ANALYSIS SIMULATION OF RADIOACTIVE NUCLIDES TRANSPORT TO THAI AIRFORCE BASE FOR RESEARCH REACTOR TRR-1/M-1 Analysis Simulation of Radioactive Nuclides Transport to Thai Airforce Base for Research Reactor TRR-1/M-1
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Abstract
This study simulates the dispersion of radioactive materials and estimates radiation doses in the event of a hypothetical worst-case nuclear accident scenario. The initiating event is assumed to be a breach in the cladding of a single fuel rod containing radioactive fission products from a 2 MW TRR-1/M1 research reactor. Radiation safety assessments were performed using the HOTSPOT program, with reliable modeling outcomes within a radius of less than 10 kilometers. Dose estimations at 8.8 kilometers far from the Don Mueang Air Force Base that were conducted based on atmospheric dispersion modeling under Pascal stability heavy storm class F, using average standard meteorological data which including wind speed and direction collected around the reactor by the Thai Meteorological Department in 2024. The analysis focused on a hypothetical accident scenario occurring in March, that the highest radionuclide inventories were recorded in 2024. The results indicate that the maximum radio nuclei dose at 8.8 kilometers was 2.96 × 10-5 mSv, and the human thyroid dose was 2.46 × 10-3 mSv. These values are significantly below the annual public dose limit of 1 mSv, as recommended by international radiation protection guidelines.
Keywords: TRR-1/M1 research reactor, Don Mueang Air Force Base, radio nuclei
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กุลธิดา วารีย์, “การจำลองและประเมินผลของความเร็วลมต่อการกระจายของกัมมันตรังสี จากเครื่องปฏิกรณ์ปรมาณูวิจัยสู่สิ่งแวดล้อม” [ออนไลน์]. Available : http://www.thaiphysoc.org/article/384/ (เข้าถึงเมื่อ 25 กันยายน 2568)
