The first workshop was focused on the qualities of radiological detectors. Some experiments and linked calculations helped to define efficiency, directionality and sensitivity of equipments. Thus, use of sources with various radiations (nature and energy) permits to show which detector is adapted to each situation and radionuclide. Main learned lessons: The universal detector doesn’t exist. Don’t → believe certainty makers who said that their detector is able to detect all type of radiations in all situations. Gas ictometers are not fully adapted to → measure gammas rays. Prefer strong material detectors. Calculation board Detectors directionality evaluation Challenge of contamination inspection: Two teams had two inspect contamination of dummies. Using a two face board, they reported their results. At the end, the spots locations were compared. The step of decontamination (disrobing) Main learned lessons: it’s easy to said that a person is contaminated, → it’s less easy to said that he isn’t contaminated when there is only a low amount of contamination. in case of doubt, shorter distance may create → the difference. Decontamination: The CTIF members had the opportunity to follow the complete process of decontamination of dummies: - first inspection - disrobing - second inspection - washing - drying - good efficiency inspection A cost” shower was used. It is “low “do-it-yourself” disposable and may be consider as waste after use. This concept was developed for increase resiliency and reinforcement organization. Main learned lessons: In case of contamination on clothes, if you → have time (not during mass decontamination operation), fix it with adhesive tape before disrobing. You don’t need wonderful manufactured → decontamination unit to be efficient. Always define and → “dirty” “clean” decontaminators.
The first workshop was focused on the qualities of radiological detectors. Some experiments and linked calculations helped to define efficiency, directionality and sensitivity of equipments. Thus, use of sources with various radiations (nature and energy) permits to show which detector is adapted to each situation and radionuclide. Main learned lessons: → The universal detector doesn’t exist. Don’t believe certainty makers who said that their detector is able to detect all type of radiations in all situations. → Gas ictometers are not fully adapted to measure gammas rays. Prefer strong material detectors. Calculation board Detectors directionality evaluation Challenge of contamination inspection: Two teams had two inspect contamination of dummies. Using a two face board, they reported their results. At the end, the spots locations were compared. The step of decontamination (disrobing) Main learned lessons: → it’s easy to said that a person is contaminated, it’s less easy to said that he isn’t contaminated when there is only a low amount of contamination. → in case of doubt, shorter distance may create the difference. Decontamination: The CTIF members had the opportunity to follow the complete process of decontamination of dummies: - first inspection - disrobing - second inspection - washing - drying - good efficiency inspection A “low cost” “do-it-yourself” shower was used. It is disposable and may be consider as waste after use. This concept was developed for increase resiliency and reinforcement organization. Main learned lessons: → In case of contamination on clothes, if you have time (not during mass decontamination operation), fix it with adhesive tape before disrobing. → You don’t need wonderful manufactured decontamination unit to be efficient. → Always define “dirty” and “clean” decontaminators.
article_ctif_practical_training_v2.docx