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The decommissioning of nuclear installations requires efficient decontamination methods which are simple to apply and which produce a small amount of easily processable waste. With this in mind, three decontamination methods, particularly well-suited to decommissioning, were studied. These were: - spraying of gels carrying chemical decontaminating agents; - electropolishing with a swab device, and - abrasive blasting. After parametric tests on non-radioactive and active samples, the industrial application of these methods in the dismantling of installations was studied. This included: - decontamination of pieces from the German BWR ISAR by immersion and gel spraying; - decontamination, mainly by gel spraying, and dismantling of the Brennilis bituminisation plant; - decontamination of part of the cooling circuit of the graphite gas reactor G2 by gel spraying, and - decontamination of a component of the FBR SuperPhenix, using dry abrasive blasting.

Additional information

Authors: BRUNEL G, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);GAUCHON J-P, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);KERVEGANT Y, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);JOSSO F, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: EUR 13497 FR (1991) 92 pp., FS, ECU 8.75
Availability: (2)
ISBN: ISBN 92-826-2558-3
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