The IRSN (Institut de Radioprotection et de Sûreté Nucléaire, France) has started an in situ study of the behaviour of atmospheric releases close-by the COGEMA La Hague nuclear reprocessing plant. The study is designed to improve information on the dispersion of radioactive pollutants very close to the emission point--a 100 m height chimney. In this situation, close to the emission and height of the emission, Gaussian models generally used to predict the behaviour of atmospheric releases are not well adapted. The study is based on the characterisation of the 85Kr emitted during normal operations of the reprocessing process. Temporal and spatial variations of the plume shape were investigated with intensive in situ measurements. Live in situ techniques to measure the electrons and the photons emitted by the 85Kr have been implemented and will be described. Preliminary results showing the interest of the techniques were presented. Variations of the dose rates created by the photon flux of a plume were directly measured and correlated to other quantities.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/S0265-931X(03)00195-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Radiocarbon behaviour in seawater and the brown algae Fucus serratus in the vicinity of the COGEMA La Hague spent fuel reprocessing plant (Goury)--France.
J Environ Radioact
January 2005
IRSN/DEI/SECRE/LRC, BP 10-50130 Cherbourg Octeville, France.
Extensive studies of the radiocarbon (14C) distribution and transfer in the marine environment of the North-Cotentin peninsula and along the English Channel have been carried out. The main aims of these studies have been to estimate the spatial and temporal variation of the 14C concentration in seawater and to calculate 14C concentration factors for some biological species. Such information will be helpful in order to calculate precisely radiation doses to humans.
View Article and Find Full Text PDFIn situ metrology of 85Kr plumes released by the COGEMA La Hague nuclear reprocessing plant.
J Environ Radioact
June 2004
Département de Protection de l'Environnement, Institut de Radioprotection et de Sûreté Nucléaire, Service d'études et Recherches Radioécologiques dans les Milieux Naturels, LMRE Bât 501, Bois des Rames, 91400 Orsay Cedex, France.
The IRSN (Institut de Radioprotection et de Sûreté Nucléaire, France) has started an in situ study of the behaviour of atmospheric releases close-by the COGEMA La Hague nuclear reprocessing plant. The study is designed to improve information on the dispersion of radioactive pollutants very close to the emission point--a 100 m height chimney. In this situation, close to the emission and height of the emission, Gaussian models generally used to predict the behaviour of atmospheric releases are not well adapted.
View Article and Find Full Text PDF[Causes of death of COGEMA active workers, 1980-1995].
Rev Epidemiol Sante Publique
October 2003
Laboratoire d'Epidémiologie, IRSN, BP 17, 92262 Fontenay-aux-Roses.
Background: Populations exposed to risks at work show a deficit in deaths in comparison with the national population, the "healthy worker effect". This effect has been observed among former nuclear workers. The aim of our cross-sectional study was to evaluate the mortality in a metallurgy worker population, and to study the impact of the choice of the reference population on the estimation of the Standardized Mortality Ratio (SMR).
View Article and Find Full Text PDFAccumulation of COGEMA-La Hague-derived reprocessing wastes in French salt marsh sediments.
Environ Sci Technol
December 2002
School of Chemistry, Physics and Environmental Science, University of Sussex, Brighton, BNI 9QJ, UK.
Over the past five decades, authorized low-level discharges from coastal nuclear facilities have released significant quantities of artificial radionuclides into the marine environment. In northwest Europe, the majority of the total discharge has derived from nuclear reprocessing activities at Sellafield in the United Kingdom and COGEMA-La Hague in France. At the Sellafield site, a significant amount of the discharges has been trapped in offshore fine sediment deposits, and notably in local coastal and estuarine sediments, and much research has been focused on understanding the distribution, accumulation, and reworking of long-lived radionuclides in these deposits.
View Article and Find Full Text PDFRadiotoxicological intercomparisons organised by the Commissariat à l'Energie Atomique group in France.
Sci Total Environ
March 1993
Compagnie Genérale des Matières Nucléaires (COGEMA) La Hague, Cherbourg, France.
People working in French nuclear plants are monitored either by whole body counting or by the measurement of biological samples. The radiochemical and radiometric procedures used have to be periodically reviewed. A working group, including practising biologists from CEA, EDF and the Armed Forces Health Service, instituted comparisons of radiotoxicological test assessments.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!