正ISRADIOACTSVRVEY●lnRadioactivitySurveyDatainJapan

Number56
March1981

CONTEhlTS
ENV[RONMENTAL

DATA

TritiumSurveil[ancearoundNucIearFaciIitiesinJapan‥.‥....‥‥‥‥...
仰加血朋//〃㍍/r〟feof斤∂膚0/og正∂/ぶc/e〃CeざノTritiumSurveiIlancearoundNuclearFaciJitiesinJapanThe

ln ordertomeasurethetritiumlevels.andcon･
toassessthe pub[ic heaJthslgnificance ofs

results of eachtritiumin the environmentalwateraroundthenucJear
facilities.the tritium survei"ance program
beganin

POintsshowninFigure2to9
respectiveJy.Certain trendso
from thelasfolfows.Tritium

1967local[y8tTsuruga

in a[lthe暮andSequentlv

daysitdistricts.Nowa･and Mihama
has been expanded to thetwelve commercial

nuclearpower

statjons(Tab[el)andfaciJities.Theirlocations

fivearepresentedin
Thedatafrom1967to1976werereportedin''Radio･

nuclear

FiguTel.

tIandwater

nuclearpowerstationsandth
Tritium concentratiorl..

G帥ir如00lsIde｡.醐de40すp抑in甘‖toabou川

activitvSurveyDatainJapan.NJRS･RSD二型』里虻'･ h州feo†abouし担eYea誓旦
fn this pubJication

thedatafrom1977to1980arePreSented.
ThoughthefrequencyofsamplingwereIimited
OnCe

OrtWiceayearinmostcases,thetimesandthe

in northeasternJapan.ln
Shimane.Saga.itdecreasedc‑‑‑】‑‑叫‑‑〜̲

‑一■■‑牡嬰旦̲PCi/lin19丁トto‑･1･‑･･‑‑■‑" ‑

19丁9.

theannualvariationof tritiumJeveJ.taking

accountofitsseasonablevariation.SampIingobjectsof
Water

Were

Selected

basically

according

foJlow[ngtoCategOries.

WeJIs aroundthe nuclearstationwhichareutilized

sourseoftheprlmaryCOOIingwaterorthe

drinkingwaterinthestation.
Seawaterat
theinJet orthearY川Oli叩Water.

‑亡→一叫一‑■‑一叫欄山一岬†一【‑′一Loronth占盲百折brefarfromth
tobeinfluenced
orreactors

by the elfacilities.Tritiun

COaStalwatersdecreaseda)則SuChasrivers.reservoirsorpondsand
asthe‑〜‑

deawat帥SamPledat

POintsweremanagedtofixateachstationinordertofo"owsoI

狸坦inl里む叫th｢上甲r亭!
Tritium

concentration

nuclearpowerstationswasl8out]et ofthesecond･

frorT‑'■̀≡1犀ヽFigurelLocationofNuclearPowerStationsandNuclearFacilities

NuclearPowerStation
l.TEPCOFuku暮him■

2.JAPCOTok■i
3.JAERITok●iヰ.PhlCTok●i
5.JAER10h■r■i
H●m轟Ok■8.C8EP亡O
丁.JAPCOT暮uru騨

NII

8.KEPCOMih■m轟
9.KEPCOOhi
lO.KEPCOT轟k●h8m811.C(;EPCO

K"him■

12.SEPCOlk轟t●
13.KYEPCO

G●nkdi14.KYEPCOS●n血=und●r亡On暮tru￠tionI

1う50

TablelNuclearPowerFacilitiesinJapan(asofOct.1979)

NameofOrgani2=ation

TokyoElectricPowerCo.

Abbre̲とOCationミ Name｡fN｡Clea,

Type｡fP｡

viationPowerPlmt

Reactor(MTEPCO

p芸芸誌EOhkuma,FukushimaDai‑Ichi

FUKUSHIMA

Unit‑1B W R

Unit‑2B W R

Unit‑3

B W R

Unit‑4

B W R

Unit‑5B W R

Unit一るB W R

Tomioka,
FUKUSHIMAJAPCO

Tokai.

Dai‑NilJnit‑1

B WRWR

Unit‑2B
Unit･1G

Unit‑2B

TsurugaUnit‑1B

Tokai

JRR‑2

Tokai

IBARAGI
Myo】m,l,l■Tl

CRWRWR

TheJapanAtomicPowerCo.

Fuku血ima

13

FロKtJ【JAERI

Institute

Tokai.

RR e SeaaCt‥
血Or

JapanAtomicEnergyResearcheJRR‑3lBARAGI

Oharai

JPDR

BWR

JMTR

Research
Reactor

IBARAGIPowerReactDrandNuclear

PNC

FuelC0.

Tokai,

FuelReprocesslng

IBARAGI
Oharal,OharaiEnglneering

IBARAGI

Center

Myo】1n,FBR

Tsum9aFUKUI
ChubuElectricPowerCo.

CBEPCO

Hamaoka,

Hamaoka

SHIZUOKA
KEPCO

M払ama,

MihamaFUKUI

Unit‑1
Unit‑2
Unit‑3

Ohi,FUKUIBWRBWR

Unit‑20hi

Unit‑1
Unit‑2PWRPWRPWRPWRPWR

KansaiElectricPowerCo.

Unit‑1★ 一J★ ヰ

JRR‑4Obarai★ 【一★ヰFigure2

Nunbers#1〜#6in

SamplingPointsaroundTEPCO

Figureindicatethe

nurTlberofreactors.respective[y.

FUKUSHIMANuclearPowerStation･Table2

PREFECTURE

FUKUSHIMA

TritiumCon

S慧e

WaterSource

samplingPointsaroundtheNuclearPowerStationTEPCO

FUKUSHIMADAI‑ICHIPOWERSTATION
11±5

Inletofsecondarycoolingwater

20utletofsecondarycoolingwater3

TapwaterofTEPCO

St

4

TapwateratOhokuma

St

110±25

5

Sakashita

S t ream

76±21

TEPCOdam

FUKUSHIMADAI‑NIPOWER′0

Inletofsecondarycoolingwater

7

Outletofsecondarycoolingwater

8

WellNo.1

凸7

TapwaterofTEPCO

Sea脱reamreaml

10±559±32

STATION29±316±3groundwater

9±5groundwater+stream

O±2
76±32

10

TapwateratTomioka

stream

1 1

Kidogawariver

stream86±6

Figure3SamplingPointsaroundJAPCO,JAERIandPNCatTOKAIandOHARA[･Nucloar

FacilitiesatTOKAlin

A.JAPCO

NuclearPowerB.

Figure3.
Reactors

JAERINSRR

C.

JPDR

D.

WasteDisposalPJant

E.

JRR‑1

F.

JRR‑2G.

JRR‑3H.

JRR･4l.

PNCNuclear

FuelReprocesslngPlantNumbers#1.#2and#3inFigureindicatethe

numberofdrainsofJAERl.respectiveJy.

KUJIGAWA
ll

RIVER

TOKAt

●SHINKAWA
RIVE●KATSUTA

NAKAGAレノA

NAKAMTNATO
HINUMAGA囚A
RlVER
HINUMA
LAKE▲

Table31BARAKIPREFECTURE

TritiumConcentration,pSampleSamplingPointsaroundthe

Water

No.

NuclearPowerStation

SourceJAPCO

TOKAIPOWER

Jul.

Dec.

Jul.

19

1218

Dec.
11

1977

1977

1978

1978

STATION
24±

Outletofsecondarycoolingwater

7

31±6

35±5

17±

3

50±

4

18±4

No.1
0utletofsecondarycoolingwater
No.2

JAERIatTOKAI
30utletofDrainNo.1

405±1440utletofDrainNop2

1350±50108±2956251±0utletofDrainNo.320±3

SeashoreneartheoutletofDrain

44±75166±22145±28209±25344±2743±360±449±315±312±283±721±432±321±3No.1
7

SeashoreneartheoutletofDrain
No.2

PNC
89lO

atTOKAI
1stwastechanne1202±8105±4114±28105±25

EstuaryofShinkawariver

162±5219±7115±495±25Sea

38±726±332±423±Stream

134±4159±686±5148±256136±5109±76

Seashore

atPNC

stream/sea

4TOKAIvillagellSakakibashiBridge:Kujigawariver

12Kikanba:AbranchofShinkawa

Stream1る6±13

MiyamaebashiBridge:Shinkawa

Stream247±14

AkogluraPOnd

reSerVOlr

202±6

119±44143±4151±25

224±33113±29

81±4140±25

MITOcityandNAKAMINATOcity
1516

Nakagouchi:Nakagawariver
SeashoreatNakaminato

Stream137±

Sea

21±6198±6164±32132±257634±32±326±3

Figure4

HAMAOKANuc[earPowerStation･

SamplingPointsaroundCBEPCO

N‡♂
NllNO‑GA吊A

SAKURAGAIKERIVER01

L‑‑･l2

POND

KM

̲̲̲｢!

●●●̀ノ①SEA

OFENS

T'∪■l′一‑■L‑､t̲′■‑■′ヽ′′ヽlぐ､ノ7∴一1 し･､一一■■l■′ヽ一一ヽ

一■一tl･{㌧ヽ′･一‑､しJ

MOUNTAiN｢11◇

Table4Sample

SHIZUOKA

PREFECTURE

WaterSource

SamplingPointsaroundtheNuclearPowerStationNo.

CBEPCOHAMAOKAPOWER

STATIONlIntaketowerofsecondarycoolingwater600meterfromsandhil1

Sea

2

Intakereservoirofsecondaryc001ingwaterofReactorNo.1

Sea

3

0utletofsecondarycoolingwater4

Ni‑inogawariver5

Tankforprlmary〇OOlingwaterofReaEコtOrNo･1

6

TapofCBEPC0

7

SakuragaikePond8

WellofPumplnghc･uSe

Sea

Streamgroundwater
StreamreSerVOlr

StreamTable5

FUKUIPREFECTURE

SampleWaterSource

SamplingPointsaroundtheNuclearPowerStation
No.

JAPCOandPNC
I
2TSURUGAPOWER

STATION

Takamakigawariver
InogaikepondStream75+一reSerVOlr

57+一3

InletofJAPCOsecondarycoolingwaterSea

4 〔0 +一40utletofJAPCO

Se;止1

5

InletofPNCsecondarycoolingwater

60utletofPNCsecondarycoolingwatersea

7

ReservoirofdrinkingwaterofPNC

Stream8

TapofJAPCO

sはeam

lO7±

9

TapofPNC

stream75±

secondarycoolingwater

Sea

19±

Figure5‑1SamplingPointsaroundJAPCOandPNCTSURUGANuclearPowerStati
1

Takamakigawariver.

2lnogaikepond.

3

lnletofsecondarycoolingwaterofJAPCO.

A‑5
6OutletofsecondarycoolingwaterofJAPCO･
lnt￠tO†socondaryc001ingwatorofPNC.

Out暮etofsecondarycoolingwaterofPNC.

7

ReservoirofdrinkingwaterofPNC.

8

TapofJAPCO.

9

TapofPNC.

00

デー一′+一Sample

SamplingPointsaroundtheNuclearPowerStation

WaterSource

No.

KEPCO

MIHAMAPOWER

STATION
89±4

MajogawariverSt

llOchiaigawariverSt

12

Inletofsecondary

130utletofsecondarycoolingwaterofReactorIandII

140utletofsecondarycoolingwaterofReactorIII

42±3

15

TapofKEPCO

72±7

Figure5‑2coolingwater

reamr2amSeaSeaSeaream

lO

86±3
124±5
45±3

SamplingPointsaroundKEPCOMIHAMANucIearPowerPJant･

10.Majo‑gaWarivor.
11.Ochiai瑠aWarivor.
12.lnletofsecondaryco01ingwater･

13.OutletofsecondarycooJingwaterof
Roactor#1and#2.
14.OLJtletofsecondarycoolingwaterof
Reactor#3.
15.Tapof

KEPCO.

●NYU

SampleWaterSource

SamplingPointsaroundtheNuclearPowerStation

No.

KEPCO

TAKAHAMAPOWERSTATION00

16

Sekiyagawariver

Stream17

TapwateratOtomi

groundwater18

TapwateratOguroi

groundwater

19

Inletofsecondarycoolingwater

Sea

20

0utletofsecondarycoolingwater

Sea

1 q′

Stream0ノ 00

21

Figure5‑3

TapofKEPCO

SamplingPointsaround

KEPCO

TAKAHAMA

1l 17qJ (02 凸7

NucFearPowerPIant.

16.Sekiya‑gaWariver.
17.Tapo†Otomi.
18.TapofOguroi.
19.lnletofsecondarycoolingwater.

20.Outletofsecondarycoolingwater.
21.Tapof

KEPCO.

N‑‑＼へ､‥･...MOUNTA川一
ヽ‑ヽl＼･1.へノ0TOMI♯2≠垂Tritium
SampleSamplingPointsaroundtheNuclearPowerStation

WaterSource

No.

Oct.
3,4
1977

bEPCO

OHIPOWERSTATION

22

ⅠnletofsecondarycoolingwaterSea

230utletofsecondarycoolingwaterSea

24±324

PoolofdrinkingwaterofKEPCO

Stream

174±825TapofKEPCO

Stream49±5Figure5‑4

SamplingPointsintheSiteofKEPCO

OHINuclearPowerPlant.

22.lnletofsecondarycoolingwater.
23.Outletofsecondaryc001ingwater.
24.Poolofdrinkingwater.
25.Tapof

KEPCO.

勺24±3C

Figure6‑1SamplingPointsinSiteofCGEPCO

Figure6‑2

KASHIMAPowerStation.

Samp=ngPointsaroundCGEPCOinShimanePrefecture.

TabIe6

SMMANEPFIEFECTURE

TritiumConcentrati

Dec.
SampleSamplingPointsaroundthe

No.

NuclearPowerStation

Jan.
WaterSource

14,15
Jul.
1〜28
1977

CGEPCOKASHIMA

POWER

1〜22Jun1977
OrJan.
20
1978

STATIONl

OffshorewateratCGEPCO

18±619±352Inletofsecondarycoolingwater

34±423±316±30utletofsecondarycoolingwater

27±319±312±4

ReservOirfordrinkingandprlmaryCOOling

stream

114±6121±5′b8±

stream

93±674±3nO

7+一Stream/sea

46±467±639+一Stream/sea

93±686±557+一′一Stream

112±5109±4(0+一′一2.6

3 2 +一 3±SoutherndistrictofCGEPCO
PublicwatersupplyofKashimatown

6

NakaumilakeatHonJyOtOWn

7

ShinjikolakeatTamayutown

8

Hi‑igawariver

9

Matsuespa

hotsprmg±2.42.､

5Tabfe7

EHJME

PREFECTURE

SampleNo.

SamplingPointsaroundtheNuclearPowerStation

SEPCOIKATA

Inletofsecondarycoolingwater

20utletofsecondarycoolingwater

3Desaltedseawater

4

TapofSEPCO

5

TapwateratIkatatown

STATIONSt
St

SampIingPointsaroundSEPCOIKATANuc]earPowerStation.

SEPCO
IKATA
POWER

STATIONS2aS2aSeareamream

Figure7POWER

lWaterSource

TabJe8

SAGA

PREFECTURE

TritiumConcent
SamPleSamplingPointsaroundtheNuclear

No.

Mar.

PowerStation

KYEPCOGENKAIPOWER

Mar.

929

1978

1979

STATIONl

InletofsecondarycoolingwaterSea

60±516±3

20utletofsecondarycoolingwaterSea

20±422±33ReservoirofdrinkingandprlmaryCOOling

Stream98±7

reServ01r

96±4Stream

83±4Stream97±4

Water(DamofHatsutariver)4

ShimobatameikePond

5

TapofKYEPCO

6

AbranchofShiregawariver

Figure8

SampFingPointsaroundKYEPCOGENKAINuclearPowerStation.

104±7Tab[e9

KAGOSHJMAPREFECTURE

SampleNo.

SamplingPointsaroundtheNuclearPowerStation

WaterSouKYEPCOSENDAIPOWERSTATION(underconstruction)
1

SeashoreatSendai

2

TenjinbashiBridge=TodorokigawariverSea

3

MiyayamaikePond

4

Kuranoura:Sendaigawariver5

PublicwatersupplyatNakago:Sendairiver

6

TapwateratYoritaelementaryschoo1

StreamreSerVOl:Stream
Streamgroundwat

7

TapwateratGumizakibranChofcityoffice

8

TapwateratTakaebranchofcityofficegroundwat

Figure9

SampJingPointsaroundKYEPCOSENDA.Nuc.earPowerStation(undercon

N阜‑KOSHIKISTRAITSlgroundwat