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Life Management Programme for Long Term Operation of Reactors and Nuclear Facilities. Ageing Management of Research Reactors in Argentina

Abstract

The reactor RA-0 is a critical facility for the performance of exercises for research, education and training. It is located in the city of Cordoba, in the building of the Faculty of Physical Sciences. Its rated power is 1 W, which minimizes the shielding requirements for civil work and dispenses with a core cooling system. The core consists of two concentric and removable tanks of anodized aluminium with an active volume of 70 l. Moderator is demineralized light water, which enters through the bottom of the external tank with an overflow at the top of the inner tank that is removable. The fuel elements of 20.00% enriched UO{sub 2} are housed vertically in a grid with 232 holes of diameter greater than the fuel cladding. Other holes of smaller diameter allow circulation of the moderator, and four holes accommodate detector tubes or tubes for mounting experience. The control system consists of four control rods built with a cadmium sheet wrapped in a stainless steel cladding. These are inserted vertically and tangentially to the outer tank. Each bar is magnetically coupled to an electromagnet secured to the rise and fall mechanism, which also allows them to function as control rods. In  More>>
Authors:
Di Luch, A.; Fabbri, S.; Vega, G.; Versaci, R. [1] 
  1. National Atomic Energy Commission (CNEA), Buenos Aires (Argentina)
Publication Date:
Aug 15, 2014
Product Type:
Conference
Report Number:
IAEA-TECDOC-1748
Resource Relation:
Conference: IAEA Technical Meeting on Research Reactor Ageing Management, Modernization and Refurbishment, Vienna (Austria), 10-14 Oct 2011; Other Information: 5 refs., 11 figs.; Related Information: In: Project Experiences in Research Reactor Ageing Management, Modernization and Refurbishment. Report of a Technical Meeting on Research Reactor Ageing Management, Modernization and Refurbishment| 208 p.
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; AGING; ALUMINIUM; ARGENTINA; CADMIUM; CLADDING; CONTROL ELEMENTS; ELECTROMAGNETS; FUEL ELEMENTS; MANAGEMENT; MODERATORS; NUCLEAR FACILITIES; NUCLEAR FUELS; REACTOR ACCIDENTS; REACTOR CONTROL SYSTEMS; REACTOR COOLING SYSTEMS; REACTOR OPERATION; RESEARCH REACTORS; STAINLESS STEELS; TANKS; URANIUM DIOXIDE
OSTI ID:
22278467
Research Organizations:
International Atomic Energy Agency, Research Reactor Section, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISBN 978-92-0-107814-8; ISSN 1011-4289; TRN: XA14M5954099822
Availability:
Available from INIS in electronic form. Also available on-line: http://www-pub.iaea.org/MTCD/publications/PDF/TE-1748_web.pdf; Enquiries should be addressed to IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books
Submitting Site:
INIS
Size:
page(s) 5-13
Announcement Date:
Nov 19, 2014

Citation Formats

Di Luch, A., Fabbri, S., Vega, G., and Versaci, R. Life Management Programme for Long Term Operation of Reactors and Nuclear Facilities. Ageing Management of Research Reactors in Argentina. IAEA: N. p., 2014. Web.
Di Luch, A., Fabbri, S., Vega, G., & Versaci, R. Life Management Programme for Long Term Operation of Reactors and Nuclear Facilities. Ageing Management of Research Reactors in Argentina. IAEA.
Di Luch, A., Fabbri, S., Vega, G., and Versaci, R. 2014. "Life Management Programme for Long Term Operation of Reactors and Nuclear Facilities. Ageing Management of Research Reactors in Argentina." IAEA.
@misc{etde_22278467,
title = {Life Management Programme for Long Term Operation of Reactors and Nuclear Facilities. Ageing Management of Research Reactors in Argentina}
author = {Di Luch, A., Fabbri, S., Vega, G., and Versaci, R.}
abstractNote = {The reactor RA-0 is a critical facility for the performance of exercises for research, education and training. It is located in the city of Cordoba, in the building of the Faculty of Physical Sciences. Its rated power is 1 W, which minimizes the shielding requirements for civil work and dispenses with a core cooling system. The core consists of two concentric and removable tanks of anodized aluminium with an active volume of 70 l. Moderator is demineralized light water, which enters through the bottom of the external tank with an overflow at the top of the inner tank that is removable. The fuel elements of 20.00% enriched UO{sub 2} are housed vertically in a grid with 232 holes of diameter greater than the fuel cladding. Other holes of smaller diameter allow circulation of the moderator, and four holes accommodate detector tubes or tubes for mounting experience. The control system consists of four control rods built with a cadmium sheet wrapped in a stainless steel cladding. These are inserted vertically and tangentially to the outer tank. Each bar is magnetically coupled to an electromagnet secured to the rise and fall mechanism, which also allows them to function as control rods. In case of emergency the electromagnet stops, and the bar falls under the influence of gravity. Obsolescence was detected in some elements of instrumentation, notably in former relays, starting systems and scram functions, but checks for updates in the data acquisition system have also been undertaken proactively to keep updated to the reactor. No ageing in mechanical systems has been verified.}
place = {IAEA}
year = {2014}
month = {Aug}
}