NT & RP Journal
DECOMMISSIONING OF THE ASTRA RESEARCH REACTOR - DISMANTLING OF THE BIOLOGICAL SHIELD
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Vol. XXI, No. 2, Pp. 1-101
December 2006
UDC 621.039+614.876:504.06
YU ISSN 1451-3994

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Pages:
79 - 91

Authors:
Franz MEYER, Ferdinand STEGER

Abstract


The paper describes the dismantling of the inactive and activated areas of the biological shield of the ASTRA research reactor at the Austrian Research Center in Seibersdorf. The calculation of the parameters determining the activated areas at the shield (reference nuclide, nuclide vector in the barite concrete and horizontal and vertical reduction behaviors of activity concentration) and the activation profiles within the biological shield for unrestricted release, release restricted to permanent deposit and radioactive waste are presented. Considerations of located activation anomalies in the shield, e. g. in the vicinities of the beam-tubes, were made according to the reactor's operational history. Finally, an overview of the materials removed from the biological shield is given.
Key words: decommissioning, ASTRA research reactor, dismantling, biological shield
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Vinča Institute of Nuclear Sciences :: Designed by milas :: July 2007
Last updated on September, 2010