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

Journal Article:

Abstract

Postirradiation heating tests of TRISO-coated UO{sub 2} particles at 1700 and 1800degC were performed to understand fission product release behavior at accident temperatures. The inventory measurements of the individual particles were carried out before and after the heating tests with gamma-ray spectrometry to study the behavior of the individual particles. The time-dependent release behavior of {sup 85}Kr, {sup 110m}Ag, {sup 134}Cs, {sup 137}Cs, and {sup 154}Eu were obtained with on-line measurements of fission gas release and intermittent measurements of metallic fission product release during the heating tests. The inventory measurements of the individual particles revealed that fission product release behavior of the individual particles was not uniform, and large particle-to-particle variations in the release behavior of {sup 110m}Ag, {sup 134}Cs, {sup 137}Cs, and {sup 154}Eu were found. X-ray microradiography and ceramography showed that the variations could not be explained by only the presence or absence of cracks in the SiC coating layer. The SiC degradation may have been related to the variations.
Authors:
Minato, Kazuo; [1]  Sawa, Kazuhiro; [1]  Koya, Toshio; [1]  Tomita, Takeshi; [1]  Ishikawa, Akiyoshi; [1]  Baldwin, Charles A; Gabbard, William Alexander; [2]  Malone, Charlie M [2] 
  1. Japan Atomic Energy Research Institute (Japan)
  2. Oak Ridge National Laboratory (United States)
Publication Date:
Jul 15, 2000
Product Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Technology; Journal Volume: 131; Journal Issue: 1; Other Information: Copyright (c) 2006 American Nuclear Society (ANS), United States, All rights reserved. http://epubs.ans.org/; Country of input: International Atomic Energy Agency (IAEA)
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; ACCIDENTS; CERAMOGRAPHY; CESIUM 134; CESIUM 137; COATED FUEL PARTICLES; CRACKS; EUROPIUM 154; FISSION PRODUCT RELEASE; GAMMA SPECTROSCOPY; HEATING; HTGR TYPE REACTORS; INVENTORIES; KRYPTON 85; MICRORADIOGRAPHY; SILVER 110; TIME DEPENDENCE; URANIUM DIOXIDE
OSTI ID:
20822178
Country of Origin:
United States
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0029-5450; NUTYBB; TRN: US06N0524121183
Submitting Site:
INIS
Size:
page(s) 36-47
Announcement Date:
Dec 30, 2006

Journal Article:

Citation Formats

Minato, Kazuo, Sawa, Kazuhiro, Koya, Toshio, Tomita, Takeshi, Ishikawa, Akiyoshi, Baldwin, Charles A, Gabbard, William Alexander, and Malone, Charlie M. Fission Product Release Behavior of Individual Coated Fuel Particles for High-Temperature Gas-Cooled Reactors. United States: N. p., 2000. Web.
Minato, Kazuo, Sawa, Kazuhiro, Koya, Toshio, Tomita, Takeshi, Ishikawa, Akiyoshi, Baldwin, Charles A, Gabbard, William Alexander, & Malone, Charlie M. Fission Product Release Behavior of Individual Coated Fuel Particles for High-Temperature Gas-Cooled Reactors. United States.
Minato, Kazuo, Sawa, Kazuhiro, Koya, Toshio, Tomita, Takeshi, Ishikawa, Akiyoshi, Baldwin, Charles A, Gabbard, William Alexander, and Malone, Charlie M. 2000. "Fission Product Release Behavior of Individual Coated Fuel Particles for High-Temperature Gas-Cooled Reactors." United States.
@misc{etde_20822178,
title = {Fission Product Release Behavior of Individual Coated Fuel Particles for High-Temperature Gas-Cooled Reactors}
author = {Minato, Kazuo, Sawa, Kazuhiro, Koya, Toshio, Tomita, Takeshi, Ishikawa, Akiyoshi, Baldwin, Charles A, Gabbard, William Alexander, and Malone, Charlie M}
abstractNote = {Postirradiation heating tests of TRISO-coated UO{sub 2} particles at 1700 and 1800degC were performed to understand fission product release behavior at accident temperatures. The inventory measurements of the individual particles were carried out before and after the heating tests with gamma-ray spectrometry to study the behavior of the individual particles. The time-dependent release behavior of {sup 85}Kr, {sup 110m}Ag, {sup 134}Cs, {sup 137}Cs, and {sup 154}Eu were obtained with on-line measurements of fission gas release and intermittent measurements of metallic fission product release during the heating tests. The inventory measurements of the individual particles revealed that fission product release behavior of the individual particles was not uniform, and large particle-to-particle variations in the release behavior of {sup 110m}Ag, {sup 134}Cs, {sup 137}Cs, and {sup 154}Eu were found. X-ray microradiography and ceramography showed that the variations could not be explained by only the presence or absence of cracks in the SiC coating layer. The SiC degradation may have been related to the variations.}
journal = {Nuclear Technology}
issue = {1}
volume = {131}
place = {United States}
year = {2000}
month = {Jul}
}