This experimental study has been performed to obtain fundamental data for in situ tests of activated charcoal filters installed in reactor exhaust systems using "R-112" as a tracer.
The results have shown that the leakage flow less than 0.1% by channelings around gasket seals and the defects caused by settling in activated charcoal filters could be evaluated by analyzing the "R-112" adsorption efficiency curves. Moreover, it was found that the very high adsorption of "R-112" tracer on activated charcoal (more than 99.995%) was not affected by in situ test conditions such as temperature, humidity, flow velocity. These results agreed with those determined by the theoretical calculation, assuming that mass transfer through a gas film was the controlling factor in adsorption of "R-112" by activated charcoal.
