Experimental study on new monitoring method of radon release rate from uranium tailings

Two new monitoring methods of radon release rate from uranium tailings are introduced. They are the active carbon absorption and gamma energy spectrum method. The instrument and sampler of active carbon absorption is presented with the manufacture, function, performance and calibration, the conditional test of the method and its measuring contrast to that of local static method. One-year continuous in-site monitoring of radon release rate of uranium tailings was done. The annual change regularity of radon release rate from uranium tailings was observed. The optimum season and condition of monitoring the annual average radon release rate are summarized. The parameter monitoring, calculating method and experimentation of gamma energy spectrum method is discussed