditssurroundsarevisuallyinspectedand,havingcalculatedthenumberofstationsrequired,thesiting ofthemeasurementstationsischosen. Tripods,togetherwiththeirrespectivemeasur
31、ingequipment,areplacedattheinitialstations.Toestablishthe positionofthe“at“station,angularanddistancemeasurementsaremadefromtheinitial“at“stationtotheinitial “back“and“forward“stations.Angularanddistancemeasurementstothetopandbaseofthetankarethentaken togetherwithtangentialangularmeasurementsbisecti
32、ng(3.3)thetankshelltotherightandleftofthestation. Thesemeasurementsaremadeattherequiredpositionsoneachcourse.Thetripodsattheinitial“back“and“at“ stationsareleftinpositiontoenableclosureofthetraverseoncompletionofthecalibration. Fromeachofthesubsequent,predeterminedstations,angularanddistancemeasurem
33、entstothetopandbaseof thetankarethentaken,togetherwithtangentialangularmeasurementsbisecting(3.3)thetankshelltotheright andleftofthestation. Inmovingtoeachnewstation,theold“forward“stationbecomesthenew“at“stationandtheold“at“stationthe new“back“station.Thefinalmeasurementsaremadefroman“at“stationwhi
34、chwastheinitial“back“station;the final“forward“stationistheinitial“at“station. Thesemeasurements,afteranyadjustmentsformisclosure,allowthecalculationofthreedimensionalcoordinates whicharefittedintoamatrixdescribingthetankmathematically.Thecircumferencesatthevariousvertical positionsonthetankshellare
35、calculatedfromthisinformationandthecapacitytabledevelopedinaccordancewith ISO7507-1.ISO7507-5:2000(E)3 5 Precautions ThegeneralandsafetyprecautionscontainedinISO7507-1shallapplytothispartofISO7507. Inaddition,thelaseremittedbythedistancerangingunitshallconformtoIEC60825-1foraClass1orClass2 laser. Th
36、eEODRinstrumentandotherelectricalequipmentshallhavealevelofelectricalprotectionappropriateforthe areaclassificationofthelocationofthetanktobecalibrated.(SeeIEC60079-10.) 6 Equipment 6.1 Electro-opticaldistance-ranginginstrument Theangularanddistance-measuringpartsoftheinstrumentshallconformto5.1ofIS
37、O7507-4:1995. 6.2 Single-cornercubicprisms,(foruseastargetprisms)mountedonaprismholder NOTE Theprismholdershouldbemountedonarangingpoleoratribrachmountedonatripod. 6.3 Tribrach Aminimumoffivearerequired. 6.4 Tripod Aminimumoffivearerequired. 6.5 Rangingpole 6.6 Self-adhesiveretro-reflectivetape NOTE
38、 Theexternalsurfaceiscoatedwithsmallreflectiveprismsorfacets. 6.7 Ancillaryequipment Thisequipmentshallinclude a) apaintthicknessmeter,and b) aplatethicknessmeter. 6.8 Equipmentforbottomcalibration ThisequipmentshallbeonaccordancewithannexCofISO7507-1:1993. 7 Generalconsiderations 7.1 TheEODRinstrum
39、entshallbemaintainedsothatthevaluesofitsmeasurementuncertaintydonotexceed thevaluesgivenin6.1. 7.2 Tanksshallonlybecalibratedaftertheyhavebeenfilledatleastoncewithaliquidofequalorgreater densitythantheliquidwhichtheywillholdwheninuse. NOTE Thehydrostatictestappliedtonewtankswillsatisfythisrequiremen
40、tinmostcases.ISO7507-5:2000(E) 4 7.3 Ifthetankiscalibratedwhilstcontainingliquid,thecontentsshallremainstaticduringthecomplete calibration.Thedip(i.e.depth),temperatureanddensityoftheliquidshallbemeasuredandrecorded.However,if thetemperatureofthetankwalldiffersbymorethan10Cbetweentheemptypartoftheta
41、nkandthefullpartof thetank,thetankshalleitherbecompletelyfullorempty.Notransfersofliquidtoorfromthetankshallbemade duringcalibration. 7.4 TheEODRinstrumentshallbeverifiedpriortocalibration. Theaccuracyofthedistance-measuringunit,aswellastheangularmeasuringunit,shallbeverifiedusingthe proceduresrecom
42、mendedbythemanufacturer. NOTE TheappropriateproceduresgiveninannexAofISO7507-4:1995shouldbeusedfortheverificationofequipmentin thefield. 7.5 Calibrationshallbecarriedoutwithoutinterruption. 7.6 Theoverallheightofthereferencepointonthedip-hatchabovethedippingdatum-pointshallbemeasured usingadip-tapea
43、nddip-weightconformingtoISO4512.Thisoverallheight,tothenearest1mm,shallbe recorded. 8 Determinationofthenumberofstations Thenumberofstationsusedinacalibrationisdependentonthenominaltankcircumference. Thenumberofstationsshallbedeterminedbythefollowingequation: N= C 8 where N isthenumberofstationsroun
44、deduptothenearestevennumber; C isthenominalcircumferenceofthetank,inmetres. Theminimumnumberofstationsshallbenotlessthan8;anupperlimitof36stationsisacceptableunless circumstancesrequirethatmoremeasurementsbemade. NOTE Ifatankisabnormallydeformed,e.g.dentedornon-circular,thenumberoftangentialpointsan
45、dreadingsshould beincreasedtotakeaccountoftheareasofdeformation. 9 Target-pointpositioning Twosetsoftangentmeasurementsshallbetakenateachstation.Ineachsetoftangents,measurementstotwo tangentspercourseshallbetaken,oneat1/5to1/4ofthecourseheightabovethelowerhorizontalseamandthe otherat1/5to1/4ofthecou
46、rseheightbelowtheupperhorizontalseam.Inaddition,onthetopcourse,theextreme topofthetankshellshallbebisectedand,onthebottomcourse,theextremebottomofthecourseshallbe bisected. Anumberoftargetpointsgreaterthantheminimumnumberoftargetpointsrecommendedmaybechosen dependingonspecificcircumstancesandtankcon
47、ditions(seethenoteinclause8).ISO7507-5:2000(E)5 10Instrumentset-up 10.1Precalibration Inspecttheareasurroundingthetanktooptimizethepositionofthestationsandallowfirmandstablepositioning ofthetripods,(asillustratedinFigure1).Ateachstation,the“back“and“forward“stationsshallbeclearlyvisible fromthe“at“s
48、tation.Ensurethattherearenoobstructionstoclearlinesofsighttothetankbottom,topandsides. 10.2Set-upprocedures Setupthetripodsataheightwhichiscomfortableforalloperatives.Drivethetripodlegswellintothegroundto makethetripodsfirmandstable. Placetribrachsonthetripods. Seteachtribrachinthehorizontalplaneusi
49、ngthefootscrews. PlacetheEODRinstrumentonthetribrachatthe“at“stationandlevelhorizontally. IftheEODRinstrumentiselectronicandcapableofautomaticlevelling,ensurethattheinstrumentislevelled. Placetargetprismsonthe“forward“and“back“stations. Placetheretro-reflectivetape(6.6)aroundthebaseandtopofthetank. 11Calibrationprocedure 11.1Instrumentstart-up Switchtheinstrumentonandallowsufficienttimetoreachoperatingtemperatureinaccordancewiththe manufacturersrecommendations. Figure1StationpositioningISO7507-5:2000(E) 6 11.2Measurementproce
