ML17037B964

Nine Mile Point Generating Station, Units 1 and 2 - Request for Additional Information Related to the Design of the Containment of the Facility

ML17037B964
Person / Time
Site:	Nine Mile Point
Issue date:	04/21/1975
From:	Stolz J F Office of Nuclear Reactor Regulation
To:	Rhode G R Niagara Mohawk Power Corp
References
Download: ML17037B964 (8)

Text

9Rocket1lo,50-410APR211975k'iagara)JohannpowerCorporationAY'XV:Nr.CeraldTi.Bho@eVicePresident-Enpineerinp3QOErieboulevardUestSyracuse',PetrYork)3202CentletEen:Pursuantto550.54(f)of10CP"Part50,thol'IuClearRegulatoryCormiasien(DEC)staffrequiresthat,certaininfozrationrelatedtothe'esignofthecontainmentforyourfacility'esubmittedpromptlytoL,BCforitsreviev..%isisrequireE1entresultsfgoarecentdevelopr;entsassociatedwithouron-goingrevieuareaofEr,Rplantswithpressuresupp'ression-typocontains.entoandthecapabilityofthesuppressionpoolretaininpstructurestotolerateloadsdueto'operationofth~primarysystempressurereliefvalves.Experienceatseveraloperating;Eblisplantahasindicatedthatloadsduetoreliefvalveact1$ationraynothavebeenfullyconsideredinthestructuraldesi~aofthesuppressionchaw'ber.Xnaddition,theCeneralElectricCompanyisno19Pr'eparingtostartaseriesofsrM111-scalereliefvalvetestsckichvillbeusedtoverifyanalyticalpredictionsoftheseloadsaaapplicabletoal$classesofplants.Pooldynaoicloadsdu~toreliefvalve-operationareduetotwodistinctphenomena.Pizat$pressureT1avesaregeneratedwithinthesuppressionpool';hen,onfirstopening,$r@11+fvalvesdischargehighpressureairfol1owedbyel*eauintothepooleater.Thoseare,referredtoasstear1ventclearingloads."econ4$st,eaT3quenchingvibrationscanaccorpanye-tenddreliefvalvediacharpeintothepoolifthewaterisatanelevatedtemperature.The,enclosurespecifiestheinfortationpertainingtotheseeffects,T'hichcevillrequirett3ceapleteourreviewofyour,designvithregardtothesephenomena.Youpresponsetothisrequestforinformationshouldbefiledwithinninetydays,of'hedateofreceiptofthisletter.Xfyoucannotr1eetggUt1sschedule9pleaseBdv1seuaQlthlnf1fteendays.,OFFICE%SURNAMEI$DATE+FormAEC-318(Rev.9-53)AECM02+*II.d.OOVddNNCNTJAINTINOOFTICd)1929~99,2$$

8C~~H 0NiagaraNohawkPowerCorporation Pleasecontactusifyoudesireadditionaldiscus'sionorclarificationoftheinformationrequested.Sincerely,OriginalSignedbgD.e.Id,4cogJohnP.Stolz,ChiefLightWaterReactorsBranch2-1DivisionofReactorLicensing

Enclosure:

'equestforAdditionalInformationThisrequestforGenericInformationwasapprovedbyGAOunderablanketClearanceNo.B-180225(R0072);thisclearanceexpiresJuly31,1977.cc:LeBoeuf,Iamb,Leiby&HacRaeATTN:Hr.Arvi'nE.Upton,Esq.1737NStreet,N.W.WashingtonD.C.20036J.BruceHacDonald,Esq.,DeputyCommissionerandCounselNewYoikStateDepartmentofCommerce99WashingtonAvenueAlbany,NewYork12210CarmineJ.Clemente,Esq.NewYorkStateAtomicEnergy'ouncil"DepartmentofCommerce99WashingtonAvenueAlbany,NewYork12210AnthonyZ.Roisman,Esq.'erlin,RoismanandKessler1712NStreet,N.IU.Washington,D.C.20036tbcc:EHissSuzanneWeber,78WestSenacaStreetOswego,NewYork13126Hr.RichardGoldsmithSyracuseUniversityCollegeofLawE.I.IUhiteHall,CampusSyracuse,NewYork13210J.R.Buchanan,ORNLThomasB.Abernathy,DTIEDISTRIBUTION:NRCPDRLocalPDRBranchFileDocketFileR.KleckerF.IUilliamsF.SchroederV.MooreA.KennekeR.DeYoungELDIE(3)IU.kaneH.SmithACRS(14)TRBranchesLIUR2BC'sJ.NorrisL'LUR-1IrOFFICEDSURI4AMEQbATEQ4$ILUFormAEC-318(Rev.9-53)AECM0240L:LIUR2-1J44ZJ7S*V,S,COVCRNIICN2PRIN2INOOPFICCII52$~55~555 0Qi)I,8~.'-~lj;gi'~gHr""~wJ1/n' 0'REUESTFORADDITIOlcKLi"OP~~fATIOalRELIEFVALVELOwJ)S1.Specifythenumberofsafetyreliefvalves,theirdesignflowrate,anddischargelinesize.Providealistingofoperatingconditionsunderwhichthese:valveswouldbeoperatedeithermanuallyorauto-matically.Describe,withtheaiddischargelineto,andorientationofdrawings,theroutingofthein,thesuopressionpool,andthedesignofthedischargelineexit.2.Providetheloadspecificationforthesuppressionchaberstructuretoaccommodateadtuationofoneormoresafetyreliefvalves.I3.Providethedesignloadcapabilityforthesuppressionchamberstructure.4.Providejustificationfortheloadspecificationgivenin(2)abovebytheuseofappropriateexperi-entaldataandanalysis.IftheGeneralElectric(GE)Companyisresponsibleforspecifyingtheseloads,astatementtothateffectissufficient.'.Identify,withtheaidofdrawings,anycomponentsorstructuresinthesuppressionpoolregion,otherthantheboundingwallsofthesuppressionchamber,andthelocationofsuchcomponentsrelativetothereliefvalvedischargelineexits.Discussthestructuralcapabilityofthesecomponentstoaccommodateloadsduetoreliefvalveactuation.6.Estimatethemaximumnumberofsingleandmultiplereliefvalveopeningsoverthelifeofyourplant.

~/+40 7.identifythemaximumtemperaturelimitsofthesuppressionpoolwiththereactoratpower.ThistemperaturelimitshouldincludeIprovisionsforthetestingrequirementsofreliefvalves./8.Specifytheoperatoractionsthatareplannedwhenspecifiedtemperaturelimitsareexceeded.9.Presentthetemperaturetransientofthesuppressionpoolstartingfromthespecifiedlimitsin(1)forthefollowingtransients:(a)mainsteamlineisolation;(b)'emi-automticblowdown;.and,(c)stuckopenreliefvalve..Forpurposesofthisanalysis,theminimumwaterlevelshouldbeassumedinthesuppressionpool.10.Thetemperatureinstrumentationthatwillbeinstalledinthepoolandthesamplingoraveragingtechniquethatwillbeappliedtoarriveatadefinitivepooltemperature.

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