Detection of low level gaseous releases and dose evaluation from continuous gamma dose measurements using a wavelet transformation technique

► Environmental dose in the vicinity of Tarapur nuclear power plant is estimated using gamma radiation monitoring data. ► Four-year continuous data with six different dose monitoring systems placed at 1 m height from the ground were analyzed. ► Wavelet based algorithm was developed for evaluating location specific background. ► Wavelet based algorithm was used for the precise detection of FPNG event superimposed on large ambient background. ► Results obtained with wavelet methods were compared with dispersion model estimates.