WFRF:(Villamarin Fernandez D)
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Reactivity determination techniques in ads systems for the incineration of radioactive wastes
- Fernandez-Ordonez, M. (author)
- Villamarín, D. (author)
- Bécares, V. (author)
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- González-Romero, E. (author)
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- (creator_code:org_t)
- 2010
- 2010
- English.
- In: International Conference on the Physics of Reactors 2010, PHYSOR 2010. - 9781617820014 ; , s. 2933-2945
- Conference paper (peer-reviewed)
Abstract
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- The Subcritical Accelerator Driven Systems (ADS) have been proposed as one of the strategies for reducing the inventory and radiotoxicity of the spent nuclear fuel. The reactivity monitoring of ADS has been found to play a key role in the development of this technology. Although the current-to-power technique has been proposed as the main reactivity monitoring technique, it is necessary to periodically calibrate it using additional techniques. In this work, the standard reactivity monitoring techniques using Pulsed Neutron Source experiments have been evaluated in the coupled fast-thermal subcritical assembly YALINA-Booster. In addition, a new method to measure the absolute value of the system reactivity is proposed by using micro-interruptions of the continuous external neutron source (beam-trips). This technique, used for the first time in a subcritical core, provided results compatible with the standard PNS methods and can be used in future power ADS. Even more, to allow instantaneous reactivity checks, we have developed and tested the necessary electronic chains and data acquisition system to determine the system reactivity during a single beam trip, thus allowing the determination of the reactivity within a second.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- ADS
- Monitoring
- Reactivity
- Transmutation
- Wastes
Publication and Content Type
- ref (subject category)
- kon (subject category)
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