Remote monitoring of emission activity level from NPP using radiofrequencies 1420, 1665, 1667Â MHz in real time

► We calculated the total EEDF for Ar41, Kr85, Xe133 and I131 released from an NPP. ► We estimated concentration of H and OH in the emission plume. ► We estimated the intensity of spontaneous emission of H and OH from emission plume. ► The radiant power at the 1420, 1665, 1667 MHz could be measured by radiometric complex. ► The method of remote radiation monitoring for NPP is proposed.