Residence time of crud on surfaces of channel box in JPDR.
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概要
- 論文の詳細を見る
Characterization of crud on surfaces of the channel box in JPDR has been carried out by means of chemical, radiochemical, X-ray diffraction and infrared spectrum analyses. The main cations in the crud are Fe and Ni: The sum of their weights amounts to more than 90% of the total weight of the cations found. The results of X-ray diffraction and infrared spectrum analyses revealed that the crud consisted of Ni<SUB>0.65</SUB>Fe<SUB>2.35</SUB>O<SUB>4</SUB>, NiO and γ-FeOOH.<BR>Based on the neutron flux calculated from the burn-up of <SUP>235</SUP>U and <SUP>238</SUP>U in the spent fuel, the apparent residence time of elements on the surface of the channel box was calculated to be 230 d for Co, 260 d for Ni and 70 d for Fe. The value for Fe should be taken as a minimum value, because of the presence of γ-FeOOH in the crud, which has been formed during the storage in a pond.<BR>The present data are discussed in correlation with the one in the reactor water.
- 一般社団法人 日本原子力学会の論文
著者
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GOTO Satoshi
Tokai Research Establishment, Japan Atomic Energy Research Institute
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HOSHI Michio
Tokai Research Establishment, Japan Atomic Energy Research Institute
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TACHIKAWA Enzo
Tokai Research Establishment, Japan Atomic Energy Research Institute
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SUWA Takeshi
Tokai Research Establishment, Japan Atomic Energy Research Institute
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SAGAWA Chiaki
Tokai Research Establishment, Japan Atomic Energy Research Institute
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YONEZAWA Chushiro
Tokai Research Establishment, Japan Atomic Energy Research Institute
関連論文
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- Residence time of crud on surfaces of channel box in JPDR.
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- Crud behaviors in high-temperature water. (III) Chemical form of cobalt-60 in JMTR OWL-1 loop water.