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Apr 19 – 22, 2022
Vienna, Austria
Europe/Vienna timezone
FR22 starts in Vienna 19 - 22 April 2022 Online Stream: https://event.do/iaea/a/#/events/5048

Neutronic Calculation of CEFR Core using Different Nuclear Data Libraries

Apr 22, 2022, 1:30 PM
2h
Vienna, Austria

Vienna, Austria

POSTER Track 6. Modelling, Simulations, and Digitilization Poster Session

Speaker

Andreea Moise (Institute for Nuclear Research Pitesti)

Description

The uncertainities of evaluated nuclear data represent one of the most important sources of uncertainity in the reactor physics simulation. The improvement of these data used is requiered for the development, safety assesment and licensing process of a reactor. Is generally recognised the need for further investigation (experimental included) regarding the uncertainities on some main cross-section (e. g. 238U, 242Pu, minor actinides etc.).
The paper deals with the investigation of keff discrepancies induced by the differences among the cross-sections from ENDF/B-VIII.0, JEFF-3.3 and JENDL-4.0 libraries. For this study, a benchmark neutronic calculations for the first criticality of China Experimental Fast Reactor core configuration have been performed using the Continuous-energy Monte Carlo Reactor Physics Burn-up Calculation Code - SERPENT 2, version 2.1.31. The reactor reached the first criticality for a load of 72 fuel subassemblies at cold state (250°C±5°C) with only one regulating rod inserted at a certain position; all other control rods have been withdrawn out-of-core position.
The results of SERPENT 2 code show a relatively large variation in the keff values obtained with different libraries, as following: ENDF/B-VIII.0 library yields excess reactivity of 98 pcm while JEFF3.3 and JENDL-4.0 yield excess reactivity of 243 pcm and 627 pcm, respectively.

Country/Int. organization Romania
Affiliation/Organization Institute for Nuclear Research Pitesti
Speaker's email address andreea.moise@nuclear.ro
Speaker's title Ms

Primary author

Andreea Moise (Institute for Nuclear Research Pitesti)

Co-author

Dr Iuliana Visan ( Institute for Nuclear Research Pitesti)

Presentation materials

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Peer reviewing

Paper