Abstract
An experimental research on fission product release from Light Water Reactor (LWR) fuels under accident conditions at high temperatures is planned and being prepared in Japan Atomic Energy Research Institute (JAERI), which is important for evaluating the impacts of the design base events and the severe accidents of the LWRs. Short segments of irradiated LWR fuels will be induction-heated in the tests. The release behavior of the fission products is going to be studied as a function of temperature under various atmospheres. Very stable material is required for the induction furnace which stands for high temperatures exceeding 2800 degC under oxidizing or reducing atmospheres. Thorium dioxide (Thoria) which has a very high melting point of 3370 degC and chemically stable at high temperatures is a strong candidate. However, because thorium is controlled by the government as nuclear fuel material, experiences of fabricating thoria components are very limited except for the uses as the nuclear fuels. Fabrication tests of thoria tubes from thoria powder were conducted to clarify the fabrication parameters. A thoria tube of outer diameter of about 35mm, inner diameter of about 24mm, length of about 145mm at density of about 90% to the theoretical, was successfully fabricated from
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Nakamura, Takehiko;
Hashimoto, Kazuichiro;
Uetsuka, Hiroshi;
Nishino, Yasuharu;
[1]
Suzuki, Nobuyuki
- Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment
Citation Formats
Nakamura, Takehiko, Hashimoto, Kazuichiro, Uetsuka, Hiroshi, Nishino, Yasuharu, and Suzuki, Nobuyuki.
Fabrication test of thoria tube.
Japan: N. p.,
1993.
Web.
Nakamura, Takehiko, Hashimoto, Kazuichiro, Uetsuka, Hiroshi, Nishino, Yasuharu, & Suzuki, Nobuyuki.
Fabrication test of thoria tube.
Japan.
Nakamura, Takehiko, Hashimoto, Kazuichiro, Uetsuka, Hiroshi, Nishino, Yasuharu, and Suzuki, Nobuyuki.
1993.
"Fabrication test of thoria tube."
Japan.
@misc{etde_10132081,
title = {Fabrication test of thoria tube}
author = {Nakamura, Takehiko, Hashimoto, Kazuichiro, Uetsuka, Hiroshi, Nishino, Yasuharu, and Suzuki, Nobuyuki}
abstractNote = {An experimental research on fission product release from Light Water Reactor (LWR) fuels under accident conditions at high temperatures is planned and being prepared in Japan Atomic Energy Research Institute (JAERI), which is important for evaluating the impacts of the design base events and the severe accidents of the LWRs. Short segments of irradiated LWR fuels will be induction-heated in the tests. The release behavior of the fission products is going to be studied as a function of temperature under various atmospheres. Very stable material is required for the induction furnace which stands for high temperatures exceeding 2800 degC under oxidizing or reducing atmospheres. Thorium dioxide (Thoria) which has a very high melting point of 3370 degC and chemically stable at high temperatures is a strong candidate. However, because thorium is controlled by the government as nuclear fuel material, experiences of fabricating thoria components are very limited except for the uses as the nuclear fuels. Fabrication tests of thoria tubes from thoria powder were conducted to clarify the fabrication parameters. A thoria tube of outer diameter of about 35mm, inner diameter of about 24mm, length of about 145mm at density of about 90% to the theoretical, was successfully fabricated from the powder by rubber pressing and sintering. (author).}
place = {Japan}
year = {1993}
month = {Nov}
}
title = {Fabrication test of thoria tube}
author = {Nakamura, Takehiko, Hashimoto, Kazuichiro, Uetsuka, Hiroshi, Nishino, Yasuharu, and Suzuki, Nobuyuki}
abstractNote = {An experimental research on fission product release from Light Water Reactor (LWR) fuels under accident conditions at high temperatures is planned and being prepared in Japan Atomic Energy Research Institute (JAERI), which is important for evaluating the impacts of the design base events and the severe accidents of the LWRs. Short segments of irradiated LWR fuels will be induction-heated in the tests. The release behavior of the fission products is going to be studied as a function of temperature under various atmospheres. Very stable material is required for the induction furnace which stands for high temperatures exceeding 2800 degC under oxidizing or reducing atmospheres. Thorium dioxide (Thoria) which has a very high melting point of 3370 degC and chemically stable at high temperatures is a strong candidate. However, because thorium is controlled by the government as nuclear fuel material, experiences of fabricating thoria components are very limited except for the uses as the nuclear fuels. Fabrication tests of thoria tubes from thoria powder were conducted to clarify the fabrication parameters. A thoria tube of outer diameter of about 35mm, inner diameter of about 24mm, length of about 145mm at density of about 90% to the theoretical, was successfully fabricated from the powder by rubber pressing and sintering. (author).}
place = {Japan}
year = {1993}
month = {Nov}
}