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Master's Dissertation
DOI
10.11606/D.85.2017.tde-12122016-122949
Document
Author
Full name
Josenilson Barbosa de Lima
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2016
Supervisor
Committee
Potiens Junior, Ademar José (President)
Dellamano, José Claudio
Macacini, José Flávio
Title in Portuguese
Desenvolvimento de uma metodologia para a caracterização de tambores de rejeitos radioativos
Keywords in Portuguese
caracterização
espectrometria gama
gerência de rejeitos
método de Monte Carlo
rejeitos radioativos
Abstract in Portuguese
Rejeitos radioativos são gerados em todas as etapas do ciclo do combustível nuclear e em instituições que fazem uso de elementos radioativos. No Brasil, para que possam atender a legislação vigente, eles devem ser devidamente gerenciados e tratados. A caracterização é a etapa do gerenciamento de rejeitos radioativos que certifica e complementa as informações presentes no documento de identificação fornecido pelo gerador dos rejeitos radioativos. O objetivo desse trabalho foi desenvolver uma metodologia para caracterização de tambores de rejeitos radioativos. Neste trabalho foi utilizada a técnica de espectrometria gama associada ao método de Monte Carlo para obter e estabelecer uma relação entre as eficiências de contagens teóricas e experimentais para quatro tambores de calibração com densidades diferentes, preparados com nove tubos de PVC em seu interior. O detector de HPGe utilizado foi posicionado em três diferentes distâncias em relação a extremidade do tambor de calibração. A utilização do método de Monte Carlo mostrou-se adequado a metodologia proposta neste trabalho.
Title in English
Development of a methodology for characterization of radioactive waste drums
Keywords in English
characterization
gamma spectrometry technique
Monte Carlo method
radioactive waste
Abstract in English
Radioactive wastes are generated at all stages of the nuclear fuel cycle and institutions that make use of radioactive elements. In Brazil, so that they can meet the current legislation, they must be properly managed and treated. The characterization is the stage of radioactive waste management that certifies and complements the information in the identification document provided by the radioactive waste generator. The aim of this study was to develop a methodology for characterization of radioactive waste drums. In this work we used the gamma spectrometry technique associated with the Monte Carlo method to obtain and establish a relationship between the efficiencies of theoretical and experimental scores for four calibration drums with different densities prepared with nine PVC tubes inside. The HPGe detector used was positioned at three different distances from the end of the calibration drum. Using the Monte Carlo method was appropriate to the methodology proposed in this work.
 
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Publishing Date
2017-03-08
 
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