Gamma ray spectroscopy studies on low and intermediate level radioactive waste from Angra-1 nuclear power plant
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2018
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BRAZILIAN MEETING ON NUCLEAR PHYSICS, 41th
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The determination of the radionuclide composition of low - and intermediate - level radioactive waste is of
paramount importance for the design and implementation of Brazil`s planned radioactive waste repository.
While there is some knowledge of the radionuclides expected to be present, the exact activity values in each of
the waste bins are not determined with su±cient precision, so theres an ongoing e®ort to analyze the composition
of this waste and make the radioactive inventory of the bins containt, which comprises several institutions and
laboratories. In the present work the gamma - ray spectroscopy of samples of resin, ¯lters and evaporator
concentrate from Angra 1 nuclear power plant have been studied. Small aliquots (» 500 mg) of the distinct
samples were stored in glass vials and gamma- counted in a characterized high resolution germanium detector.
In order to determine the best counting time, these aliquots were counted for 24h (real - time), with the
spectroscopy results saved after each full hour of counting. The resulting twenty four spectra were then analyzed
with Canberras Genie - 2000 software, using ISOCS e±ciency correction tool. The results for each sample were
then compared to determine the required counting time for each of the radioisotopes of interest.
Como referenciar
SILVA, PAULO S.C. da; ZAHN, GUILHERME S.; CARVALHO, RICARDO N. de; GENEZINI, FREDERICO A. Gamma ray spectroscopy studies on low and intermediate level radioactive waste from Angra-1 nuclear power plant. In: BRAZILIAN MEETING ON NUCLEAR PHYSICS, 41th, September 2-6, 2018, Maresias, SP. Abstract... São Paulo: Sociedade Brasileira de Física, 2018. p. 1-1. Disponível em: http://repositorio.ipen.br/handle/123456789/30114. Acesso em: 24 Apr 2024.
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