We use contamination monitors with gas (P-10) detectors. I have seen I-125 implants alarm the waist area detectors after 18 months. The implants did not alarm the portal monitors due to the metal casing.
Curt Nason Point Lepreau ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: October 07, 2010 1:03 PM To: [email protected] Subject: Powernet: Anyone have experience with I-125 brachytherapy and monitor response? 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]> This e-mail communication (including any or all attachments) is intended only for the use of the person or entity to which it is addressed and may contain confidential and/or privileged material. If you are not the intended recipient of this e-mail, any use, review, retransmission, distribution, dissemination, copying, printing, or other use of, or taking of any action in reliance upon this e-mail, is strictly prohibited. If you have received this e-mail in error, please contact the sender and delete the original and any copy of this e-mail and any printout thereof, immediately. Your co-operation is appreciated. Le present courriel (y compris toute piece jointe) s'adresse uniquement a son destinataire, qu'il soit une personne ou un organisme, et pourrait comporter des renseignements privilegies ou confidentiels. Si vous n'etes pas le destinataire du courriel, il est interdit d'utiliser, de revoir, de retransmettre, de distribuer, de disseminer, de copier ou d'imprimer ce courriel, d'agir en vous y fiant ou de vous en servir de toute autre facon. Si vous avez recu le present courriel par erreur, priere de communiquer avec l'expediteur et d'eliminer l'original du courriel, ainsi que toute copie electronique ou imprimee de celui-ci, immediatement. Nous sommes reconnaissants de votre collaboration.
