ML17213B065
| ML17213B065 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 01/12/1983 |
| From: | FLORIDA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML17213B064 | List: |
| References | |
| NUDOCS 8302280276 | |
| Download: ML17213B065 (24) | |
Text
AUXILIARY FEEDWATER SYSTEMPUMPENDURANCE TESTREPORTPREPAREDFORTHEUNITEDSTATESNUCLEARREGULATORY COMMISSION BYPOWERPLANTENGINEERING JANUARY12,19838302280276 830225PDRADOCK05000389APDR.,I
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ABSTRACT.Thepurposeofthisreportistoprovidetheresultsoftheendurance testsperformed onallauxiliary feedwater pumpsduringtheSt.LucieUnit2preoperational testing.Testingwasperformed inaccordance withPreoperational TestProcedure 2-0700095,"Auxiliary Feedwater SystemEndurance Test".Dataofbearinghousingandbearingoiltemperature vstimeandpumproomambienttemperature vstimeforeachauxiliary feedwater pumpwasrecordedandplotted.Thepumpsperformance characteristics werealsoobservedandplotted.Thetestalsoexaminedthepumpstoensurethatallowable vibration limitswerenotexceeded.
Thetestdemonstrated thatbearinghousing,bearingoiltemperature andambienttemperature remainedwithinthedesigntemperature limits.Inaddition, thetestshowedthatvibration limitswerenotexceededandthatthepump'sperformance requirements weremaintained.
np>>II~n~n-IaaIa~,IfI~~~'~a'antfn'II~P~g~I>>i,aas>>I1IAkniq)iv1 INTRODUCTION TheAuxiliary Feedwater PumpEndurance TestfortheSt.LucieUnit2nuclearsitewasperformed betweenOctober8,1982andNovember7,1982.Thistestwasperformed asaresultofaUSNRCrecommendation.
Toimplement thisrecommendation, FPLcommitted toperformthistestandprovideacopyofthetestresults.Thisreportpresentsthetestresultsinfivesectionsasfollows:(1)Description ofthetestmethod(2)Resultsandconclusions demon-stratingthattemperature designlimitswerenotexceededforthepumpbearinghousing/bearing oil(3)Resultsandconclusions demonstrating thatpumproomambienttemperature didnotexceedenvironmental qualification temperature limitsforsafety-related equipment (4)Confirmation thatpumpvibration limitswerenotexceededand(5)Demonstration thatpumpperformance parameters weremaintained.
Attheendofthereport,conclusions arepresented.
HH[ll4~,<h~)'1Itg (1)TestProcedure Thetestwasperformed bypumpingwaterthrueachpumpbyeitherarecircu-lationlooptotheCondensate StorageTankorbyfeedingtheSteamGenerators asrequiredtosupportPre-coreHotFunctional Testing.Thetestinglastedaperiodofatleast48hours.Figures1,2and3showtheflowconfigurations usedforpump2A,2Band2C.Eachpumpwasstoppedattheendofthe48hourtestandallowedtocooldownbeforeitwasrestarted andrunforanadditional hour.Asummaryoftherelevanttestparameters arelistedinTable1.Table1-TestCondition PARAMETER PumHead(ftH20)2AAFWPump2BAFWPump2CAFWPumpPUMPFLOW(GPM)2AAFWPump2BAFWPump2CAFWPumpOperating TestCondition 3058-29602991-2933304050-170*50-170*70**Design0eratinCondition 266026602660300300570*Includes50GPMrecirculation flow**Includes70GPMrecirculation flowPUMPSPEED(RPM)2CAFWPumpSteamInletTemerature(F)2CAFWPumpSteamInlettemperature 3750-3850518F-532F3750RPM512F-544oF(2)Bearinghousing/bearing oiltemperatures fortheAFWpumpdriver,inboardandoutboardbearingswererecorded(Tl-T4)asafunctionoftime.Theresultsarepresented infigures3thru6andtheydemonstrate thatthepump/driver designtemperature limitsforthesebearingswerenotexceededduringthetests.(3)Figures3thru6alsocontainthepumproomambienttemperatures (T5)versustime.Ascanbeseenfromtherecordedresults,asteadyandacceptable ambientroomtemperature wasmaintained throughout theendurance testandenvironmental qualification temperature limitswerenotexceededforsafetyrelatedequipment.
(4)Pumpvibration datawasrecordedduringtheendurance testsusingacalibrated hand-held vibrometer.
TheresultsindicatethatAFWpumpvibration
~~~*\~4~44~h~Iil~~I~~III~~~~~1~~~1'4 didnotexceedallowable limitsestablished byplantprocedures.
(5)Auxiliary Feedwater Pumpperformance characteristics (basedonassumedrecirculation flow)wererecordedduringtheendurance test.Theresultsarepresented infigures7through9anddemonstrate acceptable performance.
CONCLUSIONS ThisreportpresentstheresultsofSt.LucieUnit2AFl<pump2A,2B,and2Cendurance testsperformed asaresultofaUSNRCrecommendation.
Theresultsdemonstrate thatthepumpsremainwithindesignlimitswithrespecttobearinghousing/bearing oiltemperature andvibration, thatthepumproomambienttemperature didnotexceedenvironmental qualification temperature limitsforsafety-related equipment intheroomandthatthepumps'erformance characteristics wereacceptable.
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