Fission Gas Release from Irradiated Uranium-Plutonium Nitride Fuel

被引:4
|
作者
Grachev, A. F. [1 ]
Zabud'ko, L. M. [1 ]
Skupov, M. V. [2 ]
Kryukov, F. N. [3 ]
Teplov, V. G. [3 ]
Marinenko, E. E. [4 ]
Porollo, S. I. [4 ]
机构
[1] Proryv JSC, Moscow, Russia
[2] Bochvar High Technol Res Inst Inorgan Mat VNIINM, Moscow, Russia
[3] Res Inst Atom Reactors SSC RIAR, State Sci Ctr Russian Federat, Dimitrovgrad, Russia
[4] Leipunskii Inst Phys & Power Engn IPPE, State Sci Ctr Russian Federat, Obninsk, Russia
关键词
Nitrides - Plutonium compounds - Fission products - Fuels - Uranium compounds - Krypton - Xenon;
D O I
10.1007/s10512-021-00712-z
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
The results of an investigation of fission gas release from mixed nitride fuel after irradiation to maximum burnup 7.5% h. a. in 10 experimental FA in BN-600 are reported. It is shown that gas release commences at burnup >2% h.a. and increases with increasing burnup. The burnup dependence of gas release for mixed and uranium nitride fuel coincide quite well. The fission gas beneath the fuel-rod cladding consists of three basic components: xenon, helium, and krypton. The content of the remaining gases (N-2, Ar, O-2, CO2) does not exceed tenths of a percent. Xenon has the highest specific release, followed by helium and krypton. Helium has the highest relative release (>40%). Xenon and krypton have almost identical release not exceeding 20% for most of the investigated fuel rods. A higher release of fission gas is associated with either an increase of the fuel temperature (>1500 degrees C) or features of fuel microstructure.
引用
收藏
页码:103 / 107
页数:5
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