NONUNIFORM OXIDATION OF LWR SPENT FUEL IN AIR

被引：23
|
作者：
THOMAS, LE
SLAGLE, OD
EINZIGER, RE
机构：
[1] Pacific Northwest Laboratories, Richland
来源：
JOURNAL OF NUCLEAR MATERIALS | 1991年 / 184卷 / 02期
关键词：
D O I：
10.1016/0022-3115(91)90502-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Oxidation of light-water-reactor (LWR) spent fuel fragments in air at 175-degrees-C was investigated by ceramography, X-ray diffractometry, and transmission electron microscopy. Enhanced oxidation of the original fuel pellet edge was observed in a typical oxidized fragment and the local structures were analyzed in micro-core samples. The oxidation proceeded by advance U4O9 formation along grain boundaries, grain boundary microcracking, and subsequent U4O9 growth into enveloped UO2 grains. No U3O7 or higher oxidation products were detected even near fragment edges where UO2 conversion was complete. The tendency of LWR spent fuel to oxidize along grain boundaries has been attributed to short circuit oxygen penetration through fission gas microbubbles concentrated on the boundaries. Enhanced grain boundary oxidation of the pellet edges in low-gas-release LWR fuel is further attributed to temperature-related variations in bubble spacing, and is seen as a complicating factor in attempts to model postirradiation oxidation behavior.
引用
收藏
页码：117 / 126
页数：10
相关论文
共 50 条
  • [21] NONDESTRUCTIVE EVALUATION OF LWR SPENT FUEL SHIPPING CASKS.
    Ballard, D.W.
    1978, : 466 - 486
  • [22] REMOTE CHARACTERIZATION OF SPENT LWR FUEL FOR GEOLOGIC DISPOSAL DEMONSTRATIONS
    DAVIS, RB
    PASUPATHI, V
    STELLRECHT, DE
    FISH, RL
    TRANSACTIONS OF THE AMERICAN NUCLEAR SOCIETY, 1980, 34 (JUN): : 838 - 839
  • [23] Steam oxidation of fuel in defective LWR rods
    Olander, DR
    Kim, YS
    Wang, WE
    Yagnik, SK
    JOURNAL OF NUCLEAR MATERIALS, 1999, 270 (1-2) : 11 - 20
  • [24] OXIDATION OF SPENT FUEL IN AIR AT 175 TO 195-DEGREES-C
    EINZIGER, RE
    THOMAS, LE
    BUCHANAN, HC
    STOUT, RB
    JOURNAL OF NUCLEAR MATERIALS, 1992, 190 : 53 - 60
  • [25] Application of the pyrochemical process to recycle of actinides from LWR spent fuel
    Argonne National Laboratory, Argonne, IL 60439, United States
    Prog. Nucl. Energy, 1-2 (175-186):
  • [26] LWR spent fuel transmutation with fusion-fission hybrid reactors
    Francois, J. L.
    Dorantes, J. J.
    Martin-del-Campo, C.
    Herrera, J. J. E.
    PROGRESS IN NUCLEAR ENERGY, 2013, 65 : 50 - 55
  • [27] ASSESSMENT OF INTERIM STORAGE OF SPENT HIGH-BURNUP LWR FUEL
    JOHNSON, AB
    BAILEY, WJ
    TRANSACTIONS OF THE AMERICAN NUCLEAR SOCIETY, 1982, 40 : 150 - 152
  • [28] STATUS OF THE FRG ACTIVITIES ON DIRECT DISPOSAL OF SPENT LWR-FUEL
    CLOSS, KD
    ENGELMANN, HJ
    NUCLEAR ENGINEERING AND DESIGN, 1990, 118 (01) : 99 - 106
  • [29] URANIUM RECOVERY FROM LWR SPENT FUEL FOR THE FUTURE FR DEPLOYMENT
    Fukasawa, Tetsuo
    Yamashita, Junichi
    Hoshino, Kuniyoshi
    Fujimura, Koji
    Sasahira, Akira
    ICONE16: PROCEEDING OF THE 16TH INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING - 2008, VOL 2, 2008, : 105 - 109
  • [30] LWR spent fuel transmutation in a high power density fusion reactor
    Sahin, S
    Übeyli, M
    ANNALS OF NUCLEAR ENERGY, 2004, 31 (08) : 871 - 890
12345