ML17037C779

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Nine Mile Point, Unit 2 - Table 7.2-1 Isolation Signal Codes(Cont'D) 6 of 6
ML17037C779
Person / Time
Site: Nine Mile Point Constellation icon.png
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$.Abbreviations usedintable;AO-AiroperatedMO-MotoroperatedSO-Solenoidoperated.

RHR-ResidualHeatRemovalSystemLPCI-LowPressureCoolantInjection SystemRCIC-ReactorCoreIsolation CoolingSystemLPCS-LowPressureCoreSpraySystemHPCS-HighPressureCoreSpraySystem~inalDttD~t'eactor vessellowwaterlevel(AscramwilloccuratthislevelalsoThisi.sthehigherofthetwolowwaterlevelsignal)Reactorvessellowwaterlevel-(Thereactorcoreisolation coolingsystemwillbeinitiated atthislevelalso.Thisisthelowerofthetwolowwaterlevelsignals.)

Highradiation

-mainsteamlineLinebreak-mainsteamline(highsteamflow)Linebreak-mainsteamline(steamlinehighspacetemperature)

HighdrywellpressureReactorvessellowwaterlevelorhighdrywellpressure(corestandbycoolingsystemswillbestarted.)

HighreactorwaterlevelinstartupmodeLinebreakincleanupsystem-highspacetemperature; highdifferential flowLinebreakinreactorcoreisolation coolinzsystemsteamlinetoturbine(highsteamlinespacetemperature, highsteamflow,orlowsteamlinepressure)

NLinebreakinresidualheatremovalsystemshutdownandheadcooling(highspacetemperature)

Reactorhighwaterlevelp+RSLowmainsteamlinepressureatinlettoturbine(RUNmodeonly)Lowcondenser vacuumLowdrywellpressureUHighreactorvesselpressure-closeresidualheatremoval-shutdowncoolingvalvesandheadcoolingvalvesHightemperature atoutletof'leanup systemnonregenerative heatexchanger, highdifferential flow,highareatemperatureS StandbyliquidcontrolsystemactuatedHighradiation, reactorbuildingventilation exhaustRemotemanualswitchfromcontrolroom.(AllregularGroupAandGroupBisolation valveswillbecapableofremotemanualoperation fromthecontxolroom.)Thesearetheisolation functions oftheprimarycontainment andreactorvesselisolation controlsystem;otherfunctions aregivenforinforms,tion only.6of6