OPAL multicycle core benchmark using TRIPOLI4.10® and COCONEUT2.0
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Date
2019-03-24
Journal Title
Journal ISSN
Volume Title
Publisher
European Research Reactor Conference, RRFM
Abstract
The aim of the work performed by TechnicAtome is to benchmark its codes with
data provided by ANSTO on the OPAL core. Calculation schemes used are Monte-
Carlo TRIPOLI4.10® (with its depletion module) and deterministic COCONEUT2.0.
After validating the models used on startup core configurations, we carry on the
benchmarking process by performing the depletion calculations over cycles 7-13,
as provided by ANSTO.
Use of pre and post processing tools is highlighted, making the whole process
easier to cross-check. COCONEUT2.0 in its homogeneous version and
TRIPOLI4.10®, even though they are very different models, both show a similar
increasing trend in the k-eff within each cycle, possibly due to an overestimation of
cadmium wires burnup. On the other hand, COCONEUT2.0 in its semiheterogeneous
version shows a rather flat k-eff behaviour within each cycle which
could mean a better burnup calculation of both Cd and U-235. All three codes
however show a trend between the cycles, consistent with that observed by other
CRP participants, with an increase in the k-eff.
Burnup calculations, both with COCONEUT2.0 and TRIPOLI4.10® are satisfactory.
Description
Keywords
OPAL Reactor, ANSTO, Australia, Reactor cores, Calculation methods, Monte Carlo Method, Benchmarks, Reactor start-up, Burnup
Citation
Decroocq, M., Bouret, C., Couybes, J., Privas, E., Gavoille, N., Koubbi, J., Manifacier, L., & Braoudakis, G. (2019). OPAL multicycle core benchmark using TRIPOLI4.10® and COCONEUT2.0. Paper presented to the RRFM/IGORR 19, Jordan from 24th to 28th March 2019. Retrieved from: https://www.euronuclear.org/download/rrfm-2019-part-1/#