Abstract
Hydrogen diffusion behavior in a cesium adsorption vessel is assessed. The vessel is used to remove radioactive substance from contaminated water, which is proceeded from Fukushima accident. Experiment and numerical calculation are conducted to clarify the characteristics of natural circulation in the vessel. The natural circulation arising from the temperature difference between inside and outside the vessel is confirmed. We develop an evaluation model to predict the natural circulation and its prediction agrees well with the results obtained by the experiment and the calculation. Using the model, we predict steady and transient behavior of hydrogen concentration. Results indicate that hydrogen concentration is kept lower than the flammability limit when the short vent pipe is open.
| Original language | English |
|---|---|
| Pages (from-to) | 916-929 |
| Number of pages | 14 |
| Journal | Journal of Nuclear Science and Technology |
| Volume | 51 |
| Issue number | 7-8 |
| DOIs | |
| Publication status | Published - 2014 Aug 3 |
| Externally published | Yes |
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Keywords
- adsorption
- calculation
- cesium
- CFD
- contaminated water
- experiment
- Hydrogen
- natural circulation
- radioactive waste
- zeolite
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
Cite this
Early construction and operation of the highly contaminated water treatment system in Fukushima Daiichi Nuclear Power Station (IV) - Assessment of hydrogen behavior in stored Cs adsorption vessel. / Kondo, Masahiro; Arai, Takahiro; Nishi, Yoshihisa; Furuya, Masahiro; Kanai, Taizou; Morita, Ryo; Uchiyama, Yuta; Satake, Masaaki; Shirakawa, Kenetsu; Nauchi, Yasushi; Koyama, Tadafumi; Ishikawa, Keiji; Suzuki, Shunichi.
In: Journal of Nuclear Science and Technology, Vol. 51, No. 7-8, 03.08.2014, p. 916-929.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Early construction and operation of the highly contaminated water treatment system in Fukushima Daiichi Nuclear Power Station (IV) - Assessment of hydrogen behavior in stored Cs adsorption vessel
AU - Kondo, Masahiro
AU - Arai, Takahiro
AU - Nishi, Yoshihisa
AU - Furuya, Masahiro
AU - Kanai, Taizou
AU - Morita, Ryo
AU - Uchiyama, Yuta
AU - Satake, Masaaki
AU - Shirakawa, Kenetsu
AU - Nauchi, Yasushi
AU - Koyama, Tadafumi
AU - Ishikawa, Keiji
AU - Suzuki, Shunichi
PY - 2014/8/3
Y1 - 2014/8/3
N2 - Hydrogen diffusion behavior in a cesium adsorption vessel is assessed. The vessel is used to remove radioactive substance from contaminated water, which is proceeded from Fukushima accident. Experiment and numerical calculation are conducted to clarify the characteristics of natural circulation in the vessel. The natural circulation arising from the temperature difference between inside and outside the vessel is confirmed. We develop an evaluation model to predict the natural circulation and its prediction agrees well with the results obtained by the experiment and the calculation. Using the model, we predict steady and transient behavior of hydrogen concentration. Results indicate that hydrogen concentration is kept lower than the flammability limit when the short vent pipe is open.
AB - Hydrogen diffusion behavior in a cesium adsorption vessel is assessed. The vessel is used to remove radioactive substance from contaminated water, which is proceeded from Fukushima accident. Experiment and numerical calculation are conducted to clarify the characteristics of natural circulation in the vessel. The natural circulation arising from the temperature difference between inside and outside the vessel is confirmed. We develop an evaluation model to predict the natural circulation and its prediction agrees well with the results obtained by the experiment and the calculation. Using the model, we predict steady and transient behavior of hydrogen concentration. Results indicate that hydrogen concentration is kept lower than the flammability limit when the short vent pipe is open.
KW - adsorption
KW - calculation
KW - cesium
KW - CFD
KW - contaminated water
KW - experiment
KW - Hydrogen
KW - natural circulation
KW - radioactive waste
KW - zeolite
UR - http://www.scopus.com/inward/record.url?scp=84903183682&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84903183682&partnerID=8YFLogxK
U2 - 10.1080/00223131.2014.921581
DO - 10.1080/00223131.2014.921581
M3 - Article
AN - SCOPUS:84903183682
VL - 51
SP - 916
EP - 929
JO - Journal of Nuclear Science and Technology
JF - Journal of Nuclear Science and Technology
SN - 0022-3131
IS - 7-8
ER -