Measurement of U Doppler Effect using various samples in FCA XVII-1

Ando, Masaki; Okajima, Shigeaki; Oigawa, Hiroyuki

JAERI-Research 2001-017, 20 Pages, 2001/03

JAERI-Research-2001-017.pdf:0.82MB

U Doppler effect measurements were carried out using 6 uranium samples with various composition or diameter varying self-shielding factors of U. Calculation accuracy of the standard analysis method for fast reactor cores at FCA was investigated.The Doppler effect were measured by the sample-heated and reactivity worth measurement method up to 800 degree in the FCA XVII-1 assembly, which simulated Na-cooled MOX fueled FBR. In the analysis, the Doppler effect was calculated using the effective cross sections obtained by the PEACO-X code. The calculated values based on the diffusion theory agreed well with the experiment for the U-metal and UO samples. The calculation underestimated the experiment from 10% to 30% for the UO samples containing BeO. This underestimation was improved by the use of the transport calculation. The calculation, however, underestimated about 20% for the sample whose background cross section is greater than 300 barns.

The effect of fission products on burnup characteristics in high conversion light water reactors

; ; ;

Nuclear Technology, 80, p.250 - 262, 1988/00

https://doi.org/10.13182/NT88-A34049

no abstracts in English

Measurement of Reactiviy Worths of Burnable Poison Rods in Enriched Uranium Graphite-Moderated Core Simulated to High Temperature Gas Cooled Reactor

Akino, Fujiyoshi; ; ; ;

JAERI-M 9223, 21 Pages, 1980/11

JAERI-M-9223.pdf:1.34MB

no abstracts in English