Properties Influencing High-Temperature Gas-Cooled Reactor Coated Fuel Particle Performance

1977 ◽  
Vol 35 (2) ◽  
pp. 343-352 ◽  
Author(s):  
D. P. Harmon ◽  
C. B. Scott
Keyword(s):  
High Temperature ◽  
Fuel Particle ◽  
Coated Fuel Particle ◽  
High Temperature Gas

Behavior of Coated Fuel Particle of High-Temperature Gas-Cooled Reactor under Reactivity-Initiated Accident Conditions

2010 ◽  
Vol 47 (11) ◽  
pp. 991-997 ◽  
Author(s):  
Miki UMEDA ◽  
Tomoyuki SUGIYAMA ◽  
Fumihisa NAGASE ◽  
Toyoshi FUKETA ◽  
Shohei UETA ◽  
...  
Keyword(s):  
High Temperature ◽  
Fuel Particle ◽  
Accident Conditions ◽  
Coated Fuel Particle ◽  
High Temperature Gas

Comparative Study of Coated Particle Stresses With Different Coating Layer Performance

2016 ◽  
Author(s):  
Rong Li ◽  
Bing Liu ◽  
Chunhe Tang
Keyword(s):  
Coating Layer ◽  
Fuel Particle ◽  
Reactor Irradiation ◽  
Coated Particle ◽  
Shrinkage And Creep ◽  
Fuel Design ◽  
Fuel Behavior ◽  
Coated Fuel Particle ◽  
High Temperature Gas ◽  
Good Agreement

Tristructural-isotropic coated fuel particle is an important fuel design for high-temperature gas-cooled reactor. Irradiation-induced pyrocarbon (PyC) shrinkage and creep behavior will affect greatly the stresses of a TRISO-coated particle. In this study, 5 cases under different conditions by analytical solution were studied to calculate the particle stresses with different fuel behavior. These cases varied in particle geometries, the mount of gas pressure or fuel behavior. A comparison between the results and other benchmarking studies among different codes was made. The results indicated that the calculated results in this study were in good agreement with other codes.

Failure Mechanisms of Fuel Particle Coating for High-Temperature Gas-Cooled Reactors during the Coating Processes

1995 ◽  
Vol 111 (2) ◽  
pp. 260-269 ◽  
Author(s):  
Kazuo Minato ◽  
Hironobu Kikuchi ◽  
Kousaku Fukuda ◽  
Nobuyuki Suzuki ◽  
Hiroshi Tomimoto ◽  
...  
Keyword(s):  
High Temperature ◽  
Failure Mechanisms ◽  
Fuel Particle ◽  
Particle Coating ◽  
High Temperature Gas

Evaluation of Mechanical Properties of Graphite Layers on a Nuclear Fuel Particle by Kinetic Nano-Indentation Technique

2007 ◽  
Vol 345-346 ◽  
pp. 1177-1180 ◽  
Author(s):  
K.S. Choi ◽  
Y. Choi ◽  
Bong Goo Kim ◽  
Y.W. Lee
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Fuel Particle ◽  
Small Specimen ◽  
Indentation Method ◽  
Nano Indentation ◽  
Indentation Technique ◽  
Simple Geometry ◽  
Kinetic Indentation ◽  
High Temperature Gas

Small specimen with simple geometry has advantage for irradiation tests because the tests have limits for experiments and nuclear wastes after irradiation tests. In this study, a kinetic indentation technique is applied to evaluate mechanical properties of coated layers of a particle fuel of a high temperature gas cooled reactor. Hardness of buffer, IPyC and OPyC are 0.55, 0.874 and 2.726 GPa, respectively. The density, strength and friction coefficient estimated by kinetic indentation method are 1.08, 1.15 and 1.81 g/cm3, and 174, 291 and 606 MPa, and 0.51, 0.45 and 0.4, respectively.

Fabrication of uniform ZrC coating layer for the coated fuel particle of the very high temperature reactor

2008 ◽  
Vol 376 (2) ◽  
pp. 146-151 ◽  
Author(s):  
Shohei Ueta ◽  
Jun Aihara ◽  
Atsushi Yasuda ◽  
Hideharu Ishibashi ◽  
Tomoo Takayama ◽  
...  
Keyword(s):  
High Temperature ◽  
Coating Layer ◽  
Fuel Particle ◽  
Very High Temperature Reactor ◽  
High Temperature Reactor ◽  
Coated Fuel Particle ◽  
Zrc Coating ◽  
Very High

In-Line Monitoring of Effluents from High-Temperature Gas-Cooled Reactor Fuel Particle Preparation Processes by Mass Spectrometry

1977 ◽  
Vol 34 (1) ◽  
pp. 89-97 ◽  
Author(s):  
D. A. Lee ◽  
D. A. Constanzo ◽  
D. P. Stinton ◽  
J. A. Carpenter ◽  
W. T. Rainey ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Temperature ◽  
Reactor Fuel ◽  
Fuel Particle ◽  
Particle Preparation ◽  
High Temperature Gas

The Study on Pyrolytic Carbon Powder in the Coating Process of Fuel Particle for High-Temperature Gas-Cooled Reactor

2010 ◽  
Author(s):  
Malin Liu ◽  
Bing Liu ◽  
Youlin Shao
Keyword(s):  
High Temperature ◽  
Carbon Black ◽  
Pyrolytic Carbon ◽  
Nano Particles ◽  
Carbon Powder ◽  
Fuel Particle ◽  
Coating Process ◽  
Black Powder ◽  
Carbon Black Powder ◽  
High Temperature Gas

The R&D of coating process of fuel particles is one of the most important key technologies in the research work of high-temperature gas-cooled reactor (HTGR). A safe and reliable coating process is expected and related to the prospect of large-scale utilization of nuclear energy. The related research of the carbon black powder which is the main byproduct generated in the coating process is important, because it relates to the impact of coating process on the surrounding environment and is also helpful to understand the deposit mechanism of PyC (pyrolytic carbon) layer coated on the fuel particle. In the present study, the microstructure of the pyrolytic carbon powder were systematically investigated by scanning electron microscope (SEM), transmission electron microscopy (TEM), laser Raman spectroscopy and particle size analysis (PSA). It can be found that the carbon powder in the cyclone separator is composed of the nano-spherical particles with the diameter of about 50nm. The ring-layered nano-structured carbon particles could be found from the electron micrographs. The comparison between Raman spectra of carbon powder and pyrolytic carbon coated on the fuel particle showed that the droplet deposit mechanism was suitable to explain the PyC deposition process. The nano-particles agglomerate into the irregular floc and the diameters of the stable particle clusters are mainly 1 μm and 10 μm. The disposal methods of carbon black powder are also discussed.

scholarly journals Effect of Heat Treatment on TEM Microstructures of Zirconium Carbide Coating Layer in Fuel Particle for Advanced High Temperature Gas Cooled Reactor

2009 ◽  
Vol 50 (11) ◽  
pp. 2631-2636 ◽  
Author(s):  
Jun Aihara ◽  
Shohei Ueta ◽  
Atsushi Yasuda ◽  
Hitoshi Takeuchi ◽  
Yasuhiro Mozumi ◽  
...  
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Coating Layer ◽  
Zirconium Carbide ◽  
Fuel Particle ◽  
Carbide Coating ◽  
High Temperature Gas

An Environmental Wet Cell For High Voltage Electron Microscopy

1973 ◽  
Vol 31 ◽  
pp. 18-19
Author(s):  
N.J. Tighe ◽  
H.M. Flower ◽  
P.R. Swann
Keyword(s):  
Electron Microscopy ◽  
High Temperature ◽  
Image Quality ◽  
Inelastic Scattering ◽  
High Voltage ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
Environmental Cell ◽  
Water Saturated ◽  
High Temperature Gas

A differentially pumped environmental cell has been developed for use in the AEI EM7 million volt microscope. In the initial version the column of gas traversed by the beam was 5.5mm. This permited inclusion of a tilting hot stage in the cell for investigating high temperature gas-specimen reactions. In order to examine specimens in the wet state it was found that a pressure of approximately 400 torr of water saturated helium was needed around the specimen to prevent dehydration. Inelastic scattering by the water resulted in a sharp loss of image quality. Therefore a modified cell with an ‘airgap’ of only 1.5mm has been constructed. The shorter electron path through the gas permits examination of specimens at the necessary pressure of moist helium; the specimen can still be tilted about the side entry rod axis by ±7°C to obtain stereopairs.

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