核电厂系统及其设备复习题Word文档格式.doc
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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。
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