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The objective of this research project was to determine radioactivity levels for the unharmful reuse of concrete debris resulting from the dismantling of nuclear installations. Experimental studies were carried out on six different test specimen concerning the wash-out of the dominant nuclides which cause contamination in nuclear power plants (Co 60 and Cs 137). From these studies the transfer factory for the specific activity from concrete into water has been determined. In a study based on scientific sources the possibilities of recycling and utilizing concrete debris were determined. The potential radiation exposure by ingestion caused by various uses of recycled concrete was determined based on the scientific sources and on the transfer obtained from experimentation.
Radiation exposure during the processing and handling of concrete debris was determined using suitable conservative scenarios deduced from the scientific sources. In comparison radiation exposure caused by natural radioactivity levels in concrete was determined based on the same scenarios. The natural radioactivity of concrete was ascertained by own measurements and compared with values given in scientific sources.
Based on the 10 mSv concept, the results of the calculations for radiation exposure have been translated into permissible limits, which define the maximum admissible specific radioactivity.

Additional information

Authors: RAUH H-J, TÜV Bayern Sachen, München (DE);RAUM D, TÜV Bayern Sachen, München (DE);SCHMID, TÜV Bayern Sachen, München (DE);F J, TÜV Bayern Sachen, München (DE);OHLMANN U, RWE Energie AG (DE)
Bibliographic Reference: EUR 16703 DE (1995) 197pp., FS, ECU 20
Availability: Available from the (2)
ISBN: ISBN 92-827-5640-8
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