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{{#Wiki_filter:~~L4~PHILADELPHIAGEARCORPORATIONKINGOFPRUSSIA,PENN.19406LIMITORQUEVALVECONTROLTESTOFLIMITORQUE'ALVEOPERATOR.TOMEETGENERALREQUIREMENTSOFANELECTRICVALVEACTUATORINNUCLEARREACTORCONTAINMENTENVIRONMENTTESTREPORT3'ANUARY2,1969sooEGG~gogS | |||
TESTREPORT-JANUARY2,1969ENGINEERINGORDERNO.600198TheLimitorquevalveoperatortestedwasModelSMB-0witha15foot:pound,3phase,60cycle,440voltmotor,w~ithseg~~ightemperaturemotorinsulationandhightemperatureresistantnon-\,e~r~~~~Wmetalliccomponents,towithstandthe~contemplatedsteampressure,hightemperatureandchemicalconditionsexpected.in.theeventofanuclearreactorfailure.within.the,.containmentvessel.TheLimitorque.operatorwaswiredforatorqueseatingcontrolforclosingdirectionandpositionlimitingcontrolforopendirection.'IA23/8"diameterby1/4"pitch,1/4"lead,lefthandstemwasusedtosimulatethestemofavalvebeingopenedandclosedThespeedofoperationwasapproximately6"perminuteovera12"travel.LThedesignedseatingthrusttobeexertedonthe.stembytheLimitorquevalvecontrolwas16,500poundsofthrustintheclosedpositionofthevalvestem.Aslidewireelectricpositiontrans-mitter.wasalsoinstalledandconnectedtoaremotepositionreceiveroutsidethetestchamber.TESTSTOBEPERFORMEDONOPERATOR1.Preliminaryheattestsoncomponentparts.2.Preliminaryheattestsonactuator.3.Preliminarylivesteamtestonactuator.4.Heatagingtestofelectricmotorandelectricmotorwithbrake. | |||
5.Shockandvibrationtestofactuatortosimulateseismicconditions.6.l50lifecycletestofactuatorproducingapproximately16,500poundsofthrust.7',TestofLimitorquevalveoperatorandelectricbrakemotorunderasimulatedreactorcontainmentpost-accidentsteamandchemicalenvironment. | |||
l.PRELIMINARYHEATTESTSONCOMPONENTPARTSThestandardLimitorqueoperatorgearedlimitswitchandtorqueswitchwassubjectedtoadryheattestforapproxi-mately16hoursatatemperatureof375'F.Periodicallyduringthistest,theswitcheswereremovedfromtheovenandactuatedbyhand.Theoperationwassatisfactoryandnomal-'unctionsoccurred.Allpartsfunctionedfreelyandtherewasnobinding,jamming,norabnormaldistortionof.parts.Thetestwassuccessfulinallrespects.2.~PRELIMINARYHEATTESTSONACTUATORAcompletelyassembledandoperationalLimitorqueoperatorwasplaced.inanovenwherethetemperaturewasmaintainedatapproximately325'F.foradurationof12hours.Theunitwaselectricallyoperatedeverythirtyminutesforaperiodofapproximatelytwominutespercycleandusingthegearedlimitswitchestostoptheactuatoratthefullopenandfullclosedpositionoftravel.Indicatinglightcircuitswerealsowired.tothegearedlimitswitches.Thetestwassuccessfulineveryrespect.Therewerenomalfunctionsoftheoperatoranduponinspectionofthecom--ponen'tpartsused,therewasnonoticeabledeteriorationorwear.Thelubricantusedinhegearedlimitswitchdidbecomehardandcaked,howeverthelubricantusedintheLimitorque | |||
gearhousingremainedpliableandhaditsoriginalconsistency.ItwasdeterminedthatthegreaseinthegearedlimitswitchgearhousingshouldbechangedtothesamegreaseasintheLimitorqueoperatorgearhousing.3'..PRELIMINARYLIVESTEPSTESTONACTUATOR~AcompleteLimitorqueactuatorwassetupforelectricaloperationandlivesteamwaspipedintotheconduittapsonthetopofthelimitswitchcompartment.Oneofthebottomconduittapswasleftopentodrainoffanycondensate.Theoperatorwassetuponatimerbasisforoperationoveraperiodofapproximatelyninehoursandoperatingeverythirtyminutesfortwominutespercycle.Duringthistest,thelivesteamintheswitchcompartmentseemedtohavenoeffectwhateveronthefunctionofthe.limitswitchesin'heircontroloftheoperatoratthefull.openandfullclosedpositionoftravel.Inaddition,thelimitswitcheswerewireduptoindicatinglightswhichoperatedsatisfactorily.Thetestwassuccessfulandtherewasnonoticeableeffectonthefunctionofanyofthepartsinthelimitswitchcom-partment.4.HEATAGINGTEST.OFELECTRICMOTORANDELECTRICMOTORWITHBRAKETheelectricmotorfortheLimitorqueoperatortobeusedintheenvironmenttestandanotherelectricmotorequippedwithadisktypebrakeweresub'jectedtoaheatagingtest. | |||
BothelectricmotorsweresenttoReliance,ElectricCo.forheatagetesting.Thistestconsistedofbakingthemotorsatatemperatureof180'C.foratotalof100hourstosimulateagingthemotortoa40yearlifeexpectancy.Motorinsulationcheckswere.madeandfound.to.bewithinnormallimits.There.werenoadverseeffectsonthemotorsandmotorinsulationresi'stancemeasured'infinitytoground.5..SHOCKANDVIBRATIONTESTOFACTUATORTOSIMULATESEISMICCONDITIONSTheLimitorqueoperatortobeusedintheenvironmenttestwasshippedcompletetotheLockheedElectronicsCo.,inPlain-.field,NewJersey,forshockandvibrationtestingtosimulateseismicconditions.Acopyofthisreportisenclosedherewith.ThetestbasicallyconsistedofmountingtheLimitorqueoperatoronashockandvibrationtabletotestitat'20cyclespersecondvibrationat.1Gloadforaperiodoftwominutesononeminuteoff.Thiswouldconstituteonecycle.Thecyclewasrepeatedfivetimesinboththeverticalandhorizontalaxisoftheoperator.Theactualtestreportandphotographsareincludedhere.ThetestwassuccessfulandtherewasnonoticeableeffectwhatsoeverontheLimitorqueoperator. | |||
,~~~6~150LIFECYCLETESTOFLIMITORQUEOPERATORPRODUCINGAPPROXIMATELY16,500POUNDSTHRUSTTheLimitorqueoperatorwasshippedtotheFranklinInstituteResearchLaboratories,Philadelphia,Pennsylvania.Theoperatorwasmountedonastandinsidethetestchamberanda150cycleloadtestwasmadeontheunit.Thistestconsistedofstrokingthe23/8"diametervalvestematotalofapproximately12inchesintwominutes.Thevalvesteminthefullclosedpositionproducedathrustof16,500poundsonarigidplatesecurelyboltedtothetestchamber.Thethrustwasmeasuredbythesamestrain-gaugerecordinginstru-mentusedintheactualenvironmentaltestconductedbytheFranklinInstitute.Theunitwaswiredupsothattheclosing(y.directionandtheopenpositiongearedlimitswitchstoppedtheunitinthefullopenposition.Thespeedof.travelwas6inchesperminute.Afterthelifecycletestingwascompleted,theunitwasinspectedand-foundtobeinexcellentcondition.Therewasnonoticeablewearonanyoftheparts.ThesameelectricImotorwhichhadbeenheatagetestedatRelianceElectricCo.wasusedforthislifeCycletest.Therewasnonoticeableadverseeffectontheelectricmotorandit.functionedproperly.7.TESTOFLIMITORQUEVALVEOPERATORUNDERSIMULATED'REACTORCONTAINMENTPOST-ACCIDENTSTEAMANDCHEMICALENVIRONMENTTheattachedreportoftheFranklinInstituteResearchLaboratoriesdescribestheactualtestingunderthisenviron- | |||
wmentalcondition.Afterthetest.wascompleted,theLimitorqueoperatorwasshippedbacktoPhiladelphiaGearCorporation,KingofPrussia,'ennsylvaniawhereitwasdisassembledandall.partswereinspected.'hotographsareincludedshowingthevarious-partsoftheoperator.Allparts,includingtheelectricmotor,slidewereposition'ransmitter,.seals,bearings,gears,andshafts,wereinspectedandnonoticeablewearwasnoted.However,thegearframe.ofthegearedlimit.switchhadcorrodedandcausedaminorfailure.Thegearedlimitswitchframehadbeenattackedbytheboricacidinthesteamatmosphere.Thiscausedthegearframetocorrodeand..resultedinbinding,upoftheshaftsofthegearedlimitswitchwheretheyextendthroughthegearedlimitswitchhousing.ThiscausedthemalfunctionoftheswitchasdescribedintheFranklinInstituteResearchLabor-atories'eport.Amaterialchangehasbeeninstitutedtocorrectthiscorrosiveactionofthematerialusedinthatparticularswitch.Onallpresent'ordersbeingprocessed,andonallfutureunitstobeshippedtomeetenvironmentalconditionssuchasthis,thegearframehousingofthegeared'limitswitchwillbeabronzematerialwhichisnotsubjectltocorrosionbyboricacidsolutions.Themotorinsulationresistanceafteralltestingwas1,000megohmsacrossall'threemotorterminalstogroundat500volts. | |||
}} | }} |
Revision as of 13:37, 29 April 2018
ML17053A853 | |
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Site: | Nine Mile Point ![]() |
Issue date: | 01/02/1969 |
From: | FRANKLIN INSTITUTE |
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Text
~~L4~PHILADELPHIAGEARCORPORATIONKINGOFPRUSSIA,PENN.19406LIMITORQUEVALVECONTROLTESTOFLIMITORQUE'ALVEOPERATOR.TOMEETGENERALREQUIREMENTSOFANELECTRICVALVEACTUATORINNUCLEARREACTORCONTAINMENTENVIRONMENTTESTREPORT3'ANUARY2,1969sooEGG~gogS
TESTREPORT-JANUARY2,1969ENGINEERINGORDERNO.600198TheLimitorquevalveoperatortestedwasModelSMB-0witha15foot:pound,3phase,60cycle,440voltmotor,w~ithseg~~ightemperaturemotorinsulationandhightemperatureresistantnon-\,e~r~~~~Wmetalliccomponents,towithstandthe~contemplatedsteampressure,hightemperatureandchemicalconditionsexpected.in.theeventofanuclearreactorfailure.within.the,.containmentvessel.TheLimitorque.operatorwaswiredforatorqueseatingcontrolforclosingdirectionandpositionlimitingcontrolforopendirection.'IA23/8"diameterby1/4"pitch,1/4"lead,lefthandstemwasusedtosimulatethestemofavalvebeingopenedandclosedThespeedofoperationwasapproximately6"perminuteovera12"travel.LThedesignedseatingthrusttobeexertedonthe.stembytheLimitorquevalvecontrolwas16,500poundsofthrustintheclosedpositionofthevalvestem.Aslidewireelectricpositiontrans-mitter.wasalsoinstalledandconnectedtoaremotepositionreceiveroutsidethetestchamber.TESTSTOBEPERFORMEDONOPERATOR1.Preliminaryheattestsoncomponentparts.2.Preliminaryheattestsonactuator.3.Preliminarylivesteamtestonactuator.4.Heatagingtestofelectricmotorandelectricmotorwithbrake.
5.Shockandvibrationtestofactuatortosimulateseismicconditions.6.l50lifecycletestofactuatorproducingapproximately16,500poundsofthrust.7',TestofLimitorquevalveoperatorandelectricbrakemotorunderasimulatedreactorcontainmentpost-accidentsteamandchemicalenvironment.
l.PRELIMINARYHEATTESTSONCOMPONENTPARTSThestandardLimitorqueoperatorgearedlimitswitchandtorqueswitchwassubjectedtoadryheattestforapproxi-mately16hoursatatemperatureof375'F.Periodicallyduringthistest,theswitcheswereremovedfromtheovenandactuatedbyhand.Theoperationwassatisfactoryandnomal-'unctionsoccurred.Allpartsfunctionedfreelyandtherewasnobinding,jamming,norabnormaldistortionof.parts.Thetestwassuccessfulinallrespects.2.~PRELIMINARYHEATTESTSONACTUATORAcompletelyassembledandoperationalLimitorqueoperatorwasplaced.inanovenwherethetemperaturewasmaintainedatapproximately325'F.foradurationof12hours.Theunitwaselectricallyoperatedeverythirtyminutesforaperiodofapproximatelytwominutespercycleandusingthegearedlimitswitchestostoptheactuatoratthefullopenandfullclosedpositionoftravel.Indicatinglightcircuitswerealsowired.tothegearedlimitswitches.Thetestwassuccessfulineveryrespect.Therewerenomalfunctionsoftheoperatoranduponinspectionofthecom--ponen'tpartsused,therewasnonoticeabledeteriorationorwear.Thelubricantusedinhegearedlimitswitchdidbecomehardandcaked,howeverthelubricantusedintheLimitorque
gearhousingremainedpliableandhaditsoriginalconsistency.ItwasdeterminedthatthegreaseinthegearedlimitswitchgearhousingshouldbechangedtothesamegreaseasintheLimitorqueoperatorgearhousing.3'..PRELIMINARYLIVESTEPSTESTONACTUATOR~AcompleteLimitorqueactuatorwassetupforelectricaloperationandlivesteamwaspipedintotheconduittapsonthetopofthelimitswitchcompartment.Oneofthebottomconduittapswasleftopentodrainoffanycondensate.Theoperatorwassetuponatimerbasisforoperationoveraperiodofapproximatelyninehoursandoperatingeverythirtyminutesfortwominutespercycle.Duringthistest,thelivesteamintheswitchcompartmentseemedtohavenoeffectwhateveronthefunctionofthe.limitswitchesin'heircontroloftheoperatoratthefull.openandfullclosedpositionoftravel.Inaddition,thelimitswitcheswerewireduptoindicatinglightswhichoperatedsatisfactorily.Thetestwassuccessfulandtherewasnonoticeableeffectonthefunctionofanyofthepartsinthelimitswitchcom-partment.4.HEATAGINGTEST.OFELECTRICMOTORANDELECTRICMOTORWITHBRAKETheelectricmotorfortheLimitorqueoperatortobeusedintheenvironmenttestandanotherelectricmotorequippedwithadisktypebrakeweresub'jectedtoaheatagingtest.
BothelectricmotorsweresenttoReliance,ElectricCo.forheatagetesting.Thistestconsistedofbakingthemotorsatatemperatureof180'C.foratotalof100hourstosimulateagingthemotortoa40yearlifeexpectancy.Motorinsulationcheckswere.madeandfound.to.bewithinnormallimits.There.werenoadverseeffectsonthemotorsandmotorinsulationresi'stancemeasured'infinitytoground.5..SHOCKANDVIBRATIONTESTOFACTUATORTOSIMULATESEISMICCONDITIONSTheLimitorqueoperatortobeusedintheenvironmenttestwasshippedcompletetotheLockheedElectronicsCo.,inPlain-.field,NewJersey,forshockandvibrationtestingtosimulateseismicconditions.Acopyofthisreportisenclosedherewith.ThetestbasicallyconsistedofmountingtheLimitorqueoperatoronashockandvibrationtabletotestitat'20cyclespersecondvibrationat.1Gloadforaperiodoftwominutesononeminuteoff.Thiswouldconstituteonecycle.Thecyclewasrepeatedfivetimesinboththeverticalandhorizontalaxisoftheoperator.Theactualtestreportandphotographsareincludedhere.ThetestwassuccessfulandtherewasnonoticeableeffectwhatsoeverontheLimitorqueoperator.
,~~~6~150LIFECYCLETESTOFLIMITORQUEOPERATORPRODUCINGAPPROXIMATELY16,500POUNDSTHRUSTTheLimitorqueoperatorwasshippedtotheFranklinInstituteResearchLaboratories,Philadelphia,Pennsylvania.Theoperatorwasmountedonastandinsidethetestchamberanda150cycleloadtestwasmadeontheunit.Thistestconsistedofstrokingthe23/8"diametervalvestematotalofapproximately12inchesintwominutes.Thevalvesteminthefullclosedpositionproducedathrustof16,500poundsonarigidplatesecurelyboltedtothetestchamber.Thethrustwasmeasuredbythesamestrain-gaugerecordinginstru-mentusedintheactualenvironmentaltestconductedbytheFranklinInstitute.Theunitwaswiredupsothattheclosing(y.directionandtheopenpositiongearedlimitswitchstoppedtheunitinthefullopenposition.Thespeedof.travelwas6inchesperminute.Afterthelifecycletestingwascompleted,theunitwasinspectedand-foundtobeinexcellentcondition.Therewasnonoticeablewearonanyoftheparts.ThesameelectricImotorwhichhadbeenheatagetestedatRelianceElectricCo.wasusedforthislifeCycletest.Therewasnonoticeableadverseeffectontheelectricmotorandit.functionedproperly.7.TESTOFLIMITORQUEVALVEOPERATORUNDERSIMULATED'REACTORCONTAINMENTPOST-ACCIDENTSTEAMANDCHEMICALENVIRONMENTTheattachedreportoftheFranklinInstituteResearchLaboratoriesdescribestheactualtestingunderthisenviron-
wmentalcondition.Afterthetest.wascompleted,theLimitorqueoperatorwasshippedbacktoPhiladelphiaGearCorporation,KingofPrussia,'ennsylvaniawhereitwasdisassembledandall.partswereinspected.'hotographsareincludedshowingthevarious-partsoftheoperator.Allparts,includingtheelectricmotor,slidewereposition'ransmitter,.seals,bearings,gears,andshafts,wereinspectedandnonoticeablewearwasnoted.However,thegearframe.ofthegearedlimit.switchhadcorrodedandcausedaminorfailure.Thegearedlimitswitchframehadbeenattackedbytheboricacidinthesteamatmosphere.Thiscausedthegearframetocorrodeand..resultedinbinding,upoftheshaftsofthegearedlimitswitchwheretheyextendthroughthegearedlimitswitchhousing.ThiscausedthemalfunctionoftheswitchasdescribedintheFranklinInstituteResearchLabor-atories'eport.Amaterialchangehasbeeninstitutedtocorrectthiscorrosiveactionofthematerialusedinthatparticularswitch.Onallpresent'ordersbeingprocessed,andonallfutureunitstobeshippedtomeetenvironmentalconditionssuchasthis,thegearframehousingofthegeared'limitswitchwillbeabronzematerialwhichisnotsubjectltocorrosionbyboricacidsolutions.Themotorinsulationresistanceafteralltestingwas1,000megohmsacrossall'threemotorterminalstogroundat500volts.