We have had two such workers, one of which was just recently able to clear our monitors. We can detect this on our whole body counter if we lower the energy window. I talked with the worker who most recently was able to clear the monitors - he got the implants in 2008. He couldn't clear the monitors for just days shy of 2 years. The other worker couldn't clear for a similar time, but this was a while ago and we can't recall an exact duration.
We don't know the quantity of iodine administered, so your experience may be different. John Lebda Beaver Valley Power Station [email protected] [email protected] om Sent by: To owner-power...@hp [email protected] s1.org cc Subject 10/07/2010 12:02 Powernet: Anyone have experience PM with I-125 brachytherapy and monitor response? Please respond to [email protected] 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]> ----------------------------------------- The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message. ----------------------------------- Powernet - a service of the Health Physics Society Power Reactor Section Powernet archives at http://www.mail-archive.com/[email protected]/ Reply to: [email protected] If Questions, contact Mike Russell, CHP at [email protected]
