Fission Gas Release Behavior in High Burnup UO2 Fuels with Developed Rim Structure

2002 ◽  
Vol 39 (sup3) ◽  
pp. 668-674 ◽  
Author(s):  
Katsumi Une ◽  
Shinji Kashibe ◽  
Kimio Hayashi
Keyword(s):  
Gas Release ◽  
Release Behavior ◽  
Fission Gas ◽  
High Burnup ◽  
Fission Gas Release

Fission Gas Release Behavior of High Burnup UO2 Fuel under Reactivity Initiated Accident Conditions

1999 ◽  
Vol 36 (11) ◽  
pp. 1101-1104 ◽  
Author(s):  
Hideo SASAJIMA ◽  
Jinichi NAKAMURA ◽  
Toyoshi FUKETA ◽  
Hiroshi UETSUKA
Keyword(s):  
Gas Release ◽  
Release Behavior ◽  
Fission Gas ◽  
High Burnup ◽  
Accident Conditions ◽  
Fission Gas Release

The effect of cladding restraint on fission gas release behavior

1988 ◽  
Vol 158 ◽  
pp. 64-70 ◽  
Author(s):  
Toshiaki Kogai ◽  
Kenichi Ito ◽  
Yoshihiko Iwano
Keyword(s):  
Gas Release ◽  
Release Behavior ◽  
Fission Gas ◽  
Fission Gas Release

Identification of Radial Position of Fission Gas Release in High-Burnup Fuel Pellets under RIA Conditions

2010 ◽  
Vol 47 (2) ◽  
pp. 202-210 ◽  
Author(s):  
Hideo SASAJIMA ◽  
Tomoyuki SUGIYAMA ◽  
Toshinori CHUTO ◽  
Fumihisa NAGASE ◽  
Takehiko NAKAMURA ◽  
...  
Keyword(s):  
Radial Position ◽  
Gas Release ◽  
Fuel Pellets ◽  
Fission Gas ◽  
High Burnup ◽  
Fission Gas Release

Instant Release Fractions from Corrosion Studies with High Burnup LWR Fuel.

2012 ◽  
Vol 1475 ◽  
Author(s):  
Ella Ekeroth ◽  
Daqing Cui ◽  
Jeanett Low ◽  
Michael Granfors ◽  
Hans-Urs Zwicky ◽  
...  
Keyword(s):  
Preparation Method ◽  
Gas Release ◽  
Time Period ◽  
Corrosion Studies ◽  
Geological Repository ◽  
Fission Gas ◽  
High Burnup ◽  
Product Inventory ◽  
Fission Gas Release ◽  
Fractional Release

ABSTRACTDuring irradiation in the reactor, a fraction of the fission product inventory will have segregated either to the gap between the fuel and the cladding or to the grain boundaries in the fuel. Of these nuclides, the behavior of the fission gases is best known. The part of the inventory that is rapidly released upon contact with water is designated the instant release fraction (IRF). Previous studies have shown that IRF and fission gas release (FGR) seem to be correlated. Studies of the instant release fraction from high burnup fuel is of interest for the assessment of the safety of a geological repository.The instant release fractions of 129I and 137Cs from five different light water reactor (LWR) fuel rods with a burnup range of 43 to 75 MWd/kgU and a fission gas release range from 0.9 to 5.0 % were studied. Four types of fuel samples (pellet, fragment, powder and fuel rodlet) have been used in the experiments. The results show that the fuel sample preparation method has a significant impact on the release from high burnup fuel samples over the time period covered by this study. Leaching of high burnup fuel samples with fuel detached from the cladding shows the highest release. The fractional 129I release from such fragment samples is similar to the FGR in the corresponding rod. On the other hand, corresponding fractional release of 137Cs is lower.

Evaluation of Fission Gas Release in High-Burnup Light Water Reactor Fuel Rods

1993 ◽  
Vol 102 (2) ◽  
pp. 210-231 ◽  
Author(s):  
John O. Barner ◽  
Mitchel E. Cunningham ◽  
Maxwell D. Freshley ◽  
Donald D. Lanning
Keyword(s):  
Reactor Fuel ◽  
Light Water Reactor ◽  
Gas Release ◽  
Fuel Rods ◽  
Light Water ◽  
Water Reactor ◽  
Fission Gas ◽  
High Burnup ◽  
Fission Gas Release
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