COMPOSITION OF CONTAMINATION LAYERS AND EFFICIENCY OF THE DECONTAMINATION - FINAL REPORT
Investigations of the activity distribution in the basic materials of tube samples (activity depth profile) were carried through on three tube samples from the primary vapour, primary condensate and primary water area of the nuclear power station Lingen. Radioactivity (leading isotope 60-Co) could be proved in all tube samples. The courses of the activity depth profiles of the tube samples differed widely. The following course of procedure was established as the result of the investigation on a complete decontamination: + Removal of the oxidic layers via the LOMI process. + Removal of a certain thickness of material layer from the oxide free surface of the basic material with the aid of a much diluted acid mixture made from nitric acid and hydrochloric acid.
Bibliographic Reference: EUR 9352 DE (1984) FS, 79 P., BFR 300, EUROFFICE, LUXEMBOURG, POB 1003
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Record Number: 1989123083300 / Last updated on: 1987-01-01
Available languages: de