ISO 9906-2012

BSENISO99062012BSISTANDARDSPUBLICATIONROTODYNAMICPUMPSHYDRAULICPERFORMANCEACCEPTANCETESTSGRADES1,2AND3ISO99062012NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWRAISINGSTANDARDSWORLDWIDEBSENISO99062012BRITISHSTANDARDNATIONALFOREWORDTHISBRITISHSTANDARDISTHEUKIMPLEMENTATIONOFENISO99062012ITSUPERSEDESBSENISO99062000WHICHISWITHDRAWNTHEUKPARTICIPATIONINITSPREPARATIONWASENTRUSTEDTOTECHNICALCOMMITTEEMCE/6,PUMPSANDPUMPTESTINGALISTOFORGANIZATIONSREPRESENTEDONTHISCOMMITTEECANBEOBTAINEDONREQUESTTOITSSECRETARYTHISPUBLICATIONDOESNOTPURPORTTOINCLUDEALLTHENECESSARYPROVISIONSOFACONTRACTUSERSARERESPONSIBLEFORITSCORRECTAPPLICATIONTHEBRITISHSTANDARDSINSTITUTION2012PUBLISHEDBYBSISTANDARDSLIMITED2012ISBN9780580588327ICS23080COMPLIANCEWITHABRITISHSTANDARDCANNOTCONFERIMMUNITYFROMLEGALOBLIGATIONSTHISBRITISHSTANDARDWASPUBLISHEDUNDERTHEAUTHORITYOFTHESTANDARDSPOLICYANDSTRATEGYCOMMITTEEON31MAY2012AMENDMENTSISSUEDSINCEPUBLICATIONDATETEXTAFFECTEDEUROPEANSTANDARDNORMEEUROPENNEENISO9906EUROPISCHENORMMAY2012ICS23080SUPERSEDESENISO99061999ENGLISHVERSIONROTODYNAMICPUMPSHYDRAULICPERFORMANCEACCEPTANCETESTSGRADES1,2AND3ISO99062012POMPESROTODYNAMIQUESESSAISDEFONCTIONNEMENTKREISELPUMPENHYDRAULISCHEABNAHMEPRFUNGKLASSENHYDRAULIQUEPOURLARCEPTIONNIVEAUX1,2ET3ISO1,2UND3ISO9906201299062012THISEUROPEANSTANDARDWASAPPROVEDBYCENON16MARCH2012CENMEMBERSAREBOUNDTOCOMPLYWITHTHECEN/CENELECINTERNALREGULATIONSWHICHSTIPULATETHECONDITIONSFORGIVINGTHISEUROPEANSTANDARDTHESTATUSOFANATIONALSTANDARDWITHOUTANYALTERATIONUPTODATELISTSANDBIBLIOGRAPHICALREFERENCESCONCERNINGSUCHNATIONALSTANDARDSMAYBEOBTAINEDONAPPLICATIONTOTHECENCENELECMANAGEMENTCENTREORTOANYCENMEMBERTHISEUROPEANSTANDARDEXISTSINTHREEOFFICIALVERSIONSENGLISH,FRENCH,GERMANAVERSIONINANYOTHERLANGUAGEMADEBYTRANSLATIONUNDERTHERESPONSIBILITYOFACENMEMBERINTOITSOWNLANGUAGEANDNOTIFIEDTOTHECENCENELECMANAGEMENTCENTREHASTHESAMESTATUSASTHEOFFICIALVERSIONSCENMEMBERSARETHENATIONALSTANDARDSBODIESOFAUSTRIA,BELGIUM,BULGARIA,CROATIA,CYPRUS,CZECHREPUBLIC,DENMARK,ESTONIA,FINLAND,FRANCE,GERMANY,GREECE,HUNGARY,ICELAND,IRELAND,ITALY,LATVIA,LITHUANIA,LUXEMBOURG,MALTA,NETHERLANDS,NORWAY,POLAND,PORTUGAL,ROMANIA,SLOVAKIA,SLOVENIA,SPAIN,SWEDEN,SWITZERLAND,TURKEYANDUNITEDKINGDOMEUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITEUROPENDENORMALISATIONEUROPISCHESKOMITEEFRNORMUNGMANAGEMENTCENTREAVENUEMARNIX17,B1000BRUSSELS2012CENALLRIGHTSOFEXPLOITATIONINANYFORMANDBYANYMEANSRESERVEDREFNOENISO99062012EWORLDWIDEFORCENNATIONALMEMBERSBSENISO99062012ENISO99062012EFOREWORDTHISDOCUMENTENISO99062012HASBEENPREPAREDBYTECHNICALCOMMITTEEISO/TC115“PUMPS“INCOLLABORATIONWITHTECHNICALCOMMITTEECEN/TC197“PUMPS”THESECRETARIATOFWHICHISHELDBYAFNORTHISEUROPEANSTANDARDSHALLBEGIVENTHESTATUSOFANATIONALSTANDARD,EITHERBYPUBLICATIONOFANIDENTICALTEXTORBYENDORSEMENT,ATTHELATESTBYNOVEMBER2012,ANDCONFLICTINGNATIONALSTANDARDSSHALLBEWITHDRAWNATTHELATESTBYNOVEMBER2012ATTENTIONISDRAWNTOTHEPOSSIBILITYTHATSOMEOFTHEELEMENTSOFTHISDOCUMENTMAYBETHESUBJECTOFPATENTRIGHTSCENAND/ORCENELECSHALLNOTBEHELDRESPONSIBLEFORIDENTIFYINGANYORALLSUCHPATENTRIGHTSTHISDOCUMENTSUPERSEDESENISO99061999ACCORDINGTOTHECEN/CENELECINTERNALREGULATIONS,THENATIONALSTANDARDSORGANIZATIONSOFTHEFOLLOWINGCOUNTRIESAREBOUNDTOIMPLEMENTTHISEUROPEANSTANDARDAUSTRIA,BELGIUM,BULGARIA,CROATIA,CYPRUS,CZECHREPUBLIC,DENMARK,ESTONIA,FINLAND,FRANCE,GERMANY,GREECE,HUNGARY,ICELAND,IRELAND,ITALY,LATVIA,LITHUANIA,LUXEMBOURG,MALTA,NETHERLANDS,NORWAY,POLAND,PORTUGAL,ROMANIA,SLOVAKIA,SLOVENIA,SPAIN,SWEDEN,SWITZERLAND,TURKEYANDTHEUNITEDKINGDOMENDORSEMENTNOTICETHETEXTOFISO99062012HASBEENAPPROVEDBYCENASAENISO99062012WITHOUTANYMODIFICATIONCONTENTSBSENISO99062012ISO99062012EPAGEFOREWORDIVINTRODUCTIONV1SCOPE12NORMATIVEREFERENCES13TERMS,DEFINITIONS,SYMBOLSANDSUBSCRIPTS131TERMSANDDEFINITIONS132TERMSRELATINGTOQUANTITIES333SYMBOLSANDSUBSCRIPTS94PUMPMEASUREMENTSANDACCEPTANCECRITERIA1041GENERAL1042GUARANTEES1143MEASUREMENTUNCERTAINTY1144PERFORMANCETESTACCEPTANCEGRADESANDTOLERANCES1545DEFAULTTESTACCEPTANCEGRADESFORPUMPAPPLICATION215TESTPROCEDURES2251GENERAL2252DATEOFTESTING2253TESTPROGRAMME2254TESTINGEQUIPMENT2255RECORDSANDREPORT2256TESTARRANGEMENTS2357TESTCONDITIONS2358NPSHTESTS236ANALYSIS2661TRANSLATIONOFTHETESTRESULTSTOTHEGUARANTEECONDITIONS2662OBTAININGSPECIFIEDCHARACTERISTICS27ANNEXANORMATIVETESTARRANGEMENTS28ANNEXBINFORMATIVENPSHTESTARRANGEMENTS37ANNEXCINFORMATIVECALIBRATIONINTERVALS40ANNEXDINFORMATIVEMEASUREMENTEQUIPMENT41ANNEXEINFORMATIVETESTSPERFORMEDONTHEENTIREEQUIPMENTSETSTRINGTEST46ANNEXFINFORMATIVEREPORTINGOFTESTRESULTS48ANNEXGINFORMATIVESPECIALTESTMETHODS52ANNEXHINFORMATIVEWITNESSEDPUMPTEST53ANNEXIINFORMATIVECONVERSIONTOSIUNITS54ANNEXJINFORMATIVEMEASUREMENTUNCERTAINTYFORNPSHTEST56BIBLIOGRAPHY57ISO2012ALLRIGHTSRESERVEDIIIBSENISO99062012ISO99062012EFOREWORDISOTHEINTERNATIONALORGANIZATIONFORSTANDARDIZATIONISAWORLDWIDEFEDERATIONOFNATIONALSTANDARDSBODIESISOMEMBERBODIESTHEWORKOFPREPARINGINTERNATIONALSTANDARDSISNORMALLYCARRIEDOUTTHROUGHISOTECHNICALCOMMITTEESEACHMEMBERBODYINTERESTEDINASUBJECTFORWHICHATECHNICALCOMMITTEEHASBEENESTABLISHEDHASTHERIGHTTOBEREPRESENTEDONTHATCOMMITTEEINTERNATIONALORGANIZATIONS,GOVERNMENTALANDNONGOVERNMENTAL,INLIAISONWITHISO,ALSOTAKEPARTINTHEWORKISOCOLLABORATESCLOSELYWITHTHEINTERNATIONALELECTROTECHNICALCOMMISSIONIECONALLMATTERSOFELECTROTECHNICALSTANDARDIZATIONINTERNATIONALSTANDARDSAREDRAFTEDINACCORDANCEWITHTHERULESGIVENINTHEISO/IECDIRECTIVES,PART2THEMAINTASKOFTECHNICALCOMMITTEESISTOPREPAREINTERNATIONALSTANDARDSDRAFTINTERNATIONALSTANDARDSADOPTEDBYTHETECHNICALCOMMITTEESARECIRCULATEDTOTHEMEMBERBODIESFORVOTINGPUBLICATIONASANINTERNATIONALSTANDARDREQUIRESAPPROVALBYATLEAST75OFTHEMEMBERBODIESCASTINGAVOTEATTENTIONISDRAWNTOTHEPOSSIBILITYTHATSOMEOFTHEELEMENTSOFTHISDOCUMENTMAYBETHESUBJECTOFPATENTRIGHTSISOSHALLNOTBEHELDRESPONSIBLEFORIDENTIFYINGANYORALLSUCHPATENTRIGHTSISO9906WASPREPAREDBYTECHNICALCOMMITTEEISO/TC115,PUMPS,SUBCOMMITTEESC2,METHODSOFMEASUREMENTANDTESTINGTHISSECONDEDITIONCANCELSANDREPLACESTHEFIRSTEDITIONISO99061999,WHICHHASBEENTECHNICALLYREVISEDIVISO2012ALLRIGHTSRESERVEDBSENISO99062012ISO99062012EINTRODUCTIONTHETESTSINTHISINTERNATIONALSTANDARDAREINTENDEDTOASCERTAINTHEPERFORMANCEOFTHEPUMPANDTOCOMPARETHISWITHTHEMANUFACTURERSGUARANTEETHENOMINATEDGUARANTEEFORANYQUANTITYISDEEMEDTOHAVEBEENMETIF,WHERETESTEDACCORDINGTOTHISINTERNATIONALSTANDARD,THEMEASUREDPERFORMANCEFALLSWITHINTHETOLERANCESPECIFIEDFORTHEPARTICULARQUANTITYSEE44ISO2012ALLRIGHTSRESERVEDVBSENISO99062012BSENISO99062012INTERNATIONALSTANDARDISO99062012EROTODYNAMICPUMPSHYDRAULICPERFORMANCEACCEPTANCETESTSGRADES1,2AND31SCOPETHISINTERNATIONALSTANDARDSPECIFIESHYDRAULICPERFORMANCETESTSFORCUSTOMERSACCEPTANCEOFROTODYNAMICPUMPSCENTRIFUGAL,MIXEDFLOWANDAXIALPUMPS,HEREINAFTER“PUMPS”THISINTERNATIONALSTANDARDISINTENDEDTOBEUSEDFORPUMPACCEPTANCETESTINGATPUMPTESTFACILITIES,SUCHASMANUFACTURERSPUMPTESTFACILITIESORLABORATORIESITCANBEAPPLIEDTOPUMPSOFANYSIZEANDTOANYPUMPEDLIQUIDSWHICHBEHAVEASCLEAN,COLDWATERTHISINTERNATIONALSTANDARDSPECIFIESTHREELEVELSOFACCEPTANCEGRADES1B,1EAND1UWITHTIGHTERTOLERANCEGRADES2BAND2UWITHBROADERTOLERANCEGRADE3BWITHEVENBROADERTOLERANCETHISINTERNATIONALSTANDARDAPPLIESEITHERTOAPUMPITSELFWITHOUTANYFITTINGSORTOACOMBINATIONOFAPUMPASSOCIATEDWITHALLORPARTOFITSUPSTREAMAND/ORDOWNSTREAMFITTINGS2NORMATIVEREFERENCESTHEFOLLOWINGREFERENCEDDOCUMENTSAREINDISPENSABLEFORTHEAPPLICATIONOFTHISDOCUMENTFORDATEDREFERENCES,ONLYTHEEDITIONCITEDAPPLIESFORUNDATEDREFERENCES,THELATESTEDITIONOFTHEREFERENCEDDOCUMENTINCLUDINGANYAMENDMENTSAPPLIESISO177691,LIQUIDPUMPSANDINSTALLATIONGENERALTERMS,DEFINITIONS,QUANTITIES,LETTERSYMBOLSANDUNITSPART1LIQUIDPUMPSISO177692,LIQUIDPUMPSANDINSTALLATIONGENERALTERMS,DEFINITIONS,QUANTITIES,LETTERSYMBOLSANDUNITSPART2PUMPINGSYSTEM3TERMS,DEFINITIONS,SYMBOLSANDSUBSCRIPTS31TERMSANDDEFINITIONSFORTHEPURPOSESOFTHISDOCUMENT,THETERMS,DEFINITIONS,QUANTITIESANDSYMBOLSGIVENINISO177691AND177692ANDTHEFOLLOWINGAPPLYNOTE1TABLE1GIVESANALPHABETICALLISTOFTHESYMBOLSUSEDANDTABLE2GIVESALISTOFSUBSCRIPTSSEE33NOTE2ALLFORMULAEAREGIVENINCOHERENTSIUNITSFORCONVERSIONOFOTHERUNITSTOSIUNITS,SEEANNEXI311GENERALTERMSNOTEALLOFTHETYPESOFTESTIN311APPLYTOGUARANTEEPOINTTOFULFILTHECUSTOMERSSPECIFICATIONS3111GUARANTEEPOINTFLOW/HEADQ/HPOINT,WHICHATESTEDPUMPSHALLMEET,WITHINTHETOLERANCESOFTHEAGREEDACCEPTANCECLASSISO2012ALLRIGHTSRESERVED1BSENISO99062012ISO99062012E3112FACTORYPERFORMANCETESTPUMPTESTPERFORMEDTOVERIFYTHEINITIALPERFORMANCEOFNEWPUMPSASWELLASCHECKINGFORREPEATABILITYOFPRODUCTIONUNITS,ACCURACYOFIMPELLERTRIMCALCULATIONS,PERFORMANCEWITHSPECIALMATERIALS,ETCNOTEATYPICALPERFORMANCETESTCONSISTSOFTHEMEASUREMENTOFFLOW,HEADANDPOWERINPUTTOTHEPUMPORPUMPTESTMOTORADDITIONALMEASUREMENTS,SUCHASNPSH,MAYBEINCLUDEDASAGREEDUPONAFACTORYTESTISUNDERSTOODTOMEANTESTINGATADEDICATEDTESTFACILITY,OFTENATAPUMPMANUFACTURERSPLANTORATANINDEPENDENTPUMPTESTFACILITY3113NONWITNESSEDPUMPTEST31131FACTORYTESTTESTPERFORMEDWITHOUTTHEPRESENCEOFAPURCHASERSREPRESENTATIVE,INWHICHTHEPUMPMANUFACTURERISRESPONSIBLEFORTHEDATACOLLECTIONANDJUDGEMENTOFPUMPACCEPTANCENOTETHEADVANTAGEOFTHISTESTISCOSTSAVINGSANDACCELERATEDPUMPDELIVERYTOTHEPUMPUSERINMANYCASES,IFTHEPURCHASERISFAMILIARWITHTHEPERFORMANCEOFTHEPUMPEGIDENTICALPUMPMODELORDER,AFACTORYNONWITNESSEDTESTMAYBEACCEPTABLE31132SIGNEDFACTORYTESTTESTPERFORMEDWITHOUTTHEPRESENCEOFAPURCHASERSREPRESENTATIVE,INWHICHTHEPUMPMANUFACTURERISRESPONSIBLEFORCOMPLIANCEWITHTHEPARAMETERSOFTHEAGREEDACCEPTANCECLASSNOTETHEPUMPMANUFACTURERCONDUCTSTHETEST,PASSESJUDGEMENTOFPUMPACCEPTANCEANDPRODUCESASIGNEDPUMPTESTDOCUMENTTHEADVANTAGEOFTHISTESTISTHESAMEASSEENONTHENONWITNESSEDTESTCOMPAREDTOAWITNESSEDTEST,THISTESTISSUBSTANTIALLYLESSEXPENSIVEANDOFTENLEADSTOACCELERATEDPUMPDELIVERYTOTHEENDUSER3114WITNESSEDPUMPTESTNOTETHEWITNESSINGOFAPUMPTESTBYAREPRESENTATIVEOFTHEPUMPPURCHASERCANSERVEMANYUSEFULFUNCTIONSTHEREAREVARIOUSWAYSOFWITNESSINGATEST31141WITNESSINGBYTHEPURCHASERSREPRESENTATIVETESTINGPHYSICALLYATTENDEDBYAREPRESENTATIVEOFTHEPURCHASER,WHOSIGNSOFFONTHERAWTESTDATATOCERTIFYTHATTHETESTISPERFORMEDSATISFACTORILYNOTEITISPOSSIBLEFORFINALACCEPTANCEOFTHEPUMPPERFORMANCETOBEDETERMINEDBYTHEWITNESSTHEBENEFITOFWITNESSTESTINGDEPENDSLARGELYONTHEEFFECTIVENESSANDEXPERTISEOFTHEWITNESSAWITNESSCANNOTONLYENSURETHETESTISCONDUCTEDPROPERLY,BUTALSOOBSERVESOPERATIONOFTHEPUMPDURINGTESTINGPRIORTOPUMPSHIPMENTTOTHEJOBSITEADISADVANTAGEOFWITNESSTESTINGCANBEEXTENDEDDELIVERYTIMESANDEXCESSIVECOSTWITHJUSTINTIMEMANUFACTURINGMETHODS,THESCHEDULINGOFWITNESSTESTINGREQUIRESFLEXIBILITYONTHEPARTOFTHEWITNESSANDCANLEADTOADDITIONALCOSTSIFTHESCHEDULEOFTHEWITNESSCAUSESDELAYSINMANUFACTURING31142REMOTEWITNESSINGBYTHEPURCHASERSREPRESENTATIVEPUMPPERFORMANCETESTINGWITNESSEDFROMADISTANCEBYTHEPURCHASERORHIS/HERREPRESENTATIVENOTEWITHAREMOTECAMERASYSTEM,THEPURCHASERCANMONITORTHEENTIRETESTINGREMOTELYINREALTIMETHERAWDATA,ASRECORDEDBYTHEDATAACQUISITIONSYSTEM,CANBEVIEWEDANDANALYSEDDURINGTHETEST,ANDTHERESULTSCANBEDISCUSSEDANDSUBMITTEDFORAPPROVALTHEADVANTAGESOFTHISTYPEOFTESTINGARESAVINGSINTRAVELCOSTSANDACCELERATEDPUMPDELIVERY2ISO2012ALLRIGHTSRESERVEDBSENISO99062012ISO99062012E32TERMSRELATINGTOQUANTITIES321ANGULARVELOCITYNUMBEROFRADIANSOFSHAFTROTATIONNOTE1ITISGIVENBY2N1NOTE2ITISEXPRESSEDINTIME,EGS1,WHERENISGIVENIN60MIN1322SPEEDOFROTATIONNUMBEROFROTATIONSPERSECOND323MASSFLOWRATERATEOFFLOWDISCHARGEDINTOTHEPIPEFROMTHEOUTLETCONNECTIONOFTHEPUMPNOTE1THEMASSFLOWRATEISGIVENINKILOGRAMSPERSECONDNOTE2THEFOLLOWINGLOSSESORLIMITINGEFFECTSAREINHERENTTOTHEPUMPADISCHARGENECESSARYFORHYDRAULICBALANCINGOFAXIALTHRUSTBCOOLINGOFTHEPUMPBEARINGSNOTE3LEAKAGEFROMTHEFITTINGS,INTERNALLEAKAGE,ETC,ARENOTTOBERECKONEDINTHERATEOFFLOWONTHECONTRARY,ALLDERIVEDFLOWSFOROTHERPURPOSES,SUCHASACOOLINGOFTHEMOTORBEARINGS,ANDBCOOLINGOFAGEARBOXBEARINGS,OILCOOLERARETOBERECKONEDINTHERATEOFFLOWNOTE4WHETHERANDHOWTHESEFLOWSSHOULDBETAKENINTOACCOUNTDEPENDSONTHELOCATIONOFTHEIRDERIVATIONANDOFTHESECTIONOFFLOWMEASUREMENTRESPECTIVELY324VOLUMERATEOFFLOWRATEOFFLOWATTHEOUTLETOFTHEPUMP,GIVENBYQQ2NOTEINTHISINTERNATIONALSTANDARD,THISSYMBOLMAYALSODESIGNATETHEVOLUMERATEOFFLOWINANYGIVENSECTIONITISTHEQUOTIENTOFTHEMASSRATEOFFLOWINTHISSECTIONBYTHEDENSITYTHESECTIONMAYBEDESIGNATEDBYSUBSCRIPTS325MEANVELOCITYMEANVALUEOFTHEAXIALSPEEDOFFLOW,GIVENBYUQA3NOTEATTENTIONISDRAWNTOTHEFACTTHATINTHISCASE,QMAYVARYFORDIFFERENTREASONSACROSSTHECIRCUIT326LOCALVELOCITYSPEEDOFFLOWATANYGIVENPOINTISO2012ALLRIGHTSRESERVED3BSENISO99062012ISO99062012E327HEADENERGYOFMASSOFLIQUID,DIVIDEDBYACCELERATIONDUETOGRAVITY,G,GIVENBYHY4GSEE3216328REFERENCEPLANEANYHORIZONTALPLANEUSEDASADATUMFORHEIGHTMEASUREMENTNOTEFORPRACTICALREASONS,ITISPREFERABLENOTTOSPECIFYANIMAGINARYREFERENCEPLANE329HEIGHTABOVEREFERENCEPLANEHEIGHTOFTHECONSIDEREDPOINTABOVETHEREFERENCEPLANESEEFIGUREA1NOTEITSVALUEISPOSITIVE,IFTHECONSIDEREDPOINTISABOVETHEREFERENCEPLANENEGATIVE,IFTHECONSIDEREDPOINTISBELOWTHEREFERENCEPLANE3210GAUGEPRESSUREPRESSURERELATIVETOATMOSPHERICPRESSURENOTE1ITSVALUEISPOSITIVE,IFTHISPRESSUREISGREATERTHANTHEATMOSPHERICPRESSURENEGATIVE,IFTHISPRESSUREISLESSTHANTHEATMOSPHERICPRESSURENOTE2ALLPRESSURESINTHISINTERNATIONALSTANDARDAREGAUGEPRESSURESREADFROMAMANOMETERORSIMILARPRESSURESENSINGINSTRUMENT,EXCEPTATMOSPHERICPRESSUREANDTHEVAPOURPRESSUREOFTHELIQUID,WHICHAREEXPRESSEDASABSOLUTEPRESSURES3211VELOCITYHEADKINETICENERGYOFTHELIQUIDINMOVEMENT,DIVIDEDBYG,GIVENBYU252G3212TOTALHEADOVERALLENERGYINANYSECTIONNOTE1THETOTALHEADISGIVENBYHXZXPXUX26G2GWHEREZISTHEHEIGHTOFTHECENTREOFTHECROSSSECTIONABOVETHEREFERENCEPLANEPISTHEGAUGEPRESSURERELATEDTOTHECENTREOFTHECROSSSECTIONNOTE2THEABSOLUTETOTALHEADINANYSECTIONISGIVENBY4ISO2012ALLRIGHTSRESERVEDBSENISO99062012ISO99062012EHXABSZXPXPAMBUX2GG2G3213INLETTOTALHEADOVERALLENERGYATTHEINLETSECTIONOFTHEPUMPNOTEINLETTOTALHEADISGIVENBYPU2H1Z111G2G3214OUTLETTOTALHEADOVERALLENERGYATTHEOUTLETSECTIONOFTHEPUMPNOTEOUTLETTOTALHEADISGIVENBYH2Z2P2U22G2G3215PUMPTOTALHEADALGEBRAICDIFFERENCEBETWEENTHEOUTLETTOTALHEAD,H2,ANDTHEINLETTOTALHEAD,H1789NOTE1IFCOMPRESSIBILITYISNEGLIGIBLE,HH2H1IFTHECOMPRESSIBILITYOFTHEPUMPEDLIQUIDISSIGNIFICANT,THEDENSITY,SHOULDBEREPLACEDBYTHEMEANVALUEM122ANDTHEPUMPTOTALHEADSHOULDBECALCULATEDBYFORMULA12P2PU2U2HZ2Z1121MG2GNOTE2THECORRECTMATHEMATICALSYMBOLISH123216SPECIFICENERGYENERGYOFLIQUID,GIVENBYYGH1011123217LOSSOFHEADATINLETDIFFERENCEBETWEENTHETOTALHEADOFTHELIQUIDATTHEMEASURINGPOINTANDTHETOTALHEADOFTHELIQUIDINTHEINLETSECTIONOFTHEPUMP3218LOSSOFHEADATOUTLETDIFFERENCEBETWEENTHETOTALHEADOFTHELIQUIDINTHEOUTLETSECTIONOFTHEPUMPANDTHETOTALHEADOFTHELIQUIDATTHEMEASURINGPOINT3219PIPEFRICTIONLOSSCOEFFICIENTCOEFFICIENTFORTHEHEADLOSSBYFRICTIONINTHEPIPEISO2012ALLRIGHTSRESERVED5BSENISO99062012ISO99062012E3220NETPOSITIVESUCTIONHEADNPSHABSOLUTEINLETTOTALHEADABOVETHEHEADEQUIVALENTTOTHEVAPOURPRESSURERELATIVETOTHENPSHDATUMPLANENOTE1NPSHISGIVENBYNPSHH1ZDPAMBPV131GNOTE2THISNPSHRELATESTOTHENPSHDATUMPLANE,WHEREASINLETTOTALHEADRELATESTOTHEREFERENCEPLANENOTE3ADEROGATIONHASBEENGIVENTOALLOWTHEUSEOFTHEABBREVIATEDTERMNPSHUPRIGHTANDNOTBOLDASASYMBOLINMATHEMATICALFORMULAEASACONSEQUENCEOFITSWELLESTABLISHED,HISTORICALUSEINTHISMANNER32201NPSHDATUMPLANEHORIZONTALPLANETHROUGHTHECENTREOFTHECIRCLEDESCRIBEDBYTHEEXTERNALPOINTSOFTHEENTRANCEEDGESOFTHEIMPELLERBLADES32202NPSHDATUMPLANEPLANETHROUGHTHEHIGHERCENTRESEEFIGURE1NOTEITISTHERESPONSIBILITYOFTHEMANUFACTURERTOINDICATETHEPOSITIONOFTHISPLANEWITHRESPECTTOPRECISEREFERENCEPOINTSONTHEPUMPKEY1NPSHDATUMPLANEFIGURE1NPSHDATUMPLANE3221AVAILABLENPSHNPSHANPSHAVAILABLEASDETERMINEDBYTHECONDITIONSOFTHEINSTALLATIONFORASPECIFIEDRATEOFFLOWNOTEADEROGATIONHASBEENGIVENTOALLOWTHEUSEOFTHEABBREVIATEDTERMNPSHAUPRIGHTANDNOTBOLDASASYMBOLINMATHEMATICALFORMULAEASACONSEQUENCEOFITSWELLESTABLISHED,HISTORICALUSEINTHISMANNER3222REQUIREDNPSHNPSHRMINIMUMNPSHGIVENBYTHEMANUFACTURERFORAPUMPACHIEVINGASPECIFIEDPERFORMANCEATTHESPECIFIEDRATEOFFLOW,SPEEDANDPUMPEDLIQUIDOCCURRENCEOFVISIBLECAVITATION,INCREASEOFNOISEANDVIBRATIONDUETOCAVITATION,BEGINNINGOFHEADOREFFICIENCYDROP,HEADOREFFICIENCYDROPOFAGIVENAMOUNT,LIMITATIONOFCAVITATIONEROSIONNOTEADEROGATIONHASBEENGIVENTOALLOWTHEUSEOFTHEABBREVIATEDTERMNPSHRUPRIGHTANDNOTBOLDASASYMBOLINMATHEMATICALFORMULAEASACONSEQUENCEOFITSWELLESTABLISHED,HISTORICALUSEINTHISMANNER6ISO2012ALLRIGHTSRESERVEDBSENISO99062012ISO99062012E3223NPSH3NPSHREQUIREDFORADROPOF3OFTHETOTALHEADOFTHEFIRSTSTAGEOFTHEPUMPASSTANDARDBASISFORUSEINPERFORMANCECURVESNOTEADEROGATIONHASBEENGIVENTOALLOWTHEUSEOFTHEABBREVIATEDTERMNPSHUPRIGHTANDNOTBOLDASASYMBOLINMATHEMATICALFORMULAEASACONSEQUENCEOFITSWELLESTABLISHED,HISTORICALUSEINTHISMANNER3224TYPENUMBERDIMENSIONLESSQUANTITYCALCULATEDATTHEPOINTOFBESTEFFICIENCYNOTE1ITISGIVENBYK2NQ1/2Q1/214GH3/4Y3/4WHEREQISTHEVOLUMERATEOFFLOWPEREYEHISTHEHEADOFTHEFIRSTSTAGENISGIVENINS1NOTE2THETYPENUMBERISTOBETAKENATMAXIMUMDIAMETEROFTHEFIRSTSTAGEIMPELLER3225PUMPPOWERINPUTP2POWERTRANSMITTEDTOTHEPUMPBYITSDRIVER3226PUMPPOWEROUTPUTHYDRAULICPOWERATTHEPUMPDISCHARGENOTEPUMPPOWEROUTPUTISGIVENBYPHQGHQY153227DRIVERPOWERINPUTPGRPOWERABSORBEDBYTHEPUMPDRIVER3228MAXIMUMSHAFTPOWERP2,MAXMAXIMUMPUMPSHAFTPOWER,ASSETBYTHEMANUFACTURER,WHICHISADEQUATETODRIVETHEPUMPOVERTHESPECIFIEDOPERATINGCONDITIONS3229PUMPEFFICIENCYPUMPPOWEROUTPUTDIVIDEDBYTHEPUMPPOWERINPUTNOTEPUMPEFFICIENCYISGIVENBYPH16P2ISO2012ALLRIGHTSRESERVED7BSENISO99062012ISO99062012E3230OVERALLEFFICIENCYPUMPPOWEROUTPUTDIVIDEDBYTHEDRIVERPOWERINPUTNOTEOVERALLEFFICIENCYISGIVENBYGRPH17PGR8ISO2012ALLRIGHTSRESERVEDBSENISO99062012ISO99062012E33SYMBOLSANDSUBSCRIPTSTABLE1ALPHABETICALLISTOFBASICLETTERSUSEDASSYMBOLSSYMBOLQUANTITYUNITAAREAM2DDIAMETERMEOVERALLUNCERTAINTY,RELATIVEVALUEFFREQUENCYS1,HZGACCELERATIONDUETOGRAVITYAM/S2HPUMPTOTALHEADMHJLOSSESINTERMSOFHEADOFLIQUIDMKEQUIVALENTUNIFORMROUGHNESSMKTYPENUMBERPURENUMBERLLENGTHMMTORQUENMNSPEEDOFROTATIONS1,MIN1NPSHNETPOSITIVESUCTIONHEADMPPRESSUREPAPPOWERWQMASSFLOWRATEBKG/SQVOLUMERATEOFFLOWCM3/SREREYNOLDSNUMBERPURENUMBERTOLERANCEFACTOR,RELATIVEVALUETSTUDENTSDISTRIBUTIONPURENUMBERUMEANVELOCITYM/SVLOCALVELOCITYM/SVVOLUMEM3YSPECIFICENERGYJ/KGZHEIGHTABOVEREFERENCEPLANEMZDDIFFERENCEBETWEENNPSHDATUMPLANEANDREFERENCEPLANESEE3220MEFFICIENCYPURENUMBERTEMPERATURECPIPEFRICTIONLOSSCOEFFICIENTPURENUMBERKINEMATICVISCOSITYM2/SDENSITYKG/M3ANGULARVELOCITYRAD/SAINPRINCIPLE,THELOCALVALUEOFGSHOULDBEUSEDNEVERTHELESS,FORGRADES2