Determination of chemical forms of H released to the atmosphere from the Tokai Reprocessing Plant

Koarashi, Jun   ; Mikami, Satoshi   ; Akiyama, Kiyomitsu; Asano, Tomohiro

A method using a system with two sampling units was proposed to determine the chemical forms of tritium released into the atmosphere from the Tokai Reprocessing Plant (TRP). The main advantage of the method is that no carrier gas is required for sampling in the case that air to be sampled has high specific activity of tritiated hydrogen (HT). Obserbations using this method showed that 19.1-28.3% of totak airborne tritium was released as HT from the TRP during reprocessing operation. No clear relationship was found between the ratios of HT release and the types of spent fuels reprocessed.