ML17037C779

Nine Mile Point, Unit 2 - Table 7.2-1 Isolation Signal Codes(Cont'D) 6 of 6

ML17037C779
Person / Time
Site:	Nine Mile Point
Issue date:	02/06/2017
From:	Niagara Mohawk Power Corp
To:	Office of Nuclear Reactor Regulation
References
Download: ML17037C779 (1)

Text

NMPNS-2TABLE7.2-1(CONT'D)LATISDES1$.Abbreviationsusedintable;AO-AiroperatedMO-MotoroperatedSO-Solenoidoperated.RHR-ResidualHeatRemovalSystemLPCI-LowPressureCoolantInjectionSystemRCIC-ReactorCoreIsolationCoolingSystemLPCS-LowPressureCoreSpraySystemHPCS-HighPressureCoreSpraySystem~inalDttD~t'eactorvessellowwaterlevel(AscramwilloccuratthislevelalsoThisi.sthehigherofthetwolowwaterlevelsignal)Reactorvessellowwaterlevel-(Thereactorcoreisolationcoolingsystemwillbeinitiatedatthislevelalso.Thisisthelowerofthetwolowwaterlevelsignals.)Highradiation-mainsteamlineLinebreak-mainsteamline(highsteamflow)Linebreak-mainsteamline(steamlinehighspacetemperature)HighdrywellpressureReactorvessellowwaterlevelorhighdrywellpressure(corestandbycoolingsystemswillbestarted.)HighreactorwaterlevelinstartupmodeLinebreakincleanupsystem-highspacetemperature;highdifferentialflowLinebreakinreactorcoreisolationcoolinzsystemsteamlinetoturbine(highsteamlinespacetemperature,highsteamflow,orlowsteamlinepressure)NLinebreakinresidualheatremovalsystemshutdownandheadcooling(highspacetemperature)Reactorhighwaterlevelp+RSLowmainsteamlinepressureatinlettoturbine(RUNmodeonly)LowcondenservacuumLowdrywellpressureUHighreactorvesselpressure-closeresidualheatremoval-shutdowncoolingvalvesandheadcoolingvalvesHightemperatureatoutletof'leanupsystemnonregenerativeheatexchanger,highdifferentialflow,highareatemperatureSStandbyliquidcontrolsystemactuatedHighradiation,reactorbuildingventilationexhaustRemotemanualswitchfromcontrolroom.(AllregularGroupAandGroupBisolationvalveswillbecapableofremotemanualoperationfromthecontxolroom.)Thesearetheisolationfunctionsoftheprimarycontainmentandreactorvesselisolationcontrolsystem;otherfunctionsaregivenforinforms,tiononly.6of6