BS PD CEN TR 13930-2009 Rotodynamic pumps. Design

PDCEN/TR13930:2009ICS23.080NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWPUBLISHEDDOCUMENTRotodynamicpumps—Designofpumpintakes—RecommendationsforinstallationofpumpsThisPublishedDocumentwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon28February2009©BSI2009ISBN9780580622472Amendments/corrigendaissuedsincepublicationDateCommentsPDCEN/TR13930:2009NationalforewordThisPublishedDocumentistheUKimplementationofCEN/TR13930:2009.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeMCE/6,Pumpsandpumptesting.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.PDCEN/TR13930:2009TECHNICALREPORTRAPPORTTECHNIQUETECHNISCHERBERICHTCEN/TR13930January2009ICS23.080SupersedesCR13930:2000EnglishVersionRotodynamicpumps-Designofpumpintakes-RecommendationsforinstallationofpumpsPompesrotodynamiques-Conceptiondesouvragesd'aspiration-Recommandationsd'installationdespompesKreiselpumpen-GestaltungderEinlaufbauten-EmpfehlungenzurInstallationderPumpenThisTechnicalReportwasapprovedbyCENon13October2008.IthasbeendrawnupbytheTechnicalCommitteeCEN/TC197.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,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,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:AvenueMarnix17,B-1000Brussels©2009CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.CEN/TR13930:2009:EPDCEN/TR13930:2009CEN/TR13930:2009(E)2ContentsPageForeword......................................................................................................................................................................3Introduction.................................................................................................................................................................41Scope..............................................................................................................................................................52General............................................................................................................................................................52.1Factorswhichinfluencetheoperationoftheplant...................................................................................52.2Generaldesignprinciplesforapumpingplant..........................................................................................63Plantwithverticalsuctioninlet....................................................................................................................73.1Generalarrangements...................................................................................................................................73.2Diameter(D)attheentranceofthebellmouthorthetaperedsuction.....................................................93.3Distance(C)betweenthebellmouthorthetaperedsuctioninletandfloor..........................................103.4Distancesbetweensuctioninletaxisandwalls.......................................................................................113.4.1Distance(L)betweensuctioninletaxisandsidewalls...........................................................................113.4.2Distance(E)betweensuctioninletaxisandrearwall.............................................................................113.5Submergence(S).........................................................................................................................................113.5.1Conditionstobesatisfiedforthedeterminationofsubmergence.........................................................113.5.2Determinationofsubmergence(S)............................................................................................................123.6Strainer.........................................................................................................................................................123.7Feedintake-Pumpenvironment...............................................................................................................133.7.1Feedintake...................................................................................................................................................133.7.2Immediateenvironmentofthepump.........................................................................................................203.8Caseofpumpingplantwithverticalsuctioninletandflowratelessthan50m3/h..............................234Plantwithintakewithtopsuctioninlet............................