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

来源：

ATOMIC ENERGY | 2020年 / 129卷 / 02期

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

页码：103 / 107

页数：5

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