Performance of fuel failure detection system for coated particle fuels

Journal Article · Mon Apr 01 04:00:00 EST 1985 · IEEE Trans. Nucl. Sci.; (United States)

DOI:https://doi.org/10.1109/TNS.1985.4333576· OSTI ID:5985686

Treada, H; Ohkawa, H; Ohlsu, H; Wakayama, N; Yoshida, H

An experimental system was developed for a study of fuel failure detection (FFD) method for coated particle fuels (CPF's) of a high-temperature gas-cooled reactor. Various performance of the FFD-system were examined using a CPF-irradiation rig in the Japan Material Testing Reactor. By experiments, it was made sure that the counting rates of fission products (FP's), released from the CPF's, change with the reactor-power and the fuel-temperature remarkably even during the normal reactor operation. Also, an ability of the selective detection of only short-life FP-nuclides was studied in relation to the travelling time of the sampling gas. The results showed that the contributions of the short-life FP-nuclides such as Kr-89 and Kr-90 are more than 80 percent to the total FP-counting rate at the shortest travelling time of 120 sec. It is concluded that the selective detection of only the short-life FP-nuclides can be realized by controlling the travelling time properly.

• Research Organization: Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken
• OSTI ID: 5985686
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. NS-32:2; ISSN IETNA
• Country of Publication: United States
• Language: English

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