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Resuspension of fission products from the boiling sump in the container has long been known as a source of airborne radioactivity. Since this source is very weak, however, not much attention had been paid to it as long as radiological source terms were governed by stronger sources. Recently, the continuous reduction of source terms and the introduction of accident management measures led to a situation where weak but long-lasting sources of radioactivity may become important, either as a contribution to the radiological source term or as an impact to accident filtration systems. The objectives of the experimental research programme REST (REsuspension Source Term) were to measure resuspension source characteristics under simulated accident conditions such that an application of the data in fission product transport and depletion models is possible. In this report the organisation of the programme is described, together with the experimental facility and methods used, and the work carried out is detailed. The results of this work are presented and their use in the calculation of accident source terms is discussed.

Additional information

Authors: BUNZ H ET AL., Forschungszentrum Karlsruhe GmbH (DE)
Bibliographic Reference: EUR 14635 EN (1993) 100 pp., FS, ECU 10.50
Availability: (2)
ISBN: ISBN 92-826-5108-8
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