Food Safety
Ryo Yamaguchi, MD
Director for Medical Services
Bureau of Health and Safety
Department of Health and Welfare
H kk id Government
Hokkaido
GDispatch to Fukushima prefecture
for the member of the survey team
team.
March 26th ～ April 3rd 2011

GM survey metermeasurement

Survey teamHow to protect
pradioactive substances• Distance
Fukushima power plant‐Hokkaido(south end) 400km
Fukushima power plant‐Sapporo
around 700km
Three mile island‐New York241km• Screen, cover• TimeToday’ss contentsToday• Air dose rate of radioactive substancesin Hokkaido (monitoring post)• Radioactive substance test for
agricultural, animal, aquatic products
around Fukushima prefecture• Monitoring
M it i off radioactive
di ti substances
btfor fish in Hokkaido1) Measurement of radioactive substances• Purpose :– to monitor the baseline of radioactive
substances in the air and falling matter– to findfi d theh iinfluence
floff theh FFukushimak hi
nuclearlelectric power stations

Air dose rate of radioactive substances• Time : every hour((from 17:00, March 12th 2011))• Place : North 19, West 12, North ward
Sapporo city HokkaidoHokkaido, Japanat latitude 43 north and longitude 141 east
• Result ( as of 09:00, April 20th 2011 )27‐45 nGy/h (average 29)29)・・・normal
normal range
in the past 20‐105 nGy/hExpansion of objectives• If air dose rate of radioactive substances weredetected over the reference value, we would
expand the objectives； soil,soil rice
rice, vegetables
vegetables,
milk, fish, sea water and tap water etc.
• Webb siteidata (Japan)
http://www.mext.go.jp/a_menu/saigaijohou/syousai/130395
6.htm

d (H kk id )data(Hokkaido)
http://www.iph.pref.hokkaido.jp/eiken_housyanou/eiken_housyanou.htm
ht2)) Radioactive substance test for
agricultural, animal, aquatic products
aroundd FFukushimak hi
prefecturef• The test is conducted in 11 prefectures around
Fukushima prefecture where radioactive
leakage from the nuclear plant occurred.
• If the radioactive substance were detected
over the reference value of the products, thedistribution of the products would be strictlyprohibited.

The 11 prefecturesthat conductedradioactivesubstancebtttestt
Fukushima daiichi electric plantpAs of 21st April 2011

The 11 prefecturesthat conductedradioactivesubstancebtttestt
F k hi
Fukushima
ddaiichi
ii hi electricl t i plantl t

Area restrictingg distribution
Area previously restricting
distribution
Area with no restrictions

Restricted Food
Miluku牛乳

SpinachHohrensoh

ホウレン草

K ki
KakinakKakina

カキナ

Garland chrysanthemum

Syungiku

春菊

Ging‐geng‐cai
Ginggeng cai

Chingensai

青梗菜Sanchu (Asian lettuce)

Sanchuサンチュ

Kyabetsu

きゃべつ

Cauliflower & broccoli

カリフラワー

ブロッコリー

TurnipKabu

カブParsley

Paseri

パセリ

CelerySeroriセルリー
セルリ

Shiitake (alley) mushroomShiitake

しいたけ

Kounago

こうなご

Milk
Leafy vegetables

OtherBall‐like leaf vegetable

FishCabbage

young lancefish

http://www.mhlw.go.jp/stf/houdou/2r9852000001a0vw-att/2r9852000001a11y.pdf
As of 21th April 2011

Why should so many leafy vegetables
restricted for distribution?
• Because the radioactive substances
precipitate on farm vegetables
vegetables.
• The reference value shows the amount perweighth off radioactive
dsubstances,bso, thehlarger the surface area of leaf, the moreradiation.

3)Monitoring of radioactivesubstances for fish in Hokkaido• As a cautionary measure, the Hokkaido
ggovernment has tested the radioactive
substances in many kinds of food; rice,vegetables milk,
vegetables,
milk fish,
fish and also,
also soil,
soil sea waterand tap water etc.
• Allll tests hhave shown
hnegative, or lless thanh thehreference value, but we will continue carefulmonitoring.

Monitoring test

Date: April 15th
Fish: Salmon
Place: Pacific Ocean

Result
Date fishplace

I‐131

4/15 salmon Pacific ND
R.V.

Cs‐1370.45

2000 500Bq/kg Bq/kg

Cs 137 was less than a thousandth of the reference value
Cs-137value.

FAQ
• Q1.
Q1 IIs didistributed
ib d ffoodd safe
f to eat iin H
Hokkaido
kk id ?
• A1. Distribution of food showing radiation doses
over theth reference
fvaluel iis strictlyt i tl restrictedt i t dbby
the Act on Special Measures concerning Nuclear
Emergency Preparedness.
According Fukushima Prefecture,
Prefecture it is impossible
to distribute the agricultural products from theevacuated area around the electric plant.
plant• Q2. If we unknowingly eat the food overrecommended radiation dose, dose it
influence an individual's health immediately ?
• A2. Distribution of food showing radiation
doses over reference values are strictly limitedby the Law.

• Q3.
Q3 IIs it safe
f tto use ttap watert ffor ddrink
i k or ffor
bathing ?
• A3.
A3 We measured radioactive substance in tap
water at every prefecture in Japan and if abnormal
valueslwere detected
dd , we would
ld alert
l residentsdto
take all necessary steps not to use it.
(e.g., For infants, use a bottled water.)• In the present situation
situation, in Hokkaido,
Hokkaido there is noneed to worry about using tap water.

Tap water test
• In Sapporo city, March 18th～April 25th
• In the other area : Hakodate, Wakkanai, Obihiro,Nemuro, April 25th
• Frequency: Sapporo city every day
Otherh area once a monthh• All tests have shown negative of I‐131 and Cs‐137.
As of April 26th 16:00

Food Safety Commission• FAQ:pg jpgg_p
http://fsc.go.jp/sonota/emerg/emerg_QA.pdfas of 22nd April 2011, sorry Japanese onlyThank you for your attention!