Evaluation of FP chemistry under sever accident conditions with focuses on the effects of BWR control material, 4; Development of experimental technique for analysis FP aerosol using cascade impactor

Takai, Toshihide  ; Sato, Isamu; Yamashita, Shinichiro   ; Furukawa, Tomohiro  ; Osaka, Masahiko  

Property evaluation methods of aerosol, which was released from the simulated FP release test apparatus, were considered, as part of the direct measurement technique of FP's chemical form. It is important to prevent thermal flow from having an effect by installing instruments, for evaluating aerosol property (chemical form, particle diameter distribution, and shape) under simulated severe accident conditions correctly. A low flow cascade impactor with a gas flow control system was installed to the test apparatus, and applicability for aerosol property evaluation was confirmed by heating test using simulated CsI.