ISSN: 1546-962X
CODEN: JAIOAD
Published Online: 1 March 2012
Page Count: 7

Application of Different Nuclides in Retrospective Dosimetry

Konheiser, J.
Helmholtz-Zentrum Dresden-Rossendorf e.V. (HZDR), Dresden,

Mittag, S.
Helmholtz-Zentrum Dresden-Rossendorf e.V. (HZDR), Dresden,

Viehrig, H. -W.
Helmholtz-Zentrum Dresden-Rossendorf e.V. (HZDR), Dresden,

Gleisberg, B.
Verein für Kernverfahrenstechnik und Analytik Rossendorf e.V. (VKTA), Dresden,

(Received 20 April 2011; accepted 20 November 2011)

Abstract

The activities of nuclides produced via the neutron irradiation of reactor pressure vessel (RPV) steel are used to validate respective fluence calculations. Niobium, nickel, and technetium isotopes from RPV trepans of the decommissioned NPP Greifswald (VVER-440) have been analyzed. The activities were determined by TRAMO (Monte-Carlo) fluence calculations, newly applying 640 neutron-energy groups and ENDF/B7 data. Relative to earlier results, fluences up to 20 % higher have been computed, leading to somewhat better agreement between measurement and calculation, particularly in the case of Tc-99.

Keywords:
fluence calculations, Monte-Carlo calculation, retrospective dosimetry, Niobium, Nickel, Technetium

Paper ID: JAI103925
DOI: 10.1520/JAI103925
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