盛国豊艶S‑RNUMB
Sept.

ERRATA

NationalInstitut
Sciences

Gamma
Dust

raySpecI
SampleTeble9.The
DisturbancesMiSurvey

Radioactivity

Dat

inJapanNumber39
Sept.】974
ContentsTHE

SURVEYCARRIEDRESULTS
OUT

BY

OF

NUCLEAR

THE16THTHE

PEOPLE'S

Nuclear

Test

RE?UBLICEXPLOS10N
OF

CH川A

Preface

Chines1.The16th

2.DailyRecordofActiontakenagainstRadioactivityfromthe16thChineseNucI
3.PointsofUnderstandingreachedattheExecutiveLeve]MeetingoftheHeadqua
forCountermeasuresagalnStRadioactivity
4.TheResultsoflnvestigationsinconnectionwiththe16thChineseNuclearTest
5.TheMicrobarographicDisturbancesandUpperAtmosphericWeatherChart
6.ChineseNucIearTestsandTheirEffectsuponJapan●7.ConcernlngProvisionalJndexforCountermeasuresagainstRadioactivity

ScienceandTechnologyAgency
NationallnstituteofRadiologICalScience

TEST

THE

EXPLOSION

NUCLEARBYTHE]TESTCAR

REPUBLICPEOPLE,STHE

OF

RESULTSSURVEY

OF

Preface

Thiseditionisprovided

fortheradioactivitysurveyreSultsoffall

Chinesenuclearexplosiontest.
The17thofJunein1974,Thepeople'sRepublicofChinacarri<thisnuclearexplosion

test.Concernlng

themeteorologlCalobservatories.The

nation‑Wide

test,atmOSPhericdisturbancescalethisofequlValenttoTNTlmegatone.
Falloutradioactivity

measurementofthistestswascarriedoutat

radioactivitysurveystationsfromthe18thtothe25thofJune.
Meantime,COmParatively
beta

radioactivityln

uPPer

highairatradioactivity
WesternArea

wasmeasured,i.e.,

and

no

WerereCOrdedofradioactivityiodineinmilk.
TheradioacivitysurveyreSultsofthistestwereconsiderablyloweI
iLl;heprovisionalguideofradioacitivtycountermeasuresestablishedt

CountermeasuresHeadquarters.

especiallysChineseNuclearTest

1.The16th

normalfi【tlie nuCle;

Atomic(1)Thelndian

EnergyCommission

Chinesenuclearteston17June1974nouncedthe
foIIows:'LAt
Meanas
6a.m.Greenwich

an･especiallyTime.

ChinaconductedanucleartestintheatmosphereOf theoneoforder

Lop

at

megatondust.

21June:Radioacit
paniclesday.lnlbecameat

weaponstestintheatmosphere.1ts

22June:Radioacti

scalewasbetween200kiIotonsandlmegaton:'(3)TheWere

MeteoroIogicaIAgency,aCting

ontheseabnormaIitiesin

Observation

atmosphericpressureraioacitivi

ataII

postsbutwasunabletoverifyabnor･

maIvariations

ortheosciIlationin

retl

SuSPenSio

reports,Carriedoutinvestigationstoassembledata
OfV

reg10nS

Commission(AEC)announced:''Atabout2a.m.
NortestsiteChina(EDA)on17JuneattheLop
outa

noticedir
acitivity

NorintheSinkiang･Wiegel(phonetic)autonomousregion:(6a.m.GMTis3p.m.Japanesetime.)(2)On17Junethe
UnitedStatesAtomicEnergy

Carriedtoringpo5

23June:Upperatltheatmosphericwestl

Subjected

PreSSure･

analysIS
testingil

2.DailyRecordofActiontakenagainstRadioactivi･

Researchtyfromthe16thChineseNuclearTest
17June:ThelndianAtomic

thethat

on17Juneincludedoutalmegatonnucleartestin
Lopat

atmosphere

Norat3p.m.

againstRadioactivity

executive

meeting

ferenceroominAgencyChnology
decided

toSurVei"ance24June:Tests

at

tion

Headquartersfor

theCountermeasuresthe90thnormalIt

thespecialcon‑
Science and Te

fromlO.30a.m.1t

establish

andry showeca"edat■nuclearChina had(Japantime).
18June:The

revealed

Commission

energyannounced
CarriedDefencetheradioactbity

systemfortheperiodfrom

thetimethetestwasconducted.

after thetothe2｣raYSPeCt
SCintillati
thatpart
SIOn.1nC

(d)Checkingo†ra

WaSdecidedthatthesurveillancesystem
towouLdrevertbacktonormaIoperations
beconcernedwould

and a"authorities

SOinformed.un[esssomeunusuaJleveIs

bedaiJy

conducted

statioI
Prefectures.13
Agency.asatwellasfronMedicaJRadiation

Ofradioactivityweredetectedthatday.

longaperiodaswascon

LevelMeeingof

theHeadquarters

forCounter･

Executive

PurSuedbynuof

chemicalar

theMeteoroJoglCaJAgenmeasuresagainstRadioacitivity(1)The90th(e)Analysis

Executive

3.PointsofUnderstandingreachedatthe

Cy.theMinistryof Agr
GeneraJInstituteofMed

LevelMeeting:18June

19丁4
TheHeadquartersforcountermeasuresagainst

RadioactivityheIdthe90thExecutiveLevelMeet･room
ing at the conferenceof the Scienceand

1974

TechnoIogyAgencyatlO:30a.m.on18June,andcountermeasures

tionwiththeagainst

radioactivity

chinesenuclearExecutiv(2)The91stm

connec･testexplosion

The

HeadquarteT

againstRadioactivity.

conductedon17Junewerediscussed.
1twaspredictedthattheeffectsofthenucIear

about

testwouldappearfrom19thataninvestigationto

COnCernIngtheChinesebeCheckradioactivityshould

outbelowandthataclosewatchon
nts of the resuItsoftheinvestigationshouldbe

set

as

conducted
theLevelMeetingat2p.mmoveme･further
bedecided

that

Executive

Level

heIdasoftenasrequired,and

thatthenextmeetingwouldbeheIdat2p.m.on
25June.

effects ol
starteuponJapan(a)Fortheinvestigation

countdecreased

toAsfarasthecthenucIeartestonhurTI

offIoatingdustat

thehighaItitudesof6.000to12,000metres.thewas
SeIf Defence Agency
to carry out checks
SeVeraItimesperdayfromthatdayforaslonga
seemedandinrainout.howeveltyShownbythetestscoM

lnve或igationProcedures

as(a)Thetest

thehighaltitudeandgl

MeetingswouId

Periodcountermea

CauSlnganincreasein‑mainteined.
1t wasthenecessary.overthe

northern,

WaS

COnSidered thatthreadings

taken

wereParisionwiththeproviscResults

4.The

oflnvestigationin
the16thChineseNuclearTest(1)Gross

Beta‑Radioactivityinconnectionwith

Rain

DryandPlacesinvariouspref‑

Fallout

CalAgency.as

CheckingofGrossBeta･RadioactivityinRain

RadioligicalSciences･Dry

andwell

Falloutwastobeconducteddai[yat30

Tablel.GrossBeta･RadioactivityinRainandDryFaJloL

侮∂〃肋加仰/卸由川卵〃C〃
Uppe:
Lowe

June1974
17〜18

18〜1900

00
00
■

●

●00

00

一

■

一03.〇.〇.〇.〇

00〇4.1.〇

00

一〇〇00
00

一

●

.〇.〇

〇〇.〇.〇

■.〇.〇

一00

■

■

一00

■
0■44･0一.1.〇〇51005

■

00
.〇.〇

00

一〇〇.〇.〇

〇〇00

00

■.〇.〇

〇〇

一〇〇.〇.〇

̲Yonago■22■●Osab22〜コ〇〇0000.〇.〇̲HachijoJlma
Wajima00.〇〇〇〇Tokyo●〇〇Akita.〇.〇21●●〇〇Sendai

●

O2001

■

〓コ

一00
00

00

一21〜00̲Kushiro

20ニー■

1400.〇.〇〇〇0000■

Sapporo20〜nV■

Wakkanai

19

●

1400

Figurel･GrossBeta･RadioactivityinRainand
DryFalIout(JapanMeteoro‑ogicatAgency)
1.Wakkanai
2.S8ppOr0
3.Kushir0

11.Murotomisaki
12.Fukuoka
13.KさgOShima

4.Sondai
5.Akita
6.TokYO

T.Hachiioiim8
8.W坤冊
9.Os8b
l0.Yon叩○S【AOFJAPANTable2.GrossBeta･ActivityinRainandDryFallout

仰嘲勧血帽//〃∫〟山招ざ∂〃〟上∂如招わ/鹿ノUpp･Low

June1974
18〜19

19〜20

20〜21

21〜220.58
2.88

HokkaidoAbta
7■0303

Yamagata

●

●

1●

5202

TokyoKanagawa

●

2802

Niigata●●

Isbibwa

1104

5

●

OsabFukuob

Saga
Kagoshimi●●‑3588‑

Yam叩uChi

一00

‑0667

Okayama

一=.〇9.〇2.〇.14.〇99085513掴
O120

Shimane

〓

‑6808

ll

Tottori〇.4.

04

一01

一03

一■00 1107
∴〓

1400

Figure2
GrossBeta‑Radioactivityin
Dry FatIout

Rainand(Prefectura]lnstitutesandLaboratories)

1.S叩POrO
2.Akita
3.Yamagぬ4.TokY0
5.K糾さgaWa
6.Niig血丁.lshikawa
8.Osaka
9.Tott01i
lO.Shimano

11.Okayama
ほYam叩uChi
13.Fukuoka
14.蝕ga
15.K叩OShima
16.Okinawa

S【A OFJAPAll

Table3.GrossBeta･RadioactivitYinRainandDryFallout

仰加ゎ∂〃//仰〟山抒β//ね血/印加/虎加c即ノGrossβ‑aCtivity
DateofSampling〃

2 2 nd2 3 rd血2419

〃

20′′〜

〃22′ ′〜〃23′一■〜

〃′′〜

〃

●

00

2425rd止血〃

21un

〜

●

̲●

〃19〜′ ′n7

止血nd

〃

1 00

止血Slun〃J(mG/Km2)
0.025′′0.029′′

0.017′′

2.68′′

0.57′′

0.241

9 00

(2)GrossBeta･RadioactivitYinAirboneDustRadioIogicalScience

CheckingofGrossBeta･RadioactivitYinAir･
dailY atJapanbe conductedbone Dustwasto
MeteorologicaIAgencYand

Thetollowlnga

Nationallnsituteof

tion.

Table4.GrossBeta･RadioactivityinAirboneDust

伽∂〃〟細β仰姉川卵即〃

June1974
19202122

1400

Figure33rossBeta‑RadioactivityinAirboneDust(JapanMeteorologicalAgency)

S【A13000OFJAPANTable5.GrossBeta･RadioactivityinAirboneDust

伽血〃∂//〃∫血相β/舶d血廟匝∂/立由〃Cがノ

Estimated

DateofSamplingTリun〃〃〃20●June〜●11 4 0〜′′

10 00〜′′●
一

2 1 S‑nd

1 0 002210 0 0〜

2 3 rd10 00〜

2 4 th10 00〜

●〜′′■

●′′′′

●′′

1 1■

101010101010●
一●
̲■
一00

〇022 3

〇0

24〇0

24

〇0

24〇024

〇 1

24〇0

4

̲

20∞∞∞∞∞∞

〃

19

1O 30

止血S‑ndrd止血
19202122232425

〃

17

止血血

〃

72hr(p●
●

一■

00

●

●

̲■

■

■

一

★Everyestimatedvaluesarecorrespondingtothenaturalradioactivity(3)GrossBeta･RadioactivityinUpperAir
H.n..JapanDe‑(Researchand DeveIopment
fenceAgency)
Since1960,ResearchandDeveJopmentH.n..
Japan

DefenseAgency

hasAn
beta･

them郎ured

Selected altitude.TI

activity of dustinthe]ower)ayerofthestratos･

WaS

PhereandtropopauseusIngaircraftsascoIIectors.
wereareas
The sampIes
taken overthree
Japan

dust

uslng

samplers

attached

undermaircraftOPenedjustaflClosedatsamplingざofaLtitude.Samplingti
wasDust諭mPIing

theaircraftwings.

attachedsampler.
Table6.GrossBeta･RadioactivityinUpperAir

仰β館∂化カ∂〃dββ作/叩爪印r几βリJ如∂〃加ゎ〃αTake‑Off
Methoddatetime

Jun.18th

22:00〜

Underthe

M㌶霊Of
F‑86F

Tsuiki‑Kumamoto‑NyutabaruTsuiki

mainplane
19th

3:01〜

3:36

‥

=‥

‥

9:01〜9:33

=

=‥

･･

12:03〜12:39

‥

=‥

‥

17:00〜19:33

′′

=

=

Western
Area

FlightCourse

Tsuiki‑KumamOtO‑Nobeoka‑
Nakatsu‑Tsuiki
Tsuiki‑Kumamoto‑Nyutabarul′㈹MonitoringPost
仰如即仰/og血∂//〃∫〟山部∂〃d⊥∂ム0伺わ〟由ノ
仰ねおOrO/0如由/4卵mγノ
MostofthemonitoringpostsinMeteorologi･Ca=lgency(A諭hikawa.Wajima)andin18prefec･tures

showedthesameasfour sites(Yamaguchi.
Whichdidal血Iehighas

normalvalue,eXCePt
TabIe7.Countingrateobtainedwiththemonitoringpo‑June20thto23th1973仰如β〝吻鹿川卵〃C〃伽伽r〟招//〃∫〟餌如∂〃dl∂血相わ/砲〟NormalValue

Station14Wajima

14Yimaguchi

21Ishikawa

15Shimane

15Sa9a12FlgUre4
Monitorlng㊥(JapanPost

MeteorologlCalAgencY)●(PrefecturallnstltUteS and Laboratores)

1300

CPCPCPCPαα

Asahikawa

SSSSS
S

(引Nuclid￠SAna吋Sis(c)Measureml
MiIk(a)ParticJesintheUpperAtmosphere
The

Hokkaido

results of tests undertaken at theS腑Defence
Ag帥Cy
Technica】ResearchHeadquarters on19Juneon
upper
atmos･m帥tStation(1PhericparticlescoIIectedat30,000feetinthe㈹細川
reg10nan叫馳d bY a 卵mma

Experim印tSllnstitute ofF

SPeCtrOmeteruSiqa
instrumentareshownin

rayGe(Li)semi･COnductor
Figure(attached asAnnex).
(b)Fa‖outinRainandt)ust
Rainwateranddustco"ected

on19June

WaSSubjectedtoNal(TI)scintiltationgamma
Niigata Pre･

rayspectrometeranaIysisatthe
fecturalPo‖ution
and Sanitation ResearchLaboratory.The
that thisresults dlOWed
nucIear
99TC.

test

had

dispersed239NP,99MO‑

Anima暮Industl

P一曲ctural幻l(叩Ilution resttes也for radi耶
tim0 0f th￠nl
duration otth8

0d.t鵬an叫S叩郎trOm成erhll
but no especi8
COrded.
The†otlot
inve虞igations.

.エU∞寸ON(eヒ遥u∂)∈空S>s男u害O
UUトM(コ)むU

U品00〇.〇L.￠uコ｢吉ONu00寸‥寸○｣S"‑うー‑lこ∈t‑‑う■‑

el伸一べ‑el帥l̀l亡亡t.<.〓.dJO}0むl￠凸lこ∈t‑Z"‑さ哉ot一与‑a〇帥I‑lz∈l

0川占占̀｣Z"‑‑‑‑ナqN"‑一一‑‑む∈Fむ>コむ∈FPu符al帽凸luむ∈巴コS冨≡.寸トのLぎコ｢吉のLuO芯ぜ000､OCleu毘q〓01｣edlS￠宴呈〓聖○ぎニd∈帽S(N･C主dU)空d∈帽S}Sコ凸ぎ月｣壱L傭<｣むd､∈>l‡lUqO

TabIe8.lodine･131inMilk

仰β々舶/血仙ぬ舶用♂血〟他用/如β血抑r∫J
仰∂ぬ〝∂//仰血佃扉ノh血∂/血血∫叫ノ休作頭〟月♂血〟仙招/如β血銅r∫ねr加ノ

DateofSampling

June
18th
O9:00

Determination

19th
09:00

20th
09:00

21st
09:00

17:00

+

+

22n
09:l

HokkaidoNationalAgriculturalExperimentStation(Sapporo)+

NationalInstituteofAnimal/Industry(Chiba)
KyushuAgriculturalExperiment

5･The

Microbarographic/+Station(Kumamoto)Disturbances

and

Upper

Disturbancesand

Up･+

AtmosphericWeatherChart(1)TheMicrobarographic

PerAtmosphericWeatherChart

atseveral或ationsi【Slightabnorma

SIightabnormalmicrobarographicdisturbance

COuld notbeconfir

Whichwascausedbythenuc)eartestwasobserved

tion.

TabJe8.TheMicrobaro9raPhicDisturbances〟叩∂〟肋加〝如月卵〟C〃

Station(諸芸.)A7Egrdeむ∈;u邑月一■(∈00り望q∈00C∈冨Llご馬じ葛五sO∈‑和恵己d⊃

亡雲U｣芸冨きじ葛五の○∈l:邑d⊃(N)＼‑盲8墨q∈8M

ノむ∈;Uede｢(∈0000盟q∈00∽∈冨Llご馬じ葛isO∈l:鼠d⊃q∈○宗(∈00の盟∴

亡eエUJa吉富き0血盲エdsO∈ldこ邑d⊃lrL≡

Nuclear

6.ChineseJapan

Testand

Their

Effects Upon(a)DateTestwasConductc(b)ScaIeofTest:SmaIIsca

TheFirstTest
Chinaannounceditsfirstatomicbombtestinthe
Westernreg10nWaSSuCCeSSful･TheU･S･AtomicEnergy
thattheChinese nucleartest
Commission
announced
useduranium235.

DateObjectsforstudy

Orderofl(c)PlaceTestwasConduct一(d)EffectsonJapan:

HighestFigure

First

Effects
BecameApparent

GrossBeta‑RadioactivityinUpperAir

19伽t.1964

200ct.,64762picocl

GrossBeta‑RadioactivityinRainand

200ct.1964

23

200mi11ic(West0ct.,64

day

DryFallout
GrossBeta‑RadioactivityinAirbone

190ct.1964

220ct.'64

38

picoc'

(Fukt

Dust

TheSecondTest
Chinaannounced''anucIearexpIISionwascarried(a)DateTestwasConduct(b)ScaleofTest:Smallsci
Orde10t

OutOVerthewesterndistrict′'.Thetestwasthoughtto
beanairdroptestuslnguranium235.
●(c)円aceTestwasC…ducl(d)EffectsonJapan:

DateFirst

Objectsforstudy

HighestFigure

Effects
BecameApparent

GrossBeta‑RadioactivityinUpperAir

17May1965

18May'65

941picol(Cen
GrossBeta‑RadioactivityinRainand
DryFallout

20May1965

21May,65

430milli
day

GrossBeta‑RadioactivityinAirbone
Dust

20May1965

21May'65

28pico･HighestFigu

DateFirst
Effects

Objectsforstudy

馳cameApparent

GrossBeta‑RadioactivityinUpperAir

25May1966

240p

11May1966

930IT

(1
GrossBeta‑RadioactivityinRainandllMay1966

dDryFallout

GrossBeta‑RadioactivityinAirbone

15May1966

36p

Dust

The4thTest
Chinatest

announced''theofa9uided
nucIearweaponwassuccessfulandtilenuClearwarhead
hitthetargetaccurately".

missiJe(a)DateTestwasConl㈲Scaleo一丁e虻Smakilo(cIPlaceTe虞㈹SCon
州

EfIectsonJapan:

DateFirst

HighestFigur

Effects

Objectsforstudy

BecameApparent

GrossBeta‑RadioactivityinUpperAir

5Nov.,66

6. 1

pぐ

GrossBeta‑RadioactivityinRainand
DⅣFallout

lNoV.1966

5 Nov.,66

4 2.3 ndGrossBeta‑RadioactivityinAirbone

20Nov.1966

2 Nov.,66

2 〇.0

Dust

The5thTe虞U.S.Atomic

EnergyCommissionannouncedthat

托detecteduranium238fromtheexplosionwhichwas

300

OfseveraIhundredstons.Thetestwasseenasthefirst
蝕叩tO㈹rdsahYdrogenbomb.

Objectsforstudy(a)DateTe或WaSCom(b)Scaleo一丁est:Med

DateFirst
Ef飴cts(c)PlaceTestwasCon㈹E梅山sonJapan:

HighestFigurpぐTle6thTest
China

announced''thetest
districtwas
the westernoverStated thatitwasatest

ofahydrogenbomb(a)DateTestwasConductl(b)Scaleo一丁e虻L訂geSCi

successful".U.S.A.E.C.

ofahydrogen

bombwitha

megaton!

(c)PlaceTestwasConduct(d)EtfectsonJapan:

引治Ieofseveralm喝atOnS.

HighestFigure

DateFirst
Effects

Objectsforstudy

BecameApparent

GrossBeta‑RadioactivityinUpperAir18June1967

18Une1967

580pico(We5GrossBeta‑RadioactivityinRainand"

23June1967

5.5millj

DryFa1lout

GrossBeta‑RadioactivityinAirbone

"

Dust

The7thTest
U.S.A.E.C.announced
ChinesenucIeartestinthatitdetected the7thupper

atmosphericlayerthepartofChina.anddeclaredthatthe

OVerthewestern
explosionwassmall.

芸June1967]1･2簑
(a)DateTestwasConductl(b)Scaleo一丁est:Smallsci
20kilot.

(c)PlaceTestwasConducl(d)EffectsonJapan:

HighestFigure

DateFirst

Objectsforstudy

Effects
BecameApparent

GrossBeta‑RadioactivityinUpperAir

GrossBeta‑RadioactivityinRainand
DryFalloutGrossBeta‑RadioactivityinAirbone
Dust

25Dec.1967

DateF

The9thTest
Radio

Pekingannouncedon40ct.1969:̀̀China
first undergroundCOnductedits
Septemb即′′.

nucleartest on23(a)DateTe虞WaSCondl
仙Scaleo一丁￠虞:Notk(c)円ac￠Te或WaSCondl
州【侮ctsonJapan:

Therewasnoeffectsata"duetothefactthat
thetestwascarriedoutunderground.

ThelOthTest
thatit detected

U.S.A.E.C.announced
nucIear test earIYlnto1969.According

aChinesethemorning of29September
Radio Peking.on40ctober:(a)DateTestwasCondl(b)ScaleofTest:TNT(c)円aceTestⅥ何SCond一一Chinatestedanewlyhydrogenbombsuccessfullyon

仙EffectsonJapan:

29Septemberoverthewesterndistricts..･

DateFirst
Effects
BecameApparent

Objectsforstudy

GrossBeta‑RadioactivityinUpperAirlOct.1969

ThellthTest
U.S.A.E.C.announced
COnducted

anatomospheric

4:30p.m.(Japanthat

HighestFigu

chinaseemedto

have

nucJear explosionaroundthetime)on140ct.1970and(a)DateTe虞WaSCondl
州ScaIeo一丁est:3me!
(c)PlaceTestwasCond
州 EffectsonJapan:

Strengthwasestimatedat3mqatones.

Objectsforstudy

DateFirst
EffectBecameApparent

HighestFigu

HighestFigure

DateFirst
Ef飴ct

Objectsforstudy

BecameApparent
23Nov.1971

GrossBeta‑RadioactivityinRainand
DryFallout

2394′mi11i(Nov.,71

day(

GrossBeta‑RadioactivityinUpperAir

23Nov.1971

12pic∝

27Nov.ワ1(FukThe13thTest
U.S.A.E.C.announced

that

China

carried outa

explosion test of a sma"scaIe
under20
kilotonsintheatmosphereattheexperimentalstation
nuclear(a)DateTestwasConduct(b)ScaleofTest:Sma"(u(c)円aceTestwasConducl
州

atLopNorinthewesterndistrict.

DateFirst

EffectsonJapan:

HighestFiqur

Effects

Objectsforstudy

BecameApparent
GrossBeta‑RadioactivityinUpperAirlOJan.1972

GrossBeta‑RadioactivityinRainand

lOJan.1972

The14thTest
U.S.A.E.C.announced

China carried out anatomic
espJosion of the estimated scaIe
rangJngfrom20to200kiJotonsattheAtomicPower
ExperimentaIstationin
LopNorat3:00p.m.(Japanbomb

that

test

(a)DateTestwasConduc･(いScaleo一丁est:20･200(c)PlaceTestwasConduc
州 EffectsonJapan:Time)on18March1972.

DateFirst

HiqhestFiqureThe15thTe虞The･Barber

Atomicthatitannounced

hadPowerlnstituteinlndia
detectedaChinesenuclear

expIosiontestat12.55p.m.(Japantime)on27June.
1973.Radio

PekingCOnductedhydrogenannounced''China
on28Junebombtest overthe western(a)DateTestwasCondul(bIScaleotTe虻1･2mt(c)PlaceTestwasCondu(朗 EfI￠dsonJapan:

districtofChinaatl.00p.m.(Japantime)on27June:'

DateFirst

Objectsforstudy

HighestFigure

Effects
鮎cameApparent

GrossBeta‑RadioactivityinUpperAir

30June1973

30June1973

312･7p(Aい0Ver

GrossBeta‑RadioactivityinRainand

30June1973

1July1973

226.8]

lJuly1973

4July1973

6.Opic(KaDryFallout

GrossBeta‑RadioactivityinAirbone
Dust

The16thTe虞The

tndian AtomicEnergYComm由ionannounc･(a)DateTestwasCondu

edthatithaddetectedaChinesenucJearexpIosiontest(b)ScaJeofTest:about(c)PIaceTe或㈹SCondl
州【純血sotJapan:

at3:00p.m.(Japantime)8n17June,1974.And

U.S.A.E.C.announcedasthesame,tOO.

DateFirst

ObjectsforStudy

HighestFigur

Effects
BecameApparent

GrossBeta‑RadioactivityinUpperAir

19June1974

19June1973

1603±2(AいGrossBeta‑RadioactivityinRainand
Drv
Fallout

21June1974

21June1973

4.9pic(

7.CONCERMNGPROVIS10NALINDEX

l.CountermeasuresAgainst

FOR

Emergency

COUNTERMEASURESAGAJNSTRA

Casei)MonthlyamountofFaIloutofRadioactivity
MonthlyamountofFallout

Countermeasures

OfRadioactivity
FirstStage

2.5Curie/squarekilometer(1)Promotinginvestigationw･(2)Survei11anceofthemovem
radioactivity.

SecondStage

25Curie/squarekilometer(1)To呵einstructionstodri
filtrat10n(2)Toguideandassistthepr‑
foodsanddrinks.

ii)lodine131inRain･Water&miIk
Classification
Rain･Water

Countermeasures

Concentrationofiodine.131
3,000picocurie几itre(1)To由Veinstructionstowa(2)To由Veinstructionstodri

6,000picocurieAitre(1)To由Veinstructionstosto
drinkingfreshmilk(2)To由Veinstructionstowa

2.CountermeasuretobeTakenAgainstContinuingSituation

InterpretedamountofFallout

Countermeasures

Ofstrontium90
FirstStage

20millicurie/squarekilometer

Toobserveincrease/decreasementalradioactivity,andto.
COuntermeaSureS