Power Distribution and Possible Influence on Fuel Failure in WWER-1000. (14th October 2008)

• Record Type: Journal Article
• Authors: Mikuš, Ján
• Other Names: Jencic Igor Academic Editor.
• Is Part Of: Science and technology of nuclear installations. Volume 2008(2008)
• Publication Date: 2008-10-14
• Subjects: Nuclear engineering -- Periodicals; Nuclear facilities -- Periodicals; Nuclear engineering; Nuclear facilities; Electronic journals; Periodicals; 621.48
• DOI: 10.1155/2008/753091
• Languages: English
• ISSNs: 1687-6075

Abstract

Abstract : 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).