发明名称 |
CORE AND FUEL ASSEMBLY OF PRESSURIZED-TUBE REACTOR (ALTERNATIVES) |
摘要 |
nuclear reactors. SUBSTANCE: reactor core incorporating fuel assemblies with nuclear fuel in the form of uranium dioxide and erbium oxide pellets should have rated mass fraction of U-235 constituting at least 2.4 mass percent. Erbium content of fuel is chosen from following formula: Er = 0.4 mas.% + 0.5 x (Cact + 0.2 x Cpr + 2.4) mas.%, where Er is mass fraction of erbium in nuclear fuel, mas.%; Cact is actual mass fraction of U-235 in nuclear fuel charged into fuel elements during their manufacture, mas.% ; Cpr is mass fraction of U-236 in nuclear fuel charged into fuel elements during their manufacture mas. %; Cact = 0 at Cpr <0.1 mas.%; K is variable chosen between +0.1 and +0.1 mas.%. Fuel elements used for pressurized-tube reactors should have definite proportion of rated mass fractions of U-235 and erbium oxide in nuclear fuel so as to improve reactor safety and to facilitate its servicing. Provision is made for maintaining steam void coefficient of reactivity for pressurized-tube reactor using additional absorbers. EFFECT: enhanced burnup fraction at reduced maximal heat power of fuel assembly and linear load on fuel elements. 6 cl
|
申请公布号 |
RU2176827(C2) |
申请公布日期 |
2001.12.10 |
申请号 |
RU20000100597 |
申请日期 |
2000.01.14 |
申请人 |
LEDOVATEL'SKIJ I KONSTRUKTORSKIJ INSTITUT EHNERGOT;ROSSIJSKIJ NAUCHNYJ TSENTR "KURCHATOVSKIJ INSTITUT";OTKRYTOE AKTSIONERNOE OBSHCHESTVO "MASHINOSTROITEL'NYJ ZAVOD";ROSSIJSKIJ NTS KURCHATOVSKIJ I;MASHINOSTROITEL NYJ ZD AOOT |
发明人 |
GABARAEV B.A.;KUPALOV-JAROPOLK A.I.;ROSLOV G.I.;CHERKASHOV JU.M.;BURLAKOV E.V.;KRAJUSHKIN A.V.;PONOMAREV-STEPNOJ N.N.;FEDOSOV A.M.;MEZHUEV V.A.;PANJUSHKIN A.K.;POTOSKAEV G.G. |
分类号 |
G21C3/62;(IPC1-7):G21C3/62 |
主分类号 |
G21C3/62 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|