Application of Different Nuclides in Retrospective Dosimetry


Application of Different Nuclides in Retrospective Dosimetry

Konheiser, J.; Mittag, S.; Viehrig, H.-W.

Activities of nuclides produced by 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. Compared to former results, up to 20% higher fluences have been computed, leading to somewhat better agreement of measurement and calculation, particularly in case of Tc-99.

Keywords: fluence calculations; Nonte-Carlo program; retrospective dosimetry; Niobium; Nickel; Technetium

  • Journal of ASTM International 9(2012)3

Permalink: https://www.hzdr.de/publications/Publ-16639
Publ.-Id: 16639