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[en] In connection with methodological improvements of safety analyses, some effects of detail power distributions, that should be taken into account for the hot channel characteristics determination, have been studied. This determination concerns the whole channel power (power of the fuel rod) and its axial (along the channel) and radial (across the fuel pellet radius) distribution. The total power of the channel is studied from the point of possible restrictions for different numbers of main cooling loops in operation. For radial power distribution the effect of burnup has been studied and for axial distribution the effect of the control rod vicinity (its coupler part) has been evaluated. The DNBR and fuel temperatures have been the key safety parameters influenced by these hot channel characteristics and have been evaluated in this study (Authors)
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Vidovszky, Istvan (Kiadja and KFKI Atomenergia Kutatointezet, H-1525 Budapest 114, POB 49 (Hungary)); VUJE Trnava, Inc. - Engineering, Design and Research Organization, 918 64 Trnava (Slovakia); KFKI Atomic Energy Research Institute, H-1525 Budapest 114, POB 49 (Hungary); RRC 'Kurchatov Institute', Institute of Nuclear Reactors, VVER Department, 123182 Moscow (Russian Federation); Paks NPP Ltd., 7031 Paks (Hungary); SKODA JS a.s., 316 06 Plzen (Czech Republic); Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Tzarigradsko Shaussee 72, Sophia 1784, (Bulgaria); UJV Rez plc, 250 68 Rez (Czech Republic); 558 p; ISBN 963-372-627-1; 
; Nov 2002; p. 349-360; 12. Atomic Energy Research Symposium on WWER Physics and Reactor Safety; Sunny Beach (Bulgaria); 22-28 Sep 2002; Also available from VUJE Trnava a.s. - engineering, design and research organization, Okruzna 5, 918 64 Trnava (Slovak Republic); 4 refs., 14 figs.
; Nov 2002; p. 349-360; 12. Atomic Energy Research Symposium on WWER Physics and Reactor Safety; Sunny Beach (Bulgaria); 22-28 Sep 2002; Also available from VUJE Trnava a.s. - engineering, design and research organization, Okruzna 5, 918 64 Trnava (Slovak Republic); 4 refs., 14 figs.