Assessment of Radiological Dose around a 3-MW TRIGA Mark-II Research Reactor

• Autorzy: Rahman A. F. M. M. , Shamsuzzaman M. , Rahman M. S. , Uddin K. , Yeasmin S. , Nazmul Haque H. M. , Akramuzzaman M. M. , Chakraborty S. R
• Języki publikacji: EN

Abstrakty

EN

A hypothetical accidental case of a 3-MW TRIGA Mark-II research reactor has been assumed to assess the radiological consequences due to the deposition of 137Cs and 90Sr on ground, vegetation, milk and meat. The air concentrations in sixteen cardinal directions have been estimated where the maximum concentration has been found to be at 110 m distance from the core of the reactor for all the directions. Calculated maximum doses of 137Cs, 90Sr and both 137Cs and 90Sr have been found to be within the ranges of 0.005-0.014 μSv hr–1, 0.013-0.036 μSv hr–1 and 0.018-0.05 μSv hr–1, respectively for all the directions, which are below the measured background dose limit 0.25 μSv hr–1 and also within the IAEA acceptable dose rate limit of 0.5 μSv hr–1. The calculated low doses due to the aforementioned radionuclides can be considered negligible with regard to the radiation hazards. The relationship between total effective dose rate for various pathways (i.e. immersion, inhalation, ground deposition, and ingestion of contaminated vegetation, milk, meat) and air concentration in all the directions has been established. Obtained relation reveals that the total effective dose rate is directly proportional to the air concentration, and the overall proportionality constants for 137Cs and 90Sr radionuclides have been obtained as 0.57 and 0.28, respectively. This study might provide information on the radiological safety required for the radiation protection purposes of the people living in the vicinity of the reactor site.

Słowa kluczowe

EN

source term; release rate; TRIGA Mark-II reactor; dispersion; ingestion and deposition of radionuclide; Gaussian plume model; dose calculations

• Wydawca: Przedsiębiorstwo Wydawnictw Naukowych "DARWIN"
• Czasopismo: International Letters of Chemistry, Physics and Astronomy
• Rocznik: 2013
• Tom: Vol. 10, iss. 2
• Strony: 183--200
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Rahman A. F. M. M.

• Health Physics and Radioactive Waste Management Unit, Institute of Nuclear Science and Technology, AERE, Savar, Dhaka - 1349, Bangladesh

autor

Shamsuzzaman M.

• Health Physics and Radioactive Waste Management Unit, Institute of Nuclear Science and Technology, AERE, Savar, Dhaka - 1349, Bangladesh

autor

Rahman M. S.

• Health Physics and Radioactive Waste Management Unit, Institute of Nuclear Science and Technology, AERE, Savar, Dhaka - 1349, Bangladesh

autor

Uddin K.

• Health Physics and Radioactive Waste Management Unit, Institute of Nuclear Science and Technology, AERE, Savar, Dhaka - 1349, Bangladesh

autor

Yeasmin S.

• Health Physics Division, Atomic Energy Centre, Ramna, Dhaka - 1000, Bangladesh

autor

Nazmul Haque H. M.

• Department of Physics, Jahangirnagar University, Savar, Dhaka - 1342, Bangladesh

autor

Akramuzzaman M. M.

• Department of Physics, Jahangirnagar University, Savar, Dhaka - 1342, Bangladesh

autor

Chakraborty S. R

• Department of Physics, University of Chittagong, Chittagong - 4331, Bangladesh

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