Standpoint of the French Institute for Radioprotection and Nuclear Safety (IRSN) on the impact of radioactive releases from the Fukushima-Daiichi nuclear.

Slides:

Advertisements

Similar presentations

Examples of innovating maritime actions in Basse Normandie More than 400 kilometers of littoral.

Advertisements

Sejkora: What is RETS-REMP?

WATER POLLUTION.

FUKUSHIMA, DESCRIPTION OF THE ACCIDENT AND CONSEQUENCES TO THE ENVIRONMENT Dragoslav Nikezic Faculty of Science, University of Kragujevac, Serbia

RADINUCLIDES IN THE OCEANS: a tool for understanding the ecosystems functioning Roberta Delfanti ENEA – Marine Environment Research Centre, La Spezia IAEA.

Growth and decay functions Exponential functions.

Experiences from testing the ERICA Integrated Approach Case study application of the ERICA Tool and D-ERICA.

Nuclear Physics & Society (2009) 1 Radioactivity Three main types, all release energy through the relation Q=  E=  mc 2 –A–Alpha (  ) decay Emission.

Radiation occurs in nature…the earth is ‘bathed’ in radiation from a variety of sources. Humans have evolved with these levels of radiation in the environment.

Marine Environment Laboratory Department of Nuclear Sciences and Applications International Atomic Energy Agency Marine Environment Laboratory Activities.

Nuclear Power Plants. What do nuclear power plants release? Energy! How do these power plants provide us with energy? Energy is collected from the nucleus.

Chapter 12 Nuclear Energy. Overview of Chapter 12 o Introduction to Nuclear Power Atoms and radioactivity Atoms and radioactivity o Nuclear Fission o.

Nuclear Fusion Process during which two or more atomic nuclei merge and form one heavier nucleus Causes the release or absorption of large quantities of.

Radiological Monitoring of Air and Drinking Water in British Columbia Following the Fukushima Nuclear Incident Environmental Health Services (EHS) British.

Radionuclide dispersion modelling

Nuclear energy Nuclear energy = energy that holds together protons and neutrons within the nucleus of an atom We harness this energy by converting it to.

THE FUTURE OF FUKUSHIMA CHAPTER 23 NUCLEAR POWER Can nuclear energy overcome its bad rep?

English Presentation Text Nine “Researchers Assess Radioactivity Released to the Ocean from the Fukushima Dai-Ichi Nuclear Power Facility” Member of group.

Assement of radionuclide concentration in various samples by gamma spectrometry and LSC J. Berzins, D.Riekstina, O. Veveris Institute of Solid State Physics.

The political aspects of monitoring radioactive materials in the environment of our region E. Wirth, M Zähringer Federal Office for Radiation Protection,

Radiation in Your Environment. Radiation Around You Nature –Cosmic (direct and cosmic-produced radioactivity –Terrestrial (including radon) Medical Consumer.

Chapter 4 Nuclear Energy. Objectives Describe how nuclear fuel is produced. List the environmental concerns associated with nuclear power. Analyze the.

Safety of Alaska’s food sources Kristin Ryan Program Director Alaska Department of Environmental Conservation Division of Environmental Health Anchorage,

AMAP - An international cooperation in far northern conditions Yuri Tsaturov - Roshydromet & Morten Sickel – Norwegian Radiation Protection.

Applications of Exponential Functions. Radioactive Decay Radioactive Decay The amount A of radioactive material present at time t is given by Where A.

236 U Stephan Winkler (Univ. of Vienna). Production of 236 U (n,3n) Main Production channel in thermonuclear devices is (n,3n) of 14MeV neutrons on 238.

 Introduction to Isotopes Nuclear Chemistry, Unit 4.

From Chernobyl to Fukushima: introduction Conveners of GI1.4 session M. Yamauchi (Swedish Institute of Space Physics, Sweden) Oleg Voitsekhovych (Ukrainian.

Are you prepared?... start 2:27.

IAEA Sources of Radiation Fuel Cycle - Reprocessing Day 4 – Lecture 8 (2) 1.

1. Progress in Understanding a. Monitoring of sea measurement methods and results Readings of Sea Area Monitoring by Japan 3, Oct., 2011 Masanao NAKANO.

Re-suspension of the radioactive fallout after the Fukushima accident: Risk of internal dose during the first week and the first two months M. Yamauchi,

1. Progress in Understanding c. Calculations of Ocean Circulation Japanese Simulations of Radioactivity Concentrations in the Sea Area 3, Oct., 2011 Masanao.

Case study: 137 Cs as tracer for sedimentation processes in an Italian coastal area Roberta Delfanti, ENEA - La Spezia, Italy IAEA Regional Training Course.

Sediment trap data. Constraining the seasonal particle flux in the eastern North Atlantic with Thorium isotopes M. Roy-Barman (1), R. El Hayek (1), I.

1 Chapter 9 Nuclear Radiation 9.1 Natural Radioactivity Copyright © 2009 by Pearson Education, Inc.

Kaijun Su a, Jinzhou Du a, *, Mark Baskaran b and Jing Zhang a State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai.

Isotope Technologies Garching GmbHCERN 2010 Radiation Protection Aspects Related to Lutetium-177 Use in Hospitals R. Henkelmann, A. Hey, O. Buck, K. Zhernosekov,

Ocean Chemistry Unit 5. Colligative Properties of Seawater   Heat Capacity – –heat required to raise 1 g of substance 1°C – –Heat capacity of water.

Fukushima Power Plant – Japan Post March 11, 2011

HELCOM MORS-PRO Radioactivity in the Baltic Sea Erkki Ilus STUK - Radiation and Nuclear Safety Authority, Finland.

Nuclear Reaction Questions 1.In 1909, what did Ernest Rutherford aim to discover? 2.Describe the equipment set-up he used to carry out his experiment.

GEMS: UNDERWATER SPECTROMETER FOR LONG-TERM RADIOACTIVITY MEASUREMENTS

J.M. Abril Department of Applied Physics (I); University of Seville (Spain) IAEA Regional Training Course on Sediment Core Dating Techniques. RAF7/008.

Chernobyl Disaster Worst Nuclear accident in 20 th century IMPACTS AND LESSONS [ID4115: Bioremediation of Soil and Water Resources, Fall 2013] Sandipan.

Radiological Assessment - of effects from - Fukushima Daiichi Nuclear Power Plant April 18, 2011.

Nuclear and radiological incidents – Introduction

Specialized English Environmental Health Mahdi Jahangir-Blourchian Mahdi Jahangir-Blourchian The School of Health Guilan University of Medical Sciences.

Fukushima Ocean Impact Symposium How do we consider the Fukushima Accident from the Perspective on Ocean Policy November 13 th, 2012 Sanjo Kaikan, The.

Fukushima derived radionuclides in the ocean Ken Buesseler Woods Hole Oceanographic Institution, USA Michio Aoyama Meteorological Research Institute, Japan.

Radionuclides in the ocean Ken Buesseler Department of Marine Chemistry and Geochemistry Woods Hole Oceanographic Institution Woods Hole, Massachusetts,

Philippines Country Report RAS/7/ July 2007 Philippines: Country Presentation Teofilo Y. Garcia Health Physics Research Section Philippine Nuclear.

Integrated Science C Mrs. Brostrom. Describe the availability, current uses and environmental issues related to the use of fossil and nuclear fuels to.

Photo: T. Ishimaru Nov. 13, 2012 Sanjo Conference Hall, University of Tokyo Long-term Sources: To what extent are marine sediments, coastal groundwater,

Nuclear emergency Japan Some resources excerpted, Nuclear Energy Institute, Wikipedia, etc.

What do you know of Japan’s Nuclear crisis? How about any past nuclear issues? Do you feel that nuclear power is safe? Why or why not? Question of the.

Fukushima: the continuing crisis Dr Ian Fairlie Consultant on Radiation in the Environment London, United Kingdom

What nuclides made that electromagnetic radiation?

Comparison of MCNP and ERICA results in two different marine areas

Eiliv Steinnes Department of Chemistry

RADINUCLIDES IN THE OCEANS:

Cloud conditions for low atmospheric electricity during disturbed period after the Fukushima nuclear accident Akiyo Yatagai1, M. Yamauchi2, M. Ishihara3.

CN−２４２ 03b–12/ID52 Exposure Scenario and Pathway

Risk Assessment Fukushima

SAFETY AND SITTING ASSESSMENT FOR NPPs DEPLOYMENT IN INDONESIA

Mark J. Costello, Chhaya Chaudhary Current Biology

Radionuclides in the Baltic Sea Radiation Safety Department

The “Green Run”.

15.Oct Masanao NAKANO Japan Atomic Energy Agency

Radionuclide transport modelling

Presentation transcript:

Standpoint of the French Institute for Radioprotection and Nuclear Safety (IRSN) on the impact of radioactive releases from the Fukushima-Daiichi nuclear accident on the marine environment Bruxelles, EU meeting, 03 Oct 2011 ( Paper sumitted to JER “Estimation of marine source-term following Fukushima Dai-ichi accident” by Bailly du Bois et al.

Bruxelles, EU meeting, 16 May /4 IRSN estimation of the source-term of releases into seawater 137 Cs quantities were estimated on the basis of sample measurements in a 50 x 100 km area around the plant (issues: depth, mixing layer, atmospheric fallout, rain water washout, …) Exponential decay back extrapolated to April 8 -> 22E+15 Bq (depth of mixing layer ?) Total until July 18 -> 27E+15 Bq

Bruxelles, EU meeting, 16 May /4 IRSN estimation of the rate of seawater renewal Exponential decay t 1/2 = 6.9 d Dilution by clean water through marine currents (remarkably constant) Convergence of Kuroshio and Oyashio  Seasonal changes in the ocean circulation ?  Return of contaminated water back in the area ? If no more releases occur and dilution remains constant, back to prior situation is expected in Nov 2011

Bruxelles, EU meeting, 16 May 2011 IRSN/Ifremer dispersion modelling (based on IRSN estimated source-term) Short distance matching calculations/measurements less than 1 km off the facility

Bruxelles, EU meeting, 16 May 2011 IRSN/Ifremer dispersion modeling (based on IRSN estimated source-term) Mid distance (color-scale changed by a factor 10) Long distance dispersion is not yet validated by measurements as of July 1 st, calculated values are below actual DL (5 Bq.L -1, but DLs below Bq.L -1 are routinely achieved in radioecology)

Bruxelles, EU meeting, 16 May /4 Inventory of main 137 Cs releases in the oceans SourcePBq (1E+15Bq) Fallout from nuclear weapon tests704* Nuclear fuel reprocessing BNFL Sellafield41.21 Areva-NC La Hague1.04 Tchernobyl accident16* Solid waste dumping41.4 (beta + gamma) Fukushima accident Direct liquid release27 Atmospheric fallout0.076 (80 km radius circle) * Aarkrog, Input of anthropogenic radionuclides into the World Ocean. Deep Sea Research Part II: Topical Studies in Oceanography Volume 50, Issues 17-21, Pages

Bruxelles, EU meeting, 16 May 2011 Measurements in sediments average [ 137 Cs] until Aug 30 Cs, I, Te, Sr, Pu, Ba The map is a draft document with over- estimated values along the shore (this biais will be fixed) As regards Kd’s, amounts of 137 Cs in sediments are relatively low 137 Cs seems to increase with time (kinetics of transfer to particles and deposition) but is expected to level off in the forthcoming months. Because of remobilisation processes, sediments will behave as a secondary sources of contamination (postponed, remote and diffuse)

Bruxelles, EU meeting, 16 May 2011 FURTHER WORK PLANNED BY IRSN WITH COLLABORATIONS to compare the results of dispersion modeling by IRSN/Ifremer, Sirocco and Japan Atomic Energy Agency to estimate the transfers of radionuclides from seawater to biota by modeling in collaboration with Collecte Localisation Satellite (CLS)  radionuclides bioaccumulation in the different marine trophic levels will be dynamically predicted on the basis of dispersion modeling outcomes  maps of radioactive quality index to support monitoring survey for commercial fish species fish survey in the Pacific (IRSN and IFREMER) post-doc IRSN fellowship 8/4