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Report No.

Effects of boron on revaporization of iodine and cesium compounds in a severe accident condition

Miwa, Shuhei ; Shinada, Masanori; Osaka, Masahiko ; Sugiyama, Tomoyuki ; Maruyama, Yu 

In order to acquire the data on fission product chemical behavior during transport in a reactor for the improvement of source term evaluation method, we performed the chemical reaction tests of cesium (Cs) and iodine (I) deposits and boron oxide (B$$_{2}$$O$$_{3}$$) vapor/aerosol using the apparatus which can simulate temperature conditions of reactor coolant system under a sever accident. The volatile I compounds were formed by the reaction of B$$_{2}$$O$$_{3}$$ vapor/aerosol and deposit, and significant amount of I was revaporized from the deposit.



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