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Abstract

The present report discusses the significance for environmental exposure of the iodine released with the gaseous effluents of nuclear power stations and reprocessing plants in relation to releases of other airborne radionuclides. Iodine filtration processes are described. The release pathways and the composition of airborne fission product iodine mixtures and their bearing on environmental exposure are discussed on the basis of measured fission product iodine emissions. The sorbents which can be used for iodine filtration, their removal efficiencies and range of applications are dealt with in detail. The particular conditions governing iodine removal, which are determined by the various gaseous iodine species, are illustrated on the basis of experimentally determined retention profiles. Particular attention is given to the limitations imposed by temperature, humidity, radiation and filter poisoning. The types of filter normally used are described, their advantages and drawbacks discussed, the principles underlying their design are outlined and the sources of error indicated. The latest developments in filter technology in reprocessing plants are briefly outlined.

Additional information

Authors: WILHELM J G KERNFORSCHUNGSZENTRUM KARLSRUHE (GERMANY), KERNFORSCHUNGSZENTRUM KARLSRUHE (GERMANY)
Bibliographic Reference: WRITE TO CEC DIRECTORATE-GENERAL EMPLOYMENT, SOCIAL AFFAIRS AND EDUCATION, HEALTH AND SAFETY DIRECTORATE, JEAN MONNET BUILDING, LUXEMBOURG (GRAND- DUCHY) MENTIONING REPORT V/2110/83 EN, FREE OF CHARGE
Record Number: 1989122038800 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en
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