Home / Store / Journals / Electronic Articles / Nuclear Technology / Volume 172 / Number 1
Takashi Kodama, Masanao Nakano, Yoshiaki Hayashi, Shingo Matsuoka, Yasuo Ito, Chihiro Matsuura, Hirotsugu Shiraishi, Yousuke Katsumura
Volume 172 / Number 1 / October 2010 / Pages 77-87
Format:electronic copy (download)
It is well known that not all of the hydrogen formed in high-level liquid waste comes out in the gas phase because hydrogen is consumed by some unclarified secondary reaction. Using a simulated waste solution, it was found that the H2 consumption reaction is not caused by radiation as was thought but is caused by a catalytic effect of Pd ions, which suggests that the same reaction proceeds in actual solution. Using the catalytic reaction rate constant measured in the simulated solution, the analysis showed that the H2 concentration in the gas phase does not reach its explosion limit of 4% even if the sweeping air stops for a long time.
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