SANDRA REGINA DAMATTO

SANDRA REGINA DAMATTO

Página do item completo

Resultados de Busca

Agora exibindo 1 - 10 de 11

An overview of the gaseous radioactive effluents control and radioactivity assessment in the atmospheric air at IPEN’S campus
2017 - RODRIGUES, C.E.C.; NOGUEIRA, P.R.; DAMATTO, S.R.; MADUAR, M.F.; ALENCAR, M.M.; PECEQUILO, B.R.S.
The routine operation of a nuclear or radioactive installation generally involves the release of radioactive liquid and/or gaseous effluents. At the Nuclear and Energy Research Institute – IPEN there are several nuclear and radioactive facilities, developing activities in the field of nuclear energy. IPEN’s Radioprotection Management has established a radioactive effluent sampling program to determine the amount of radioactive material (source term) released into the environment and to detect immediately any unplanned release above the pre-established operating limits. The IPEN Environmental Radiological Monitoring Program – ERMP evaluates the levels of radioactivity to which individuals of the public are exposed through the analysis of atmospheric samples; the main objective of an ERMP is the confirmatory radiological control, which estimates whether the assumptions made in the calculation of the dose, from the source term, are correct. The objective of the present work is to present the gaseous radioactive effluents control and the radioactivity assessment in the atmospheric air at IPEN’s campus, since there were implanted in 1988 at the Laboratory of Environmental Radiometry of IPEN. In both, gaseous radioactive effluents control and radioactivity assessment in the atmospheric, cellulose and charcoal cartridge filters are analyzed by gamma spectrometry – HPGe weekly, from the IPEN’s radioactive facilities, Accelerators and Cyclotron Center, IEA-R1 Research Reactor Center, Radiopharmacy Center - Building I and II and each 15 days collected from three air samplers located near the nuclear and radiation facilities of IPEN, respectively. The radionuclides determined in the majority of the samples throughout the sampling period were 131I, 18F and 67Ga.
Factors affecting the sup(7)Be concentration in surface air over a long period of monitoring in São Paulo, Brazil
2014 - DAMATTO, SANDRA; MADUAR, MARCELO; PECEQUILO, BRIGITTE; NOGUEIRA, PAULO; NISTI, MARCELO
sup(7)Be concentration in air surface over a long period of monitoring in the city of São Paulo, Brazil
2015 - DAMATTO, S.R.; MADUAR, M.F.; PECEQUILO, B.R.S.; NOGUEIRA, P.R.; NISTI, M.B.
Programa de monitoracao ambiental da usina de enriquecimento de uranio Almirante Alvaro Alberto
1988 - HIROMOTO, G.; JACOMINO, V.M.F.; VENTURINI, L.; MOREIRA, S.R.D.; GORDON, A.M.P.L.; DUARTE, C.L.; PECEQUILO, B.R.S.; MAZZILLI, B.P.
Assessment of the radiological control at the Ipen radioisotope production facility
2015 - CARNEIRO, JANETE C.G.G.; SANCHES, MATIAS P.; RODRIGUES, DEMERVAL L.; CAMPOS, DANIELA; NOGUEIRA, PAULO R.; DAMATTO, SANDRA R.; PECEQUILO, BRIGITTE R.
Assessment of the radiological control at the IPEN radioisotope production facility
2014 - CARNEIRO, JANETE C.G.G.; SANCHES, MATIAS P.; RODRIGUES, DEMERVAL L.; CAMPOS, DANIELA; NOGUEIRA, PAULO R.; DAMATO, SANDRA R.; PECEQUILO, BRIGITTE R.
Seasonal variation of sup(7)Be concentrations measured at ground level air in São Paulo - Brazil
2011 - DAMATTO, S.R.; MADUAR, M.F.; PECEQUILO, B.R.S.; NISTI, M.B.
Radiological study in caves of Southwest Brazil
2008 - ALBERIGUI, S.; SILVA, P.S.C.; CAMPOS, M.P.; DAMATTO, S.R.M.; PECEQUILO, B.R.; MAZZILLI, B.P.
The Parque Estadual Turístico do Alto Ribeira (PETAR) is located in the Southwestern part of São Paulo State, in Ribeira Valley. In this region is found the major number of cave occurrence in Brazil and also shelters the most visited caves of the country. Caves, usually located in a karstic zone, are characterized by the presence of carbonaceous rocks frequently fractured and collapsed. Carbonates (dolomites and calcite rocks) usually have low U and Th, however, surrounding rocks can be found containing in structural positions U and Th. Radon generated in these rocks may migrate in the subsoil penetrating this carbonate due to its greater permeability causing high radon concentration. It is known that radon emission depends on conditions of the local micrometerology, geological factors and the concentration of U and Th Decay series. In the sense to understand the radon concentrations in these caves, the objective oh this paper is to determine the 238U, 232Th, 226Ra, 228Ra and 210Po in rock, soil and sediment samples by alpha spectrometry and total alpha and beta measurement. The concentrations of radon and thoron in the air’s cave were determined in air by solid state nuclear track detectors. As a complementary study neutron activation analysis also were performed in soil, rock and sediment samples. Six of the most visited caves, named Santana, Água Suja, Morro Preto, Couto, Alambari and Laje Branca were studied. High radon concentrations were found in Santana Cave, the same with higher concentrations of U and Th.
Fast methodology for time counting optimization in gamma-ray spectrometry based on preset minimum detectable amounts
2008 - NISTI, M.B.; SANTOS, A.J.G.; PECEQUILO, B.R.S.; MADUAR, M.F.; ALENCAR, M.M.; DAMATTO, S.R.
Be-7 measured at ground air level and rainfall in the city of São Paulo
2013 - DAMATTO, SANDRA R.; SOUZA, JOSEILTON M.; FRUJUELE, JONATAN V.; MADUAR, MARCELO F.; LEONARDO, LUCIO; PECEQUILO, BRIGITTE R.S.