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Bykovskij, V.S.; Lantsov, M.N.; Lependin, V.I.; Makarov, O.I.; Matveenko, V.I.
Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Obninsk. Fiziko-Ehnergeticheskij Inst1986
Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Obninsk. Fiziko-Ehnergeticheskij Inst1986
AbstractAbstract
[en] Results of calculational and experimental investigations obtained when studying reactivity temperature coefficients (RTC) in uranium-water assemblies with ρH/ρ5 #approx # 130 depending on the way of positing the gadolinium burnable poison rods (BPR) along the core cross section: uniformly in the core centre and at its peripheral parts. RTG is determined in subcritical state by the shooting source method. The calculations are carried out in two-group diffusion approximation using (r, Z)-geometry in the FACTOR-3, DNESTR programs and (r, φ)-geometry taking account of the BPR real position in the RFI-80 program. The investigations displayed a noticeable dependence of RTG value on the way of BPR position in a core under conditions of reflector and absorbing rods concurrent contribution to the balance of assembly reactivities
Original Title
Vliyanie geterogennosti razmeshcheniya pogloshchayushchikh sterzhnej v aktivnoj zone na formirovanie temperaturnogo ehffekta reaktivnosti uran-vodnykh sborok
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Source
1986; 12 p; 7 refs.; 2 figs.
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Report
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Numerical Data
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DATA, DISTRIBUTION, ELEMENTS, ENRICHED URANIUM REACTORS, INFORMATION, MATERIALS, METALS, NEUTRON ABSORBERS, NUCLEAR POISONS, NUMERICAL DATA, POWER REACTORS, PWR TYPE REACTORS, RARE EARTHS, REACTIVITY COEFFICIENTS, REACTOR MATERIALS, REACTORS, THERMAL REACTORS, WATER COOLED REACTORS, WATER MODERATED REACTORS
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