Measurement of Radiation Dose for Air in the Ports (the Pacific side of Northeast Japan) http://www.mlit.go.jp/kowan/kowan_fr1_000041.html Annual exposure Measurement points H29.1.12 H29.1.19 H29.1.26 calculation Distance from Fukushima Daiichi Nuclear Power Station ① Port of Tokyo Oi Wharf 0.03 μSv/h 0.05 μSv/h 0.05 μSv/h = 0.00005 mSv/h 0.44 mSv Port of Honmoku Wharf ② 0.04 μSv/h 0.04 μSv/h 0.04 μSv/h = 0.00004 mSv/h 0.35 mSv Yokohama (BC gate) Kawasaki Environment Synthesis ③ Port of Kawasaki Laboratory 0.02 μSv/h 0.02 μSv/h 0.02 μSv/h = 0.00002 mSv/h 0.18 mSv ⑩ <4km from the port> (AM8:00) (AM8:00) (AM8:00) Chiba Prefectural Port of Chiba Environmental Research Center μSv/h μSv/h μSv/h = 0.00003 mSv/h mSv ④ 0.03 (AM8:00) 0.03 0.03 0.26 <9km from the port> (AM8:00) (AM8:00) ⑤ Port of Kashima Bureau of Port of Kashima - μSv/h - μSv/h - μSv/h = - mSv/h - mSv (AM8:00) (AM8:00) (AM8:00) ⑥ Port of Onahama Fujiwara Wharf - μSv/h - μSv/h - μSv/h = - mSv/h - mSv ⑨ (AM) (AM) (AM) ⑧ ⑦ Port of Souma No.2 Wharf - μSv/h - μSv/h - μSv/h = - mSv/h - mSv (AM) (AM) (AM) ⑦ Port of Sendai- μSv/h μSv/h μSv/h = - mSv/h mSv Fukushima Daiichi ⑧ shiogama Takasago Container Terminal - - - - Nuclear Power Station 100km ⑥ Port of μSv/h - μSv/h μSv/h = - mSv/h mSv ⑨ Ishinomaki Nakajima Wharf - - - 150km Research Institute for Environmental Sciences ⑩ Port of Kuji 0.02 μSv/h 0.02 μSv/h 0.02 μSv/h = 0.00002 mSv/h 0.18 mSv and Public Health (AM) (AM) (AM) 200km ⑤ ① ①Source: Bureau of Port and Harbor Tokyo Metropolitan Government ③ ④ http://www.kouwan.metro.tokyo.jp/jishin_kouwankyoku_oshirase/measurement/> ② ⑧⑨Source: Miyagi Prefecture ②Source: Yokohama Port Corporation <http://www.yokohamaport.co.jp/radiation/#air2/> <http://www.pref.miyagi.jp/soshiki/kouwan/housyano.html> ③Source: Kawasaki City <http://www.atmp-kawasaki.jp/> ⑩Source: Iwate Prefecture ④Source: Chiba Prefecture <http://www.pref.chiba.lg.jp/taiki/h23touhoku/houshasen/index-sokutei.html> <http://www1a.biglobe.ne.jp/radiation-monitoring-system/pc/index.html> ⑤Source: Ibaraki Prefecture <http://www.pref.ibaraki.jp/doboku/kowan/hosya.html> ⑪Source: Aomori Prefecture <http://www.aomori-genshiryoku.com/> ⑥⑦Source: Fukushima Prefecture <https://www.pref.fukushima.lg.jp/sec/41045d/houshasen.html> According to the Ministry of Education, Culture, Sports, Science and Technology, examples of exposure level of radiation in daily life is as below. - Chest X-ray (once) 0.05 mSv ≒ 1) 1 Gray/hour (Gy/hr) 1 Sievert /hour (Sv/hr). - 1 roundtrip between Tokyo and New York by air 0.2 mSv 2) 1 mili-Sievert (mSv) = 1000 micro-Sievert (μSv) 1 micro-Sievert (μSv) =1000 nano-Sievert (nSv) - Stomach X-ray (once) 0.6 mSv 3) “Annual exposure calculation” is the estimation under the condition that the hourly radiation dose According to the WHO, a person is exposed to approximately 3.0mSv/year on average. measurement at the measurement point is accumulated 24 hours throughout the year. 4) The figure in parenthesis below the measured value indicates the measurement time Measurement of Radioactivity for Seawater in the Ports Measurement of Radioactivity for Seawater in the Ports (the Pacific side of Northeast Japan) http://www.mlit.go.jp/kowan/kowan_fr1_000041.html Iodine Cesium Cesium Date Distance from Fukushima Measurement Points I-131 Cs-134 Cs-137 Daiichi Nuclear Power Station Uraga Channel ND ND ND ① Tokyo bay H29.2.1 (ND = Less Than 5Bq/kg) (less than 5Bq/kg) (less than 5Bq/kg) (less than 5Bq/kg) ⑪ ② Mid point between Oi Terminal and Port of Tokyo Aomi Terminal (ND = Less Than 2-3Bq/kg) H29.1.26 ND ND ND Port of Yokohama Passage/ ND ND ND ③ Tsurumi Passage (ND = Less Than 1Bq/kg) H29.1.30 Yokohama (less than 20Bq/kg) (less than 20Bq/kg) (less than 20Bq/kg) Kawasaki Passage ④ Port of Kawasaki H29.1.26 ND ND ND (ND = Less Than 1Bq/kg) Chiba Passage ⑤ Port of Chiba H29.1.30 ND ND ND (ND = Less Than 1Bq/kg) 3km off the coast of Hirai ⑥ Port of Kashima H28.12.8 - ND ND (ND = Less Than 1-2Bq/kg) ⑩ 1) No.4 Wharf (ND = Less Than 1Bq/kg) 1) ND ND ND ⑦ Port of Onahama H29.1.31 ⑨ 2) Otsurugi Wharf (ND = Less Than 1Bq/kg) 2) ND ND ND No.2 Wharf ⑧ ⑧ Port of Souma H29.1.30 ND ND ND (ND = Less Than 1Bq/kg) Fukushima Daiichi Port of Takasago Container Terminal Nuclear Power Station ⑨ H29.12.21 ND ND ND Sendaishiogama (ND = Less Than 1Bq/kg) 100km ⑦ Port of Nakajima Wharf ⑩ H29.12.21 ND ND ND Ishinomaki (ND = Less Than 1Bq/kg) 150km Port of Hattaro Area (in the port) ⑪ H29.1.23 ND ND ND Hachinohe (ND = Less Than 1-2Bq/kg) (less than 1.6Bq/L) (less than 1.1Bq/kg) (less than 1.0Bq/L) 200km ⑥ ND=Not Detected、LTD=Less Than Detectable ①Source: Kanto Regional Development Bureau, MLIT ② ④ <http://www.pa.ktr.mlit.go.jp/kyoku/03info/09housyasen/160301jpn.pdf> ⑨⑩Source: Miyagi Prefecture ⑤ ②Source: Bureau of Port and Harbor, Tokyo Metropolitan Government < http://www.pref.miyagi.jp/soshiki/kouwan/housyano.html#kaisui> ③ ① <http://www.kouwan.metro.tokyo.jp/jishin_kouwankyoku_oshirase/measurement/> ⑪Source: Aomori Prefecture <http://www.pref.aomori.lg.jp/ ③Source: Yokohama Port Corporation <http://www.yokohamaport.co.jp/radiation/#air2/> soshiki/kendo/kowan/housya.html> ④Source: Kawasaki City <http://www.city.kawasaki.jp/580/page/0000031724.html> ⑤Source: Chiba Prefecture <http://www.pref.chiba.lg.jp/kouwan/houshasen/h23sokuteikekka.html> ⑥Source: Ibaraki Prefecture <http://www.pref.ibaraki.jp/doboku/kowan/hosya.html> 【Reference】 ⑦⑧Source: Fukushima Prefecture <https://www.pref.fukushima.lg.jp/sec/41045d/houshasen.html> ●Standard value under the Food Sanitation Act of Japan (enforced on April 1st, 2012) is shown as follows; - Drinking water; under 10Bq (becquerel) /1kg water ※Bq (becquerel) is defined as the activity of a quantity of radioactive material. 1) Sample is collected from surface of the sea ※The sum total of target radioactive materials (Cesium 134, Cesium 137, Strontium 90, 2) ‘Not Detected’, “Less than Detectable” mean the value below detection limit. 3) The figure in parenthesis below ‘ND(Not Detected)’ indicates detection limit level. Plutonium, Ruthenium 106)..