ML17053A858
| ML17053A858 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 04/29/1969 |
| From: | NIAGARA MOHAWK POWER CORP. |
| To: | |
| Shared Package | |
| ML17053A854 | List: |
| References | |
| NUDOCS 7907300181 | |
| Download: ML17053A858 (8) | |
Text
PHILADELPHIA GEARCORPORATION KINGOF,PRUSSIA,PENNA.19406LIMITORQUE VALVECONTROL'ADDENDUM NUMBERNITESTOFLIMITORQUE VALVE,OPERATORTOMEETGENERALREQUIREMENTS OFAN,ELECTRICVALVEACTUATORINNUCLEARREACTORCONTAINMENT ENVIRONMENT REPORTOFJANUARY2,1969A.SHOCKScVIBRATION TESTB.TESTOFLIMITSWITCHNITHMATERIALCHANGEAPRIL29,1969<<>goi$(
/kA
~~I~~aE~(o-\TESTREPORT-.APRIL29,1969A.SHOCKANDVIBRATION TEST=Y',TheL'imitorque OperatorsizeSMB-0witha15footpound,3phase,60cycle,440voltmotor,nameplate order5338164wasshippedtoLockheedElectronics Companyenvironmental labratory andtestedonMarch10,1969.TestProcedure The.testspecimenwassecuredtoavibration machineandsubjected to-fivecyclesofvibration inboththeverticalaxisandthehorizontal axis.Eachcycleconsisted oftwominutesofvibration atafrequency ofthirty-five (35)cpsandanacceleration levelofthree(3)"G's",followedbyoneminuteofnovibration.
Vibration scanswerealsoconducted inbothaxisofvibration betweenfivetothirty-five cpstodetermine thepresenceofany'Iresonances.
Visualinspections forevidenceofanyexternalphysicaldamagewereconducted throughout thevibration testing.Thevibration testwascompleted withnovisualevidenceofanyexternalphysi-caldamage.Noresonances weredetecteddu'ringthevibration scans.<'rr.TheaboveisincludedinLockheedElectronics CompanyTestReport02268-4618.
40
~)PageApril29,1969Thepreviousshockandvibration testofaLimitorque Operatorwasextendedto'16and25cps.Theabovetestextendedthelevelto3G'sat35cps.B.'ESTOFGEAREDLIMITSNITCHNITHMATERIALCHANGE:On,theprevioustestofaLimitorque Operatorassubmitted January2,1969,afailureoccurredduetotheactionofthechemicalsprayonthematerialofthegearframeofthegearedlimit,switch.Thi,scausedthepremature, failureofthegearedlimitswitch.Thegearframematerialhasbeenchangedasprev-iouslyrecommended andanadditional testofthisrevisedgearedlimitswitchha'sbeenconducted atTheFranklinInstitute ResearchLabratories inPhiladelphia, Pennsylvania onApril9throughApril16,1969.Thegearedlimitswitchwasplacedinthesameenvironmental chamberastheprevioustestandwasusedinconjunction withstartingandstoppinganelectricmotoralsointhetestchamber.Theenvironment consisted ofasevendaytestwhereinthegearedlimitswitchwasexposedtohighsteampres'sure, temperature andchemicalenvironment similartotheprevioustest.Thenewgearedlimitswitchsuccessfully completed thetestwithnosignofwearordeterioration duetothesteampressure, 0'
Page3'pril29,1969temperature orchemicalenvironment.
Thetestwascompletely satisfactory ineveryrespect.CONCLUSION:
ThematerialchangeofthegearedlimitswitchhasbeennotedandwillbeincludedonallLimitorque Operators subjected tothisenvironmental condition whenspecified.
~Thisinformation issubmitted asanaddendumtoourTestReportdatedJanuary2,l969.Verytrulyyous,EdwardF.LawsonSalesManagerLimitorque DivisionEFL/s1s