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用語 ALP ALPS treated water Resources Ministry of Foreign Affairs of Japan The safety of the discharge of ALPS treated water What is ALPS treated water? Q&A Q&A YouTube Why is it appropriate to discharge ALPS treated water into the sea? \| MOFA Press Releases Request for Discussions under the RCEP Agreement on China’s Measures to Suspend Imports of all Aquatic Products originating in Japan Submission of Japan’s Counterargument to the WTO against China’s notification of emergency measures METI: Nuclear Accident Response Office, Electricity and Gas Industry Department, Agency for Natural Resources and Energy ALPS Treated Water Q&A ALPS treated water Q&A Ministry of Agriculture, Forestry and Fisheries Fisheries Agency Results of the monitoring on radioactivity level in fishery products MOE ALPS Treated Water Marine Monitoring Information Portal site Health Effects of Radiation: 5 Themes BOOKLET BOOKLET to Provide Basic Information Regarding Health Effects of Radiation ALPS Treated Water ALPS Treated Water - Purification of Contaminated Water - Nuclear Regulation Authority ALPS treated water discharge related materials Reconstruction Agency The plan, the science and the safety: Discharging ALPS treated water JAEA Analysis of ALPS treated water as third-party Tokyo Electric Power Company Holdings, Inc. Treated water portal site What TEPCO would like to convey regarding ALPS treated water Q&A I will answer questions from you IAEA Fukushima Daiichi ALPS Treated Water Discharge Real time monitoring Data from Fukushima Daiichi ALPS Treated Water Discharge FAQs Fukushima Daiichi ALPS Treated Water Discharge - FAQs Press release IAEA Presents Monitoring Data from Japan on Treated Water Release from Fukushima Daiichi IAEA Holds First Meeting of International Task Force Set Up to Review Safety of Fukushima Treated Water Release FAQ Why 1,500 Bq/L ? The Japanese government has taken actions in accordance with the documents of international organizations regarding the release of treated water containing radioactive materials into the environment, and these actions have been confirmed by international organizations. In order to minimize the impact on the surrounding environment and the reputational damage, Japan has set a maximum tritium concentration (1,500 Bq/l) for the discharge and a total annual tritium discharge limit (22 TBq per year). IAEA Comprehensive Report on the Safety Review of the Alps-Treated Water at the Fukushima Daiichi Nuclear Power Station Note: The dose due to effluent water assumes that 2 liters of effluent water with the maximum discharge limit and the highest concentration of the sum of the ratios to the concentration limits of each nuclide were drunk daily at the drain. This concentration applies to any liquid discharged from the Fukushima Daiichi Nuclear Power Station based on its independent on-site analysis. In designating Fukushima Daiichi NPS as a Specific Nuclear Facility additional effective dose at the site boundaries should be less than 1 mSv/y, considering "dose due to direct and skyshine radiation," "dose due to gases," and "dose due to liquids" Effective dose from effluent water is the sum of: * water discharge (0.22mSv/y; discharged water such as bypassed groundwater and subdrain treated water) and * water sprinkle within the site (0.075mSv/y; sprinkled water such as rainwater and treated Unit 5/6 stagnant water). According to Japanese rules, the concentration of tritium in effluent water is 60,000 Bq/l The radioactive concentration limit for tritium in effluent water discharged from facilities in Japan is 60,000 Bq/l. 60,000 Bq/l is the concentration that would result in a committed effective dose of 1 mSv for one year of ingestion if 2 l of water at that concentration were drunk every day. Suspension Level for Discharge Suspension Level for Discharge is 700 Bq/l at vicinity of the discharge point (10 points within 3 km of the discharge point at FDNPS) and 30 B/L at outside the vicinity of the discharge point (4 points in a 10 km x 10 km area around the discharge point) Investigation Level is 350 Bq/liter 参考資料等 Japan Health Physics Society 53rd JHPS Annual Meeting， JHPS organized a special symposium， “How do we find the solution to radiological protection of tritium water?” Ichiro Yamaguchi. What Can Radiation Protection Experts Contribute to the Issue of the Treated Water Stored in the Damaged Fukushima Daiichi Nuclear Power Plant?. Journal of Radiation Protection and Research. 2021, Vol.46, No.1, p.24. Existing exposure situation or planned exposure situation Japan has not incorporated dose constraints into its laws and regulations. Dose constraints is not a concept that applies to existing exposure situations. The relevant international safety standards require the establishment of dose constraints as part of the process for optimization of protection for any planned exposure situation. For the discharge of the ALPS treated water, the establishment of a prospective and discharge-related restriction on the individual dose attributable to the discharge, provides a basic level of protection for the most highly exposed individuals due to the discharge, and serves as an upper bound on the dose in the optimization of protection for the discharge. After discussions between the Task Force and METI/TEPCO during the first mission, the Task Force noted that the concept of a dose constraint does not exist in Japanese law.Following discussions with the Task Force, NRA confirmed that the criterion of 0.05 mSv per year established by NRA for the discharge of ALPS treated water – which is the operational target for nuclear power stations in Japan – could be interpreted as a dose constraint. Paragraph 5.16 of GSG-9 [9] states that “in practical terms, dose constraints should be selected within the range of 0.1 to less than 1 mSv in a year”. With this in mind, the Task Force noted that the selected dose constraint of 0.05 mSv per year is below this range and is therefore conservative.		おすすめキーワードの例トリチウム甲状腺コミュニケーション新着情報・決定しきい値（決定限界）・不確実性のロンダリング装置（としての統計学？）・ALPS treated water ・シングル・ボイス・電子スピン共鳴法を用いた線量推計・非医療目的での放射線を利用した人体のイメージング最終更新記事・肥料や堆肥に含まれる放射性物質・放射性セシウムのCodexの基準と日本の食品の基準・青森県の野生キノコ・プール解析 pool analysis ・管理区域 controlled area ・原子力発電所事故後の体表面スクリーニング・トリチウムの化学形別の線量換算係数・半減期 half life ・WHOと米国の水道水中の放射性物質の基準の違い・正当であること justification 記事一覧・学習問題（分野別）・用語（五十音順）アクセス数トップ10 ・ホット・パーティクル hot particle ・原子力発電所事故後の体表面スクリーニング・子孫核種 progeny nuclide ・余命損失 Loss of life expectancy ・県民健康調査 Fukushima Health Survey ・安定ヨウ素剤 stable iodine tablets ・サブマージョン submersion ・放射線リスクコミュニケーション相談員支援センター Support center for social workers engaged in recovery from the nuclear disaster ・薪ストーブをめぐる近隣トラブル・不当表示 misleading representation

更新日：2023年09月07日　登録日：2020年03月08日
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