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Fluxes of radionuclides in the agricultural production after a nuclear accident: countermeasures and decontamination techniques; Flux des radionucleides dans les productions agricoles suite a un accident nucleaire: contre-mesures et techniques de rehabilitation

Abstract

This thesis deals with the radiological consequences of a nuclear accident through the radioactive contamination of the food chain and the subsequent countermeasures for decreasing the fluxes of radionuclides and decontaminating agricultural lands. After a brief summary of the radioprotection ground and context in case of a nuclear accident, this work surveys existing data on the fluxes of radionuclides in soils and from soil to plants. The research work focuses on both the prediction of the fluxes of radionuclides and possible countermeasures: the measurement of the bioavailability of radionuclides in the soil solution, its use in a mathematical expression to quantify the soil-to-plant transfer of caesium and strontium, and the perspectives of an innovative technique of soil decontamination. The obtained results show that based on 4 coefficients, it is possible to predict crop contamination within a 3 % confidence interval: the fluid solid distribution coefficient of radionuclides kd, the amount of chemical analogues of caesium and strontium, i.e. potassium and calcium, respectively, soil pH and a constant characterising the plant species that is concerned. However, it generally appears from soil to plant transfer studies that the reduction of the fluxes of radionuclides is not a promising way of radiological exposure  More>>
Authors:
Jouve, A [1] 
  1. CEA Centre d`Etudes Nucleaires de Cadarache, 13 -Saint-Paul-lez-Durance (France)
Publication Date:
Dec 31, 1997
Product Type:
Technical Report
Report Number:
CEA-R-5742
Reference Number:
SCA: 540230; 553004; PA: AIX-29:045495; EDB-98:089652; SN: 98001997330
Resource Relation:
Other Information: PBD: 1997
Subject:
54 ENVIRONMENTAL SCIENCES; 55 BIOLOGY AND MEDICINE, BASIC STUDIES; ACCIDENTS; CESIUM; CONTAMINATION; CROPS; DECONTAMINATION; FOOD; PEAT; RADIATION PROTECTION; RADIOISOTOPES; RADIONUCLIDE MIGRATION; REMEDIAL ACTION; SOILS; STRONTIUM; SWAMPS
OSTI ID:
636743
Research Organizations:
CEA Centre d`Etudes Nucleaires de Cadarache, 13 - Saint-Paul-lez-Durance (France)
Country of Origin:
France
Language:
French;English
Other Identifying Numbers:
Other: ON: DE98633121; TRN: FR9704991045495
Availability:
INIS; OSTI as DE98633121
Submitting Site:
FRN
Size:
135 p.
Announcement Date:
Sep 11, 1998

Citation Formats

Jouve, A. Fluxes of radionuclides in the agricultural production after a nuclear accident: countermeasures and decontamination techniques; Flux des radionucleides dans les productions agricoles suite a un accident nucleaire: contre-mesures et techniques de rehabilitation. France: N. p., 1997. Web.
Jouve, A. Fluxes of radionuclides in the agricultural production after a nuclear accident: countermeasures and decontamination techniques; Flux des radionucleides dans les productions agricoles suite a un accident nucleaire: contre-mesures et techniques de rehabilitation. France.
Jouve, A. 1997. "Fluxes of radionuclides in the agricultural production after a nuclear accident: countermeasures and decontamination techniques; Flux des radionucleides dans les productions agricoles suite a un accident nucleaire: contre-mesures et techniques de rehabilitation." France.
@misc{etde_636743,
title = {Fluxes of radionuclides in the agricultural production after a nuclear accident: countermeasures and decontamination techniques; Flux des radionucleides dans les productions agricoles suite a un accident nucleaire: contre-mesures et techniques de rehabilitation}
author = {Jouve, A}
abstractNote = {This thesis deals with the radiological consequences of a nuclear accident through the radioactive contamination of the food chain and the subsequent countermeasures for decreasing the fluxes of radionuclides and decontaminating agricultural lands. After a brief summary of the radioprotection ground and context in case of a nuclear accident, this work surveys existing data on the fluxes of radionuclides in soils and from soil to plants. The research work focuses on both the prediction of the fluxes of radionuclides and possible countermeasures: the measurement of the bioavailability of radionuclides in the soil solution, its use in a mathematical expression to quantify the soil-to-plant transfer of caesium and strontium, and the perspectives of an innovative technique of soil decontamination. The obtained results show that based on 4 coefficients, it is possible to predict crop contamination within a 3 % confidence interval: the fluid solid distribution coefficient of radionuclides kd, the amount of chemical analogues of caesium and strontium, i.e. potassium and calcium, respectively, soil pH and a constant characterising the plant species that is concerned. However, it generally appears from soil to plant transfer studies that the reduction of the fluxes of radionuclides is not a promising way of radiological exposure mitigation after a nuclear accident. The work performed shows that it is more efficient to tackle the source of the contamination, i.e. decontaminate the soil. The proposed technique of soil scraping using a turf harvester appears to be the most advantageous among the tested options, for the decontamination of peat-bog meadows. (author).}
place = {France}
year = {1997}
month = {Dec}
}