LETICIA KATHELEEN BUENO
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Artigo IPEN-doc 27239 Implementation of an installation for the new activimeter calibration methodology2020 - MARTINS, E.W.; BUENO, L.K.; POTIENS, M.P.A.Considering the frequent development of research projects and the services provided by the Instrument Calibration Laboratory (LCI), to implement the calibration of activity measuring instruments, it was necessary to build a new dedicated laboratory for this purpose. After the layout project carried out, the physical installations were started, following the radiological protection service plans according to the National Nuclear Energy Commission rules . In order to ensure greater reliability in the measurements and to facilitate the transport of radioactive sources, a new methodology of in situ calibration and quality control of activimeters was developed. This paper presents the implementations made in the new LCI installation for the implementation of the new activitymeter calibration methodology operationalization.Artigo IPEN-doc 26203 Behavior analysis of the activity meter in standard fields2019 - BUENO, LETICIA K.; MARTINS, ELAINE W.; ABOLAFIO, ADILSON; POTIENS, MARIA da P.A.The measurements good practices consists in the periodic control of the results obtained by the instruments, the main objective of the quality control in the activity meter is to guarantee that its response is being constant over time and, the results are trustable in relation to the references. The objective of this study was to perform a comparison of the behavior of 12 activity meters that are located inside of the IPEN’s Radiopharmacy Center. These equipment were submitted to periodic tests using the reference sources of 57Co, 133Ba and 137Cs. To evaluate their behavior the accuracy and precision tests were applied individually to the well-type ionization chamber. Based on the survey accomplished, we can verify through the failures presented on the accuracy performance that the activity meters are instruments that need a periodic verification, requesting adjusts and recalibration.