Vertical Pump Tests - ANSI/HI 2.6: 2000 - the Hydraulic Institute

ContentsPageForeword ....................................................... v2.6 Test................................................... 12.6.1 Scope................................................. 12.6.2 Typesoftests........................................... 12.6.3 Terminology ............................................ 12.6.4 Hydrostatictest(optional).................................. 82.6.5 Performancetest......................................... 92.6.6 Netpositivesuctionheadrequiredtest(optional)............... 182.6.7 Mechanicaltest(optional)................................. 222.6.8 Measurementofrateofflow............................... 242.6.9 Headmeasurement ..................................... 272.6.10 Powermeasurement..................................... 312.6.11 Speedmeasurement..................................... 322.6.12 Temperaturemeasurementandinstruments.................. 322.6.13 Modeltests............................................ 32AppendixA References.......................................... 36AppendixB Index .............................................. 37Figures2.63—Datumelevationsforvariouspumpdesigns...................... 42.65—Totalsuctionhead–opensuction.............................. 42.64—Firststageimpellerdatumclosedsuction–canpump.............. 42.66—Totalsuctionhead–closedsuction ............................ 52.67—Totalhead–opensuction.................................... 52.68—Totalhead–closedsuction................................... 62.69—Bowlassemblyperformancetest–opensump................... 112.70—Pumpperformancetest–closedsuction ....................... 122.71—Pumpperformancetest–closedloop.......................... 122.72—Pumpperformancecurves .................................. 162.73—SuctionthrottlingNPSHtestconstantsumplevel................. 192.74—LevelcontrolNPSHtest .................................... 192.75—ClosedloopNPSHtest..................................... 192.76—ClosedloopNPSHtest–alternatearrangementforcanpump ...... 202.77—NPSHatconstantrateofflow................................ 202.78—NPSHatconstantrateofflow................................ 212.79—NPSHatvaryingrateofflow................................. 212.80—Pressuretapopening ...................................... 25Copyright © 2000 By Hydraulic Institute, All Rights Reserved.iii

2.81 — Welded-onpressuretapopening ............................. 252.82 — Singletapconnection ...................................... 282.83 — Loopmanifoldconnectingpressuretabs........................ 282.84 — Gauge/valve arrangement. .................................. 282.85 — Bowlassemblyheadmeasurement ........................... 292.86 — Total head measurement – canpump.......................... 292.87 — Total head measurement – wetpit ............................ 302.88 — Gaugebelowatmosphericpressure........................... 302.89 — Fluid gauge with air leg below atmospheric pressure . . . . . . . . . ..... 30Tables2.11 — Symbols.................................................. 22.12 — Subscripts................................................ 32.13 — Recommendedinstrumentcalibrationinterval ................... 102.14 — Straight pipe required following any fitting before venturi meter indiametersofpipe................................................ 262.15 — Straight pipe required following any fitting before nozzle or orificeplatemeterindiametersofpipe..................................... 262.16 — Straight pipe required following downstream pressure tap of anozzleororificeplatemeterbeforeanyfittingindiametersofpipe.......... 27ivCopyright © 2000 By Hydraulic Institute, All Rights Reserved.