8/7/2019 Monitoring of Radiation - Fukushima - 22.04

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MEXTʼs sampling was done along a line 30

Sampling Points around Fukushima Daiichi NPS

0.5 - 2.0 km off the coast

of Oarai Town (130 km south

of Fukushima Daiichi NPS)

20 km off the coast of Muroran,

Erimo and Kushiro (approx. 500 -

650 km north of Fukushima Daiichi NPS)

8/7/2019 Monitoring of Radiation - Fukushima - 22.04

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T h e L a t e s t R e s u l t s o f I - 1 3 1 M o n i t o r i n g i n S e a w a t e rby the Ministry of Education, Culture, Sports, Science and Technology (MEXT)

as of April 21 (Thu)

Sampling Point Date Surface (Bq/L) Depth (Bq/L)

M-A April 17 Not Detected Not Detected

M-B April 19 Not Detected Not Detected

M1 April 17 Not Detected Not Detected

M2 April 19 Not Detected Not Detected

M3 April 17 Not Detected Not Detected

M4 April 19 Not Detected Not Detected

M5 April 17 68.4 Not Detected

M6 April 19 18.8 Not Detected

M7 April 17 49.0 Not Detected

M8 April 19 Not Detected Not Detected

M9 April 17 36.6 Not Detected

M10 April 19 Not Detected Not Detected

Sampling Point Date (Bq/cm3)

T1 April 20 0.048

T2 April 20 0.047

T3 April 20 0.19

T4 April 20 0.13

T5 April 18 0.11

The Latest Results of I-131 Monitoring in Seawaterby Tokyo Electric Power Co. (TEPCO)

Fukushima Daiichi

Sampling Points by MEXT and TEPCO

8/7/2019 Monitoring of Radiation - Fukushima - 22.04

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Sampling Results of Marine Fish Products

Fisheries activities for Sand Lances 

So far, radioactive iodine andces ium beyond provis ionalstandards (intake limits) weredetected in Sand Lances (sand

eels) only. The government toldFukushima Prefecture to suspendshipments of Sand Lances.

A l l f i s h e r i e s a c t i v i t i e s a r evoluntarily refrained in FukushimaPrefecture.

8/7/2019 Monitoring of Radiation - Fukushima - 22.04

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Concentration of Iodine 131 in Nearby Sea of Fukushima Daiichi (1F) NPS (up to April 21)

Intake Limits in Foods

Sand Lances fished at the points

around 40-60 km south of 1F

20km off the coast ofMuroran, Erimo and Kushiro

(D1 through D3, 500-650km north of 1F)Not Detected

0.5-2.0km off the coast ofOarai Town (O1, 130km south of 1F)

40km south of 1F (M9, M10)

30km off the coast (M1 through M8)

15km off the coast (T5 through T10)

Iwasawa Shore(T4, 16km south of 1F)

Fukushima Daini NPS

(T3, 10km south of 1F)

around Discharge Canal of 1F(T1, T2)

Seawater at the point whereHigh-level Water was flown out

High-level Radioactive Waterin 1F site

Standard Concentration Limit in Water

Standard Value

Latest Value(max. value in case of multiple points)

Max. Value

2000Bq/kg

I-131 Concentration (Water: Bq/cc Food: Bq/g)

0.04 Bq/cc

1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 1.0E+07 1.0E+

3km off the coast (T11 through T14)

8km off the coast (T15, T16)