Explosion hazards of ion exchange resin mixed with perchloric acid |
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| Authors: | Ken Okada Miyako Akiyoshi Atsumi Miyake Terushige Ogawa Mitsuo Nomura Takehiro Matsunaga |
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| Affiliation: | (1) Research Core for Explosion Safety (ESCORE), National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan;(2) Graduate School of Environment and Information Science, Yokohama National University, Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan;(3) Ningyo-toge Environmental Engineering Center, Japan Atomic Energy Agency (JAEA), 1550 Kamisaibara, Kagamino-cho, Tomata-gun, Okayama 708-0698, Japan |
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| Abstract: | On January 21, 2003, an explosion occurred while ion exchange resin (IER) was being used to separate impurities from uranium solution. To clarify the cause of the accident and go/no-go criteria of the explosion, elemental analysis of the IER, DSC analysis, and SIKAREX analysis (a screening tool for runaway reactions) were performed. Finally, experiments on the same scale as the accident were conducted in an explosion chamber. When HClO4 was added to IER-NO3, the IER violently exploded without any heating nor metal ions such as uranium. It was confirmed that the accident was caused by an incorrect procedure in the chemical process. From the standpoint of explosion safety, IER-NO3 in particular should be kept away from perchloric acid in the laboratory. |
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