Design of water-moderated heterogeneous cores in new STACY facility through JAEA/IRSN collaboration

Izawa, Kazuhiko; Tonoike, Kotaro; Leclaire, N.*; Duhamel, I.*

Proceedings of International Conference on Nuclear Criticality Safety (ICNC 2015) (DVD-ROM), p.965 - 976, 2015/09

In the post-Fukushima prospect, Japan Atomic Energy Agency, JAEA, intends to re-open its Static Experiment Critical Facility STACY, in order to contribute to the validation of fuel debris calculations in conditions close to those affected by the Fukushima Daiichi Nuclear Power Station accident. The reactor core of STACY is being modified by JAEA from homogeneous solution fuel core to heterogeneous pin-type fuel core. The first step of critical experiments is to establish reference experiments involving lattices of UO rods without fuel debris. A design of such experiments is in progress for the widest range of moderation ratios in the frame of JAEA/IRSN collaboration. For that purpose, perturbation calculation technique and stochastic geometry modeling technique were used with the MCNP5 and the JENDL-4.0 evaluated nuclear data library. The proposed paper will discuss all the aforementioned issues.

Temperature effects on reactivity in light water moderated UO cores with soluble poisons

Miyoshi, Yoshinori; Yamamoto, Toshihiro; Suzaki, Takenori; Kobayashi, Iwao

Journal of Nuclear Science and Technology, 29(12), p.1201 - 1211, 1992/12

https://doi.org/10.3327/jnst.29.1201

no abstracts in English

EXPANDA-70D; A Oe Dimensional Diffusion Code for Multigroup Criticality and Perturbation Calculations using JAERI-fast sets of 70 Group Structure

; Katsuragi, Satoru; Tone, Tatsuzo

JAERI-M 4953, 72 Pages, 1972/08

JAERI-M-4953.pdf:1.77MB

no abstracts in English