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A multi-batch approach for enhanced plutonium incineration in the thorium-based I<sup>2</sup>S-LWR design

Kotlyar, D and Parks, GT (2016) A multi-batch approach for enhanced plutonium incineration in the thorium-based I<sup>2</sup>S-LWR design. In: UNSPECIFIED pp. 1-9..

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Abstract

This paper presents a thorium-plutonium fuel cycle, utilizing a multi-batch reloading scheme, developed for the Integral Inherently Safe Light Water Reactor (I 2 S-LWR). The I 2 S-LWR is an advanced 2850 MWt integral pressurized water reactor with enhanced safety beyond that of Gen-III+ reactors. Its baseline fuel and cladding materials are U 3 Si 2 and advanced FeCrAl steel, respectively. The advanced steel cladding can withstand longer exposure periods with significantly lower degradation rates compared to traditional Zr-based alloys. In principle, increasing the number of batches allows higher discharge burnups and thus deeper Pu and transuranic elements (TRU) incineration to be achieved. Therefore, various refueling strategies were considered in this study, i.e. 3- and 7.56-batch schemes. The results confirm that increasing the number of batches allows the discharge burnup to be increased by 20% (above 100 MWd/kg), which improves the Pu incineration performance. In addition, the increased number of batches improves the reactivity coefficients and flattens power peaking factors.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div A > Energy
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:39
Last Modified: 03 Aug 2017 03:03
DOI: