Inventory and characterization of categories 3-5 disused sealed radioactive sources
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2019
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ANNUAL WASTE MANAGEMENT CONFERENCE, 45th
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Brazil has one of the biggest inventories of SRS in the world, not only because of the large industrial
park, the well-developed health care infrastructure and the numerous mining operations, but also by the
use of radioactive sources in consumer products, such as smoke detectors, lightning arresters, surge
protectors and even cardiac pacemakers. Presently, the inventory of DSRS at the WML is of more than
10,000; if the sources from lightning arresters, smoke detectors and Ir-192 with activities above the
clearance levels are included, the estimate is over 150,000. The Waste Management Laboratory (WML)
of the Nuclear and Energy Research Institute (IPEN/CNEN-SP) is responsible for the management and
treatment of these sources. An important aspect to consider is that Brazil does not have a defined strategy
or a protocol for screening and inventorying these sources, whose management was limited only to
storage. The WML started the development of methods and operational work, to characterize and reduce
the total volume of this inventory for the borehole-type final disposal facility yet to be constructed, where
the DSRS will be disposed of. The information available from these sources is in a database created in
1980, when the sources began to be received. Several records on the FRSD that were checked are
incomplete or simply incorrect, since there is no correspondence between the dates of entry of these
sources in the storage and their physical characteristics. Some reasons can be listed to try to understand
the divergences: the inspection when receiving the sources was not possible, no inspection procedure was
defined, there were technical difficulties to open the packages. The objective of this work is to organize
the inventory in a standardized way, control access, traceability, reduction of the necessary time to locate
and characterize the sources upon reception, and of the repetitive work in the operational routine, and
finally release of space in the storage.
Como referenciar
ROLINDO, NATALIE C.; TESSARO, ANA P.G.; SMITH, RICARDO B.; CAMPOS, CESAR; SAID, YASSER; MARUMO, JULIO T.; VICENTE, ROBERTO. Inventory and characterization of categories 3-5 disused sealed radioactive sources. In: ANNUAL WASTE MANAGEMENT CONFERENCE, 45th, March 3-7, 2019, Phoenix, Arizona, USA. Proceedings... Tempe, Arizona, USA: Waste Management Symposia, 2019. p. 1-10. Disponível em: http://repositorio.ipen.br/handle/123456789/31566. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.