Evaluation of performance characteristics of portal monitor for radiation emergency. (February 2020)

• Record Type: Journal Article
• Authors: Yoo, Jaeryong; Kim, Young-su; Kim, Minsup; Eo, Inmo; Ha, Wi-Ho; Jin, Young woo
• Is Part Of: Applied radiation and isotopes. Volume 156(2020:Feb.)
• Publication Date: 2020-02
• Subjects: Plastic scintillation detector (PSD) -- Radiological triage -- Mass casualty -- Effective measurable area (EMA); Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2019.109015
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: For evaluating the counting efficiency of a portal monitor, we use a 137 Cs radiation point source (1 μCi) to subsequently establish it effective measurable area. Through simulation, we estimate the appropriate distance from potentially contaminated individuals in the scanning queue to the monitoring individual. When this distance is over 10 m, the counting efficiency was below 0.01%. We find that the triage can be applied to roughly 180 individuals per hour during mass casualties. Highlights: We evaluate the performance of a portable portal monitor for radiological triaging. We evaluate the detector transition area and the effective measurement area. We determine the "scan-waiting" distance based on experiments and simulations. The distance between the scanner and patient to be scanned is estimated as 10 m. Our study can enable rapid triaging for radiation accidents and emergencies.