Multipurpose gamma-irradiator and mobile unit with an electron beam accelerator developed in Brazil
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2017
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INTERNATIONAL CONFERENCE ON APPLICATIONS OF RADIATION SCIENCE AND TECHNOLOGY
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Resumo
Radiation processing technology for industrial and environmental applications has been
developed and used worldwide in the fields of water treatment, advanced materials, nanotechnology,
medicine, tissue engineering, disinfestations and disinfection of books and
documents, processes and industrial production and natural resources, among others.
The Radiation Technology Centre (RTC) of the Nuclear Energy Research Institute (IPEN),
of CNEN, Brazil, developed a small size continuous run and multipurpose industrial
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irradiator with a revolutionary design and national technology to be used as a demonstration
facility for manufacturers and contract service companies that need economical and logistical
in-house irradiation system alternatives. It will be useful for supporting the local
scientific community for product and process development using
-radiation, assisting the
traditional and potential users on process validation, and for training and qualification of
operators and radioprotection officers. The technology developed for this facility consists
of a continuous tote box transport system comprising a single concrete vault, where the
automated transport system of products in and out of the irradiator utilizes a revolving
door integrated with the shielding, avoiding the traditional maze configuration. Covering
76 m2 of floor area, the irradiator design is product overlap sources with a maximum 60Co
capacity of 37 PBq (tote boxes, Category IV, wet storage). The performed qualification
programme of this multipurpose irradiator was based on AAMI/ISO 11137 standard. The
irradiator currently holds 7:4 PBq (200 kCi) of 60Co. For irradiator dose optimization, the
source distribution was done using the Cadgamma software. The poly-methylmetacrylate
(PMMA) dosimeter system was used for irradiator dose mapping. The economic analysis
and performance, concerning to the dose uniformity and 60Co utilization efficiency were
calculated and compared with other commercial
irradiators available in the market.
The RTC is involved in establishing a mobile electron beam accelerator unit to treat industrial
effluents for reuse purposes. The mobile unit will be equipped with an electron beam
accelerator (0:7 MeV, 20 kW) with safety requirements (BSS, IAEA and CNEN Safety Standards),
and can be used for effluent treatment from petroleum production, for petroleum
desulfurization, and, in addition, for degradation of toxic organic compounds in wastewater
for reuse. This project is supported by the IAEA (TC Project BRA1035, 2016–2018) and by
the Brazilian Financial of Studies and Project (FINEP). To enlarge the national capacity to
treat industrial effluents using electron beam accelerators, the mobile unit treating effluents
on site from 1 m3/h up to 1000 m3/day, will provide an effective facility between a
laboratory-scale plant to a large-scale plant, with the objective to demonstrate its efficacy
and to transfer the technology. Studies have taken place in various productive sectors
in the country and in other foreign laboratories to prove that radiation treatment offers
technological and economic benefits over conventional techniques for treating recalcitrant
pollutants.
Como referenciar
CALVO, W.A.P.; DUARTE, C.L.; SOMESSARI, S.L.; SPRENGER, F.E.; COSTA, F.E.; FEHER, A.; SALVADOR, P.A.V.; OMI, N.M.; SILVA, L.G.A.; LAINETTI, F.F.; RELA, P.R.; SAMPA, M.H.O. Multipurpose gamma-irradiator and mobile unit with an electron beam accelerator developed in Brazil. In: INTERNATIONAL CONFERENCE ON APPLICATIONS OF RADIATION SCIENCE AND TECHNOLOGY, April 24-28, 2017, Vienna, Austria. Abstract... Vienna: IAEA, 2017. p. 176-176. Disponível em: http://repositorio.ipen.br/handle/123456789/27770. Acesso em: 09 May 2024.
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.