Fission Product Release Behavior of Individual Coated Fuel Particles for High-Temperature Gas-Cooled Reactors

2000 ◽  
Vol 131 (1) ◽  
pp. 36-47 ◽  
Author(s):  
Kazuo Minato ◽  
Kazuhiro Sawa ◽  
Toshio Koya ◽  
Takeshi Tomita ◽  
Akiyoshi Ishikawa ◽  
...  
Keyword(s):  
High Temperature ◽  
Fission Product ◽  
Release Behavior ◽  
Product Release ◽  
Fuel Particles ◽  
High Temperature Gas

Retention of fission product caesium in ZrC-coated fuel particles for high-temperature gas-cooled reactors

2000 ◽  
Vol 279 (2-3) ◽  
pp. 181-188 ◽  
Author(s):  
Kazuo Minato ◽  
Toru Ogawa ◽  
Toshio Koya ◽  
Hajime Sekino ◽  
Takeshi Tomita
Keyword(s):  
High Temperature ◽  
Fission Product ◽  
Fuel Particles ◽  
High Temperature Gas

Study on Emergency Action Levels of the Modular High Temperature Gas-Cooled Reactor

2017 ◽  
Author(s):  
Xiaochuan Zang ◽  
Tao Liu
Keyword(s):  
High Temperature ◽  
Fission Product ◽  
Operating Mode ◽  
Inherent Safety ◽  
Pressurized Water ◽  
Plant Safety ◽  
Water Reactors ◽  
Safety Features ◽  
Action Levels ◽  
High Temperature Gas

The emergency action level (EAL) scheme for a modular high temperature gas-cooled reactor (HTR) plant refers to the generic EAL development guidance for pressurized water reactors (PWR) with HTR modification due to its design issues. Based on reactor’s accidents analysis and consequence assessment, EAL scheme of HTR is established through the steps of category and classification. Four emergency classes are set for HTR consisting of U (Emergency Standby), A (Facilities Emergency), S (Site Area Emergency) and G (General Emergency). The Recognition Category of Initiating Condition (IC) and EAL contains A - Abnormal Rad Levels / Radiological Effluent, F - Fission Product Barrier, H - Hazards and Other Conditions Affecting Plant Safety, S - System Malfunction. The methodology for development of EALs for HTR on Fission Product Barrier and System Malfunction has some differences from PWR’s due to differences on operating mode, inherent safety features and system characteristics.

Fission product release from ZrC-coated fuel particles during post-irradiation heating at 1800 and 2000°C

1997 ◽  
Vol 249 (2-3) ◽  
pp. 142-149 ◽  
Author(s):  
Kazuo Minato ◽  
Toru Ogawa ◽  
Kousaku Fukuda ◽  
Hajime Sekino ◽  
Isamu Kitagawa ◽  
...  
Keyword(s):  
Fission Product ◽  
Post Irradiation ◽  
Product Release ◽  
Fuel Particles

scholarly journals ICP-MS analysis of fission product diffusion in graphite for high-temperature gas-cooled reactors

2015 ◽  
Author(s):  
◽  
Lukas Michael Carter
Keyword(s):  
High Temperature ◽  
Fission Product ◽  
Diffusion Coefficients ◽  
Inductively Coupled Plasma ◽  
Nuclear Reactor ◽  
Fission Products ◽  
Release Rates ◽  
Inductively Coupled ◽  
Icp Ms ◽  
High Temperature Gas

High-temperature gas-cooled reactors (HTGRs) are one of the candidates being considered for the replacement of current nuclear reactor designs. Diffusion coefficients for fission products in HTGR graphite are required for estimation of fission product release rates from such reactors. We developed a method for analysis of fission product of fission product surrogate release rates from heated graphite samples. The graphite samples were infused with fission product surrogate material, and material which diffused from the graphite samples was transported via a carbon aerosol laden He jet system to an online inductively coupled plasma mass spectrometer for quantification of the release rate. Diffusion coefficients for cesium in IG-110 and NBG-18 grade nuclear graphites are reported.

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