Release behaviors of elements from an Ag-In-Cd control rod alloy at temperatures up to 1673 K

Nagase, Fumihisa; Otomo, Takashi; Uetsuka, Hiroshi*

Nuclear Technology, 208(3), p.484 - 493, 2022/03

https://doi.org/10.1080/00295450.2021.1905472

An Ag-In-Cd control rod alloy was heated in argon or oxygen at 1073-1673 K for 60-3600 s and the release behavior of the elements was examined. Complete liquefaction of the alloy occurred between 1123 and 1173 K, and elemental release was quite limited below the liquefaction temperature. In argon, almost all of the Cd content was released within 3600 s at 1173 K and within 60 s at 1573 K, while the released fractions of Ag and In were 3% and 8%, respectively. In oxygen, the release of Cd, which was quite small at temperatures up to 1573 K, drastically increased to 30-50% at 1673 K for short periods. Releases of Ag and In were also small in oxygen under the examined conditions. Comparison with the experimental data suggests that conventional empirical release models may underestimate the Cd release at lower temperatures just after control rod failure in severe accidents.

A Development of a database system for the released radioactive gases and liquid from the nuclear facilities

Kikuchi, Masamitsu; Taki, Mitsumasa; Kume, Etsuo; Kobayashi, Hideo*; Yamada, Toshio*; Yamaguchi, Takenori

JAERI-Data/Code 2004-006, 146 Pages, 2004/03

JAERI-Data-Code-2004-006.pdf:6.87MB

The nuclear facilities, which are required to control the released radioactive gases and liquid, exist in Tokai research establishment as much as 40. These radioactive controls are carried out complying with the statutes in each facility. The released radioactivity data of each facility must be reported to MEXT and Ibaraki Prefecture from Tokai Research Establishment. This system is developed to make the database gathering the radioactivity data of each facilities for unitary control as Tokai Research Establishment and contribute to make the reports to MEXT and Ibaraki Prefecture.

New biodegradable polymers of L-lactic acid and aromatic hydroxy acids and their applications in drug delivery systems

; Yoshida, Masaru; ; Asano, Masaharu; Kumakura, Minoru*; Mashimo, Toru*; Yamanaka, Hidetoshi*;

Int. J. Pharm., 81, p.31 - 38, 1992/00

https://doi.org/10.1016/0378-5173(92)90040-9

no abstracts in English

Effect of ionic interaction on the entrapping of drug into porous microspheres and drug release characteristics

; Hosoi, Fumio; ;

Chem.Pharm.Bull., 35(5), p.2045 - 2051, 1987/05

https://doi.org/10.1248/cpb.35.2045

no abstracts in English

Controlled drug dissolution by radiation-induced polymerization in the presence of dimethylaminoethyl methacrylate-methyl methacrylate copolymer or methacrylic acid-methyl acrylate copolymer

; ; Kaetsu, Isao

J.Pharm.Sci., 68(7), p.860 - 862, 1979/00

https://doi.org/10.1002/jps.2600680719

no abstracts in English