Power distribution and possible influence on fuel failure in WWER-1000

被引：0
|
作者：
Mikuš, Ján [1 ]
机构：
[1] Research Centre Řež Ltd., 250 68 Řež, Czech Republic
来源：
Science and Technology of Nuclear Installations | 2008年 / 2008卷
关键词：
Fission rates - Fuel assembly - Fuel failure - Light water - Power distributions - Radial power distributions - Static loads - Zero power reactors;
D O I：
10.1155/2008/753091
中图分类号：
学科分类号：
摘要：
The work is focused on the influence of investigation of some core heterogeneities and construction materials on the space power (fission rate) distribution in WWER-1000-type cores, especially from viewpoint of the values and gradient occurrence that could result in static loads with some consequences, for example, fuel pin (FP) or fuel assembly (FA) bowing and possible contribution to the FP failure root causes. For this purpose, experimental data and their analysis from two earlier performed measurements on light water, zero-power reactor LR-0 were used, concerning the relative radial power distribution determined by measurements in a WWER-1000-type core containing single FPs with homogeneous gadolinium admixture (Gd 2 O 3) and the relative radial power distribution determined by measurements in FA situated on the periphery of a WWER-1000-type core neighbouring the baffle (thermal shielding). Copyright © 2008 Jan Mikus.
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