The Fukushima Daiichi Accident Fukushima The The Fukushima Daiichi Accident Technical Volume 4/5 Technical Volume 4/5 Radiological Consequences Radiological Consequences Radiological PO Box 100, Vienna International Centre 1400 Vienna, Austria Printed in Austria ISBN 978–92–0–107015–9 (set) 1 THE FUKUSHIMA DAIICHI ACCIDENT TECHNICAL VOLUME 4 RADIOLOGICAL CONSEQUENCES The following States are Members of the International Atomic Energy Agency: AFGHANISTAN GERMANY OMAN ALBANIA GHANA PAKISTAN ALGERIA GREECE PALAU ANGOLA GUATEMALA PANAMA ARGENTINA GUYANA PAPUA NEW GUINEA ARMENIA HAITI PARAGUAY AUSTRALIA HOLY SEE PERU AUSTRIA HONDURAS PHILIPPINES AZERBAIJAN HUNGARY POLAND BAHAMAS ICELAND PORTUGAL BAHRAIN INDIA QATAR BANGLADESH INDONESIA REPUBLIC OF MOLDOVA BELARUS IRAN, ISLAMIC REPUBLIC OF ROMANIA BELGIUM IRAQ RUSSIAN FEDERATION BELIZE IRELAND RWANDA BENIN ISRAEL SAN MARINO BOLIVIA, PLURINATIONAL ITALY SAUDI ARABIA STATE OF JAMAICA SENEGAL BOSNIA AND HERZEGOVINA JAPAN SERBIA BOTSWANA JORDAN SEYCHELLES BRAZIL KAZAKHSTAN SIERRA LEONE BRUNEI DARUSSALAM KENYA SINGAPORE BULGARIA KOREA, REPUBLIC OF SLOVAKIA BURKINA FASO KUWAIT SLOVENIA BURUNDI KYRGYZSTAN SOUTH AFRICA CAMBODIA LAO PEOPLE’S DEMOCRATIC SPAIN CAMEROON REPUBLIC SRI LANKA CANADA LATVIA SUDAN CENTRAL AFRICAN LEBANON SWAZILAND REPUBLIC LESOTHO SWEDEN CHAD LIBERIA SWITZERLAND CHILE LIBYA SYRIAN ARAB REPUBLIC CHINA LIECHTENSTEIN TAJIKISTAN COLOMBIA LITHUANIA CONGO LUXEMBOURG THAILAND COSTA RICA MADAGASCAR THE FORMER YUGOSLAV CÔTE D’IVOIRE MALAWI REPUBLIC OF MACEDONIA CROATIA MALAYSIA TOGO CUBA MALI TRINIDAD AND TOBAGO CYPRUS MALTA TUNISIA CZECH REPUBLIC MARSHALL ISLANDS TURKEY DEMOCRATIC REPUBLIC MAURITANIA UGANDA OF THE CONGO MAURITIUS UKRAINE DENMARK MEXICO UNITED ARAB EMIRATES DJIBOUTI MONACO UNITED KINGDOM OF DOMINICA MONGOLIA GREAT BRITAIN AND DOMINICAN REPUBLIC MONTENEGRO NORTHERN IRELAND ECUADOR MOROCCO UNITED REPUBLIC EGYPT MOZAMBIQUE OF TANZANIA EL SALVADOR MYANMAR UNITED STATES OF AMERICA ERITREA NAMIBIA URUGUAY ESTONIA NEPAL UZBEKISTAN ETHIOPIA NETHERLANDS VENEZUELA, BOLIVARIAN FIJI NEW ZEALAND REPUBLIC OF FINLAND NICARAGUA VIET NAM FRANCE NIGER YEMEN GABON NIGERIA ZAMBIA GEORGIA NORWAY ZIMBABWE The Agency’s Statute was approved on 23 October 1956 by the Conference on the Statute of the IAEA held at United Nations Headquarters, New York; it entered into force on 29 July 1957. The Headquarters of the Agency are situated in Vienna. Its principal objective is “to accelerate and enlarge the contribution of atomic energy to peace, health and prosperity throughout the world’’. THE FUKUSHIMA DAIICHI ACCIDENT TECHNICAL VOLUME 4 RADIOLOGICAL CONSEQUENCES COPYRIGHT NOTICE All IAEA scientific and technical publications are protected by the terms of the Universal Copyright Convention as adopted in 1952 (Berne) and as revised in 1972 (Paris). The copyright has since been extended by the World Intellectual Property Organization (Geneva) to include electronic and virtual intellectual property. Permission to use whole or parts of texts contained in IAEA publications in printed or electronic form must be obtained and is usually subject to royalty agreements. Proposals for non- commercial reproductions and translations are welcomed and considered on a case-by-case basis. Enquiries should be addressed to the IAEA Publishing Section at: Marketing and Sales Unit, Publishing Section International Atomic Energy Agency Vienna International Centre PO Box 100 1400 Vienna, Austria Fax: +43 1 2600 29302 Tel.: +43 1 2600 22417 Email: [email protected] http://www.iaea.org/books ©IAEA, 2015 Printed by the IAEA in Austria August 2015 STI/PUB/1710 IAEA Library Cataloguing in Publication Data The Fukushima Daiichi accident — Vienna : International Atomic Energy Agency, 2015. v. ; 30 cm. STI/PUB/1710 ISBN 978–92–0–107015–9 (set) Includes bibliographical references. 1. Nuclear reactor accidents — Analysis. 2. Nuclear power plants — Accidents — Analysis. 3. Nuclear reactor accidents — Japan — Fukushima-ken. 4. Radioactive pollution — Health aspects — Japan — Fukushima-ken. 5. Radioactive waste management. 6. Emergency management. I. International Atomic Energy Agency. IAEAL 15–00988 EDITORIAL NOTE This publication has been prepared from contributions submitted by many international experts to the five Working Groups for the preparation of the technical volumes. The content does not necessarily reflect the views of IAEA Member States, or the organizations nominating experts. Great care has been taken to maintain the accuracy of information contained in this publication. Neither the IAEA, nor its Member States, however, assume any responsibility for consequences that may arise from its use, nor are any warranties made of any kind in connection with this publication. This publication is not intended to address issues of responsibility, legal or otherwise, for acts or omissions on the part of any person or entity. Extracts from this publication may be freely used elsewhere, provided that acknowledgement of the source is made. If any attribution in this publication indicates that the information (including photographs and graphics) is from a source or site external to the IAEA, permission for reuse must be sought from the originating source. The use of particular designations of countries or territories does not imply any judgement by the IAEA as to the legal status of such countries or territories, or of the delimitation of their boundaries, or of their authorities and institutions. The mentioning of names of specific companies or products, whether or not indicated as registered, does not imply any intention to infringe proprietary rights, nor should it be construed as an endorsement or recommendation on the part of the IAEA. The IAEA assumes no responsibility for the accuracy or continued existence of URLs for external or third party Internet web sites referred to in this publication and does not guarantee that any content on such web sites is, or will remain, accurate or appropriate. ACKNOWLEDGEMENTS Financial assistance was provided by Canada, Japan, the Russian Federation, the United Kingdom and the United States of America. In-kind contributions were received from Argentina, Australia, Belarus, Brazil, Canada, China, Cuba, the Czech Republic, Finland, France, Germany, Ghana, Iceland, India, Indonesia, Israel, Italy, Japan, the Republic of Korea, Malaysia, Mexico, Morocco, the Netherlands, New Zealand, Norway, Pakistan, the Philippines, Poland, the Russian Federation, Slovakia, South Africa, Spain, Sweden, Switzerland, the Syrian Arab Republic, Turkey, Ukraine, the United Arab Emirates, the United Kingdom, the United Republic of Tanzania and the United States of America. In-kind contributions were also received from the European Commission, the Food and Agriculture Organization of the United Nations, the International Commission on Radiological Protection, the International Labour Organization, the International Nuclear Safety Group, the OECD Nuclear Energy Agency, the United Nations Scientific Committee on the Effects of Atomic Radiation, the World Association of Nuclear Operators and the World Meteorological Organization. The Government of Japan provided invaluable support by making available a considerable amount of information, arranging for Japanese experts to support the work on the report and ensuring logistical assistance for bilateral meetings in Japan. The United Nations Scientific Committee on the Effects of Atomic Radiation supported the IAEA by sharing the relevant database of references from its 2013 report and allowing information and figures from this report to be reproduced. The IAEA thanks the large number of experts who were involved in this report. It is the result of the dedicated efforts of many people. All participants listed at the end of this technical volume made valuable contributions, but a particularly heavy load was borne by the Co-Chairs and coordinators of the working groups. The efforts of many expert reviewers, including members of the International Technical Advisory Group, are also gratefully acknowledged. THE REPORT ON THE FUKUSHIMA DAIICHI ACCIDENT At the IAEA General Conference in September 2012, the Director General announced that the IAEA would prepare a report on the Fukushima Daiichi accident. He later stated that this report would be “an authoritative, factual and balanced assessment, addressing the causes and consequences of the accident, as well as lessons learned”.1 The report is the result of an extensive international collaborative effort involving five working groups with about 180 experts from 42 Member States (with and without nuclear power programmes) and several international bodies. This ensured a broad representation of experience and knowledge. An International Technical Advisory Group provided advice on technical and scientific issues. A Core Group, comprising IAEA senior level management, was established to give direction and to facilitate the coordination and review. Additional internal and external review mechanisms were also instituted. The organizational structure for the preparation of this publication is illustrated in Fig. 1. FIG. 1. IAEA organizational structure for the preparation of the report on The Fukushima Daiichi Accident. The Report by the Director General consists of an Executive Summary and a Summary Report. It draws on five detailed technical volumes prepared by international experts and on the contributions of the many experts and international bodies involved. The five technical volumes are for a technical audience