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Reference methodologies for radioactive controlled discharges an activity within the IAEA’s program environmental modelling for radiation safety II (EMRAS II)

Published online by Cambridge University Press:  09 January 2012

T.J. Stocki
Affiliation:
Radiation Protection Bureau, Health Canada, 2720 Riverside Dr., AL6604C, Ottawa, Canada, K1A 0K9
D.M. Telleria
Affiliation:
International, Atomic Energy Agency, Vienna, Austria
L. Bergman
Affiliation:
Radiation Protection Bureau, Health Canada, 2720 Riverside Dr., AL6604C, Ottawa, Canada, K1A 0K9
G. Proehl
Affiliation:
International, Atomic Energy Agency, Vienna, Austria
V. Amado
Affiliation:
Autoridad Regulatoria Nuclear, Buenos Aires, Argentina
I. Bonchuk
Affiliation:
Ukrainian Radiation Protection Institute, Kyiv, Ukraine
P. Boyer
Affiliation:
Institut de Radioprotection et de Sûreté Nucléaire, Saint Paul-Lez-Durance, France
P. Chyly
Affiliation:
Slovak Electricity, Mochovce, Slovak Republic
A. Curti
Affiliation:
Autoridad Regulatoria Nuclear, Buenos Aires, Argentina
R. Heling
Affiliation:
Nuclear Research & Consultancy Group, Es Arnhem, The Netherlands
V. Kliaus
Affiliation:
Republican Scientific Practical Centre of Hygiene, Minsk, Belarus
P. Krajewski
Affiliation:
Central Laboratory for Radiological Protection, Warsaw, Poland
G. Latouche
Affiliation:
Canadian Nuclear Safety Commission, Ottawa, Canada
D.C. Lauria
Affiliation:
Instituto de Radioproteçao e Dosimetria, Rio de Janeiro, Brazil
C. Mourlon
Affiliation:
Institut de Radioprotection et de Sûreté Nucléaire, Saint Paul-Lez-Durance, France
L. Newsome
Affiliation:
The Environment Agency, Warrington, UK
L. Sági
Affiliation:
KFKI Atomic Energy, Budapest, Hungary
J. Smith
Affiliation:
Health Protection Agency, Chilton, UK
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Abstract

In January 2009, the IAEA EMRAS II (Environmental Modelling for Radiation Safety II) program was launched. The goal of the program is to develop, compare and test models for the assessment of radiological impacts to the public and the environment due to radionuclides being released or already existing in the environment; to help countries build and harmonize their capabilities; and to model the movement of radionuclides in the environment. Within EMRAS II, nine working groups are active; this paper will focus on the activities of Working Group 1: Reference Methodologies for Controlling Discharges of Routine Releases. Within this working group environmental transfer and dose assessment models are tested under different scenarios by participating countries and the results compared. This process allows each participating country to identify characteristics of their models that need to be refined. The goal of this working group is to identify reference methodologies for the assessment of exposures to the public due to routine discharges of radionuclides to the terrestrial and aquatic environments. Several different models are being applied to estimate the transfer of radionuclides in the environment for various scenarios. The first phase of the project involves a scenario of nuclear power reactor with a coastal location which routinely (continuously) discharges 60Co, 85Kr, 131I, and 137Cs to the atmosphere and 60Co, 137Cs, and 90Sr to the marine environment. In this scenario many of the parameters and characteristics of the representative group were given to the modellers and cannot be altered. Various models have been used by the different participants in this inter-comparison (PC-CREAM, CROM, IMPACT, CLRP POSEIDON, SYMBIOSE and others). This first scenario is to enable a comparison of the radionuclide transport and dose modelling. These scenarios will facilitate the development of reference methodologies for controlled discharges.

Type
Research Article
Copyright
© Owned by the authors, published by EDP Sciences, 2011

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References

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