scholarly journals Scoping study of flowpath of simulated fission products during secondary burning of crushed HTGR fuel in a quartz fluidized-bed burner

1976 ◽  
Author(s):  
J Rindfleisch ◽  
V Barnes
Keyword(s):  
Fluidized Bed ◽  
Fission Products ◽  
Scoping Study ◽  
Htgr Fuel

Irradiation behavior of pyrolytic silicon carbide

1983 ◽  
Vol 41 ◽  
pp. 72-73
Author(s):  
R. J. Lauf
Keyword(s):  
Silicon Carbide ◽  
Fission Products ◽  
Thermodynamics And Kinetics ◽  
Neutron Fluences ◽  
Fuel Particles ◽  
Sic Coatings ◽  
Irradiation Behavior ◽  
Kinetics Of ◽  
Htgr Fuel

Fuel particles for the High-Temperature Gas-Cooled Reactor (HTGR) contain a layer of pyrolytic silicon carbide to act as a miniature pressure vessel and primary fission product barrier. Optimization of the SiC with respect to fuel performance involves four areas of study: (a) characterization of as-deposited SiC coatings; (b) thermodynamics and kinetics of chemical reactions between SiC and fission products; (c) irradiation behavior of SiC in the absence of fission products; and (d) combined effects of irradiation and fission products. This paper reports the behavior of SiC deposited on inert microspheres and irradiated to fast neutron fluences typical of HTGR fuel at end-of-life.

PBMR Confinement Analysis During Helium Pressure Boundary Breaks

2008 ◽  
Author(s):  
Joan Fontanet ◽  
Luis E. Herranz ◽  
Alastair Ramlakan ◽  
Lolan Naicker
Keyword(s):  
Mass Flow ◽  
Ad Hoc ◽  
Fission Products ◽  
Helium Pressure ◽  
Gas Composition ◽  
Scoping Study ◽  
Aerosol Mass ◽  
Simulation Strategy ◽  
Aerosol Dust ◽  
Accident Sequences

A scoping study on a confinement approach to a PBMR type plant was performed to quantify its performance in terms of retention and thermal-hydraulics in case of a postulated breach in the Helium Pressure Boundary. This paper introduces a simulation strategy for accident analyses of a PBMR confinement. Based on two accident sequences characterized by Helium Pressure Boundary breaches, a small (AOO) and a large (DBA) break, the estimates from the ASTEC and CONTAIN codes are presented and compared to check their capabilities and consistency. The results obtained indicate that both codes predict very similar thermal-hydraulic responses of the confinement both in magnitude and timing. As for the aerosol behaviour, both codes predict that most of inventory coming into the confinement is eventually depleted on the walls and only about 1% of the aerosol dust is released to environment. The cross-comparison of codes states that largest differences are in the inter-compartmental flows and the in-compartment gas composition. Concerning the capabilities of the codes, CONTAIN has shown to be more robust in dealing with the injection of large aerosol mass flow and with a very small injection of fission products. ASTEC however has an ad-hoc model for aerosol retention in filters.

Release behavior of metallic fission products from HTGR fuel particles at 1600 to 1900°C

1993 ◽  
Vol 202 (1-2) ◽  
pp. 47-53 ◽  
Author(s):  
Kazuo Minato ◽  
Toru Ogawa ◽  
Kousaku Fukuda ◽  
Hajime Sekino ◽  
Hideyuki Miyanishi ◽  
...  
Keyword(s):  
Fission Products ◽  
Release Behavior ◽  
Fuel Particles ◽  
Htgr Fuel

Distribution of fission products in irradiated graphite materials of HTGR fuel assemblies: Third and fourth OGL-1 fuels

1985 ◽  
Vol 136 (2-3) ◽  
pp. 207-217 ◽  
Author(s):  
K. Hayashi ◽  
T. Kikuchi ◽  
F. Kobayashi ◽  
K. Minato ◽  
K. Fukuda ◽  
...  
Keyword(s):  
Fission Products ◽  
Irradiated Graphite ◽  
Fuel Assemblies ◽  
Htgr Fuel

Methods and results of an investigation of the distribution of solid fission products in HTGR fuel elements

Atomic Energy ◽  
1992 ◽  
Vol 73 (2) ◽  
pp. 612-617
Author(s):  
A. I. Deryugin ◽  
A. S. Chernikov ◽  
B. P. Kolesnikov ◽  
K. N. Koshcheev ◽  
A. D. Kurepin
Keyword(s):  
Fission Products ◽  
Fuel Elements ◽  
Htgr Fuel

scholarly journals Distribution of fission products in Peach Bottom HTGR fuel element E11-07

1977 ◽  
Author(s):  
R.P. Wichner ◽  
F.F. Dyer ◽  
W.J. Martin ◽  
L.C. Bate
Keyword(s):  
Fuel Element ◽  
Fission Products ◽  
Htgr Fuel

scholarly journals Distribution of fission products in Peach Bottom HTGR fuel element E14-01

1977 ◽  
Author(s):  
R.P. Wichner ◽  
F.F. Dyer ◽  
W.J. Martin ◽  
L.L. Fairchild
Keyword(s):  
Fuel Element ◽  
Fission Products ◽  
Htgr Fuel

scholarly journals Distribution of fission products in Peach Bottom HTGR fuel element F03-01

1978 ◽  
Author(s):  
F.F. Dyer ◽  
R.P. Wichner ◽  
W.J. Martin ◽  
L.L. Fairchild
Keyword(s):  
Fuel Element ◽  
Fission Products ◽  
Htgr Fuel
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