RADIATION DATA
IN FUKUSHIMA DAIICHI
NUCLEAR POWER PLANT,
JAPAN
LTC Jiří Matějka
Ministry of Interior
General Directorate of FRS
jiri.matejka@grh.izscr.cz.
Trogir, CROATIA
24-26 March 2011
Hazmat Commission CTIF
1
Fukushima Daiichi
Nuclear Power Plant
Gamma Dose Rates
Next data was sent from MIC Brussels or The IAEA
to Operation and Information Centre of FRS
Prague last week in relation to radiation in:
Cities close to the Nuclear Power Plant
Location of the front-gate of the Nuclear Power
Plant
Location between reactors
Trogir, CROATIA
24-26 March 2011
Hazmat Commission CTIF
2
Gamma Dose Rates
in Fukushima Prefecture
CITIES on March 15 2011
MICRO Sv/h
Fukushima City – 61 km NW
18,6
Koriyama City – 58 km W
2,7
Shirakawa City – 81 km SW
4,1
Aizu Wakamutsu City – 97 km W
0,8*
Iwaki City – 43 km SSW
4,0
Minami Aizu City – 115 km WSW
AMBIENT NORMAL BACKGROUND
0,1
Trogir, CROATIA
24-26 March 2011
Hazmat Commission CTIF
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Gamma Dose Rates
at the Front-Gate
March 16 2011, Time
MICRO Sv/h
01:00
810
01:10
908
01:20
2 399
01:30
1 361
01:45
6 400
02:00
3 391
Trogir, CROATIA
24-26 March 2011
Hazmat Commission CTIF
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Gamma Dose Rates
between Reactors
March 15 2011
MILI Sv/h
Min.
200
Max.
400
Trogir, CROATIA
24-26 March 2011
Hazmat Commission CTIF
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Doses of Medical Examination
Diagnostics
Dose in MILI Sv
X-ray (RTG)
0,7 – 5,0*
CT (Computed Tomography)
3 – 25*
* According to the age and technical
conditions of devices
Trogir, CROATIA
24-26 March 2011
Hazmat Commission CTIF
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Conclusion I
If there is natural radiation background in Japan 0,1 MICRO Sv/h
that is right the mass media statement that Fukushima City had
almost 200 times higher radiation on March 15 than Japanese
background.
If you go to a CT (Computed Tomography) diagnistic
examination you will obtain as the dose as at the Fukushima
Nuclear Power Plant front-gate after 5 hours exposition or in
Fukushima City after 31 days exposition (radiation related to
March 15).
In Kotka, Finland my shoulder will be dislocated, after that I was sick
with pneumonia and so I had to visit 5 times X-ray (RTG)
diagnostic centre and so I approximatelly obtained as the dose as
in Iwaki City after 30 days exposition (related to March 15).
Trogir, CROATIA
24-26 March 2011
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Conclusion II
Nation
Radiation limit
How long can people stay in
Fukushima City in March 2011
to get over this limits?
(related to March 15)
Czech
1 MILI Sv/year
population
53 hours
Italian
2 MILI Sv/year
population
106 hours
?
?
?
Czech
50 MILI Sv/year
radiation workers
110 days
Trogir, CROATIA
24-26 March 2011
Hazmat Commission CTIF
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Czech Republic
Source
Gamma Dose Rate
in MICRO Sv/h
Gamma Dose Rate
in MILI Sv/year
Natural Background
0,05 – 0,35 MICRO Sv/h
1,8
Space (Cosmic)
Radiation
-
2–4*
* Aircraft pilot
examination
Trogir, CROATIA
24-26 March 2011
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Japanese Limits
of Weight Activity
(Radioactivity Concentration)
Nuclide
I-131
Cs-137
Drinking water and milk
300 Bq/kg*
200 Bq/kg
Vegetables
2 000 Bq/kg
500 Bq/kg
* 100 Bq/kg for infants
Trogir, CROATIA
24-26 March 2011
Hazmat Commission CTIF
10
Weight Activity
(Radioactivity Concentration)
of Spinach (open field)
CITIES
Bq/kg
Nuclides I-131/Cs-137
Hitachi City
54 100 / 1931
25 200 / 1105
Hitach Omiya
19 200 / 1040
17 800 / 908
Naka
16 100 / 911
13 500 / 966
Hokota
7 710 / 407
356 / 9 (onion)
Moriya
2 100 / Lower than detection limit
121 / Lower than detection limit
Trogir, CROATIA
24-26 March 2011
Hazmat Commission CTIF
11
Next data
in the International Atomic Energy Agency
Reports
Sharing information
Trogir, CROATIA
24-26 March 2011
Hazmat Commission CTIF
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