核电厂系统及其设备复习题Word文档格式.doc

核电厂系统及其设备复习题Word文档格式.doc

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3.Whenlargedecreaseinturbineloadthesteamfromthesteamgeneratorsissenttothe__.

steamcondenser

atmosphere

steamdumpsystem

heatexchanger

4.Anexcessofcoolantinventorycanresultina___.

powerincrease

temperatureincrease

reactortrip

turbinetrip

5.Followingthecoastdownofthecoolantpumps,thecoreresidualheatwillberemovedby___.

condensers

naturalcirculation

boilingheattransfer

emergencypower

6.Theoperationofanuclearplantis___thanoperatingamodernfossilfuelpowerstation.

easier

moredifficult

rather

morecomplex

7.Theheatistransferredbythereactorcoolantfromthecoretothe___.

cecondaryloop

outletnozzles

steamgenerators

pressurizer

8.Thefuelrodprovides___totheescapeoffissionproducts.

twobarriers

threebarriers

seals

abarrier

9.TheCEAguidetubesaremadeof__.

stainlesssteel

ceramic

zircaloy

B4C

10.Theheliuminsidethefuelcladdingimprovesthe____.

characteristic

gapheatconductivity

gapheatconvection

cladstrain

11.TheCEAguidetubesarearranged___.

inthefuelassembly

aroundthefuelassembly

inthecenteroffuelassembly

outsidethefuelassembly

12.Thecoolantcan___throughtheguidetubes.

notflow

be

flow

pass

13.There___steamgenerator（s）ineachprimaryloop.

isone

aretwo

arethere

isno

14.Atthetopofthetubebundleshroud,___aremounted.

eggcrates

steam-waterseparators

plates

baffles

15.There___inthesystem80+steamgenerator.

isonefeedwaterinlet

aretwofeedwaterinlets

arethreefeedwaterinlets

aremanyfeedwaterinlets

16.Theflywheelonthemotoristoprovide___.

energy

water

coastdownflow

torque

17.Thetemperatureofthewaterinthesealassemblyismaintainedwithinacceptablelimitsby___.

oil

steam

waterandoil

18.Inaccordancewiththecoolanttemperatureprogram,theaveragereactorcoolanttemperatureis____whensteamdemandisincreased.

constant

fall

raised

high

19.Inpressurizedwaterreactorswaterisusedas___.

moderator

coolant

bothaandb

neitheranorb

20.ThethermalefficiencyofPWRsis___.

morethan40%

about30%

lessthan10%

about70%

21.Thespacebetweenthereactorvesselandthecorebarrelisthe___.

fuelrods

controlrods

downcomer

plenum

22.TheECCSisprovidedto___.

coolthecore

controlreactivity

controlvolume

drivepump

23.Thereare___successivebarriersinPWRtopreventradioactivityescape.

two

three

four

five

24.Thecontainmentenclosethe_____.

reactor

reactorandpressurizer

primarysystemandsecondarysystem

entireprimarysystem

25.Fromthetextthesafestnuclearpowerplantmaybea__.

expensiveone

cheapone

bigone

smallone

26.Followingadecreaseinturbineload,thewaterpressureandtemperatureinthereactor__.

willincrease

increase

decrease

willbeunchanged

27.Atemperaturedecreaseofreactorvesselwaterresultsinan___.

insertionofcontrolrods

powerdecease

increaseofreactivity

28.Lossofpowerisa___.

upsetcondition

abnormalincrease

reactorshutdownaccident

29.Inadvertentauxiliaryspraywillresultin____.

temperaturedecrease

powerdecrease

pressuredecrease

abnormalcondition

30.Thelong-termcontrolofcorereactivitymeansadjustmentof____.

boricacid

poweroutput

coolant

31.Theburnableabsorberrodassemblyprovidesthecapabilityofhighabsorberstrength__.

inallitslife

atthebeginningofrefueling

attheendofrefuelingcycle

duringoperation

32.Thefuelassembliesusedinareactorare__.

similar

different

threetypes

same

33.Inthefuelrodthespringissetonthe___.

pelletcolumn

spacerdisc

endcap

top

34.TheCEAguidetubesareweldedtothe___.

spacergrids

lowerendfittings

35.Thefuelspacergridsaremadeof__.

stiffarches

springs

zircaloystrips

36.Afterlongtimeradiationtheboroncarbidewill___.

decreaseinmass

beswelling

increaseinmass

bedissipated

37.Theeconomizerincreasesthecoldlegside___beforecoolantleavingthesteamgenerator.

flowrate

temperature

temperaturedifference

relativeflow

38.Thewaterfromthesteamseparatorsflowsdownintothe___.

economizer

shroud

bundle

evaporatorsection

39.Inthedowncomerthewateris___.

saturated

boiling

verycold

subcooled

40.Thepumpisconnectedwiththemotorbya___.

diaphragm

tube

coupling

casing

41.___pressurizerheatersareconnectedtoproportionalcontrollers.

Afew

Theremaining

Mostofthe

Many

42.Thefluidfromeconomizersectionis___.

two-phaseflow

boilingwater

subcooledwater

saturatedwater

43.Theamountofheatthathasbeenconvertedinsteamturbineis___thatremovedincondenser.

morethan

lessthan

sameas

similarto

44.Thehotprimaryfluidexchangesitsheatwiththesecondaryfluidinthe__.

condenser

header

45.Residualheat-removalsystemremovethedecayheatfromthecore___.

duringplantoperation

afterplantshutdown

duringstart-up

duringtransientcondition

46.The___isconnectedtothespentfuelpondbytransfercanal.

containment

pressurevessel

pipe

reactorcavity

47.Oneoftheimportantfactorsinfluencingcontainmentdesignis__.

thesize

thepressureinside

LOCA

economic

48.Asodiumhydroxideadditiveisprovidedtoreduce__.

theiodineconcentration

thepressure

theradioactivity

vapor

四、解释如下蒸发流程图，阐述作用和工作原理。

五、解释如下除气装置流程图，阐述作用和工作原理。

六、客观的描述你所知道的日本福岛核电站核泄漏事故的过程，结合课本知识，分析其原因，并且指明有哪些人为的失误，并设想更好的控制策略。