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Wykorzystanie instrumentalnej neutronowej analizy aktywacyjnej w badaniu proweniencji rzeźby alabastrowej "Madonna Jackowa" z XIV wieku

Pańczyk E., Rowińska L., Nalepa B., Waliś L.

Analityka : nauka i praktyka

2006

nr 1

30-32

Evaluation of the activity of irradiated graphite in the Ignalina Nuclear Power Plant RBMK-1500 reactor

Ancius D., Ridikas D., Remeikis V., Plukis A., Plukiene R., Cometto M.

Nukleonika

2005

Vol. 50, nr 3

113-120

Ignalina NPP Unit 1 with the RBMK-1500 type reactor enters the preparatory stage for its decommissioning. A big volume of graphite has to be dismantled and managed. This paper evaluates the composition of radionuclides in irradiated graphite on the basis of the calculation scheme with computer codes MCNPX and CINDER'90. Full scale calculations take into account the whole energy spectrum of neutrons, the spatial neutron flux in different reactor structures and the impurities of RBMK-1500 graphite measured by two independent methods. Principal contributors to the total activity as well as other radionuclides important from the radiological point of view are identified. The uncertainties of such calculations are discussed.