ADEMAR JOSE POTIENS JUNIOR
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Artigo IPEN-doc 21242 A new storage facility for institutional radioactive wastes at IPEN2015 - VICENTE, ROBERTO; DELLAMANO, JOSE C.; POTIENS JUNIOR, ADEMAR J.IPEN, the Nuclear and Energy Research Institute in Sao Paulo, Brazil, has been managing the radioactive wastes generated in its own activities of research and radioisotope production as well as those received from many radioisotope users in the country since its start up in 1958. Final disposal options are presently unavailable for the wastes that cannot be managed by release after decay. Treated and untreated wastes including disused sealed radioactive sources and solid and liquid wastes containing radionuclides of the uranium and thorium series or fission and activation products are among the categories that are under safe and secure storage. This paper discusses the aspects considered in the design and describes the startup of a new storage facility for these wastes.Artigo IPEN-doc 04454 Ultraviolet and laser radiation dosimetry using phototransferred thermoluminescence in CaSOsub(4):Dy1996 - POTIENS JUNIOR, A.J.; CAMPOS, L.L.Artigo IPEN-doc 19823 Experience in the management of disused lightning rods containing sup(241)Am in a Research Institute in Brazil2013 - VICENTE, ROBERTO; POTIENS JUNIOR, ADEMAR; SAKATA, SOLANGE; DELLAMANO, JOSERadioactive lightning rods (RLR) were manufactured and installed in Brazil for almost two decades, before they were prohibited in 1989. Structures protected by this type of lightning preventers included residential buildings, schools, commercial and industrial facilities, among others. It is estimated that about 3.4 TBq of 241Am were used by manufacturers, and a total of 75,000 pieces with a mean activity of about 46 MBq were in the market. While only a fraction of the total has been recovered, the almost twenty thousand pieces already collected at the Nuclear and Energy Research Institute (IPEN) had their sources successfully separated from the remaining recyclable metal scrap and are now encapsulated in lead containers for final disposal.