We have a welder coming for our outage who has been treated for prostate cancer with ~30 millicuries of I-125 brachytherapy seeds. I-125 emits very low energy gammas, predominately 28 keV. He should be down to about 15 millicuries right now and we wonder if the NaI detectors in the Whole Body Contamination Monitors will see those gammas or if the energy discrimination (for which we don't have any data) and will eliminate them. Does anyone have any useful experience with I-125 and detectability by WBCM's and portal monitors? We have to decide very quickly whether to let this guy fly here for work. Thanks, Eric
Eric M. Goldin, CHP Southern California Edison <[email protected]>
