Autor: Chakraborty, S. R - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Measurement of radioactive impact of the gas well accident on environment of Sylhet division in Bangladesh
Autorzy:: Chakraborty, S. R.
Saha, K. K.
Rahman, A. K. M. R.
Kamal, M.
Chowdhury, M. I.
Alam, Md. K.
Powiązania:: https://bibliotekanauki.pl/articles/411611.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Natural gas well accident
Environmental radioactivity
Public exposure etc
Opis:: The main goal of this study is to carry out the public exposure contribution from radioactive materials occurring due to the accident of natural gas exploration well of Sylhet division in Bangladesh. This study has been performed by using a gamma spectrometry of Genie 2000 software embedded PC-based High Purity Germanium (HPGe) detector system. The measured activity concentrations of naturally occurring radionuclides 232Th, 226Ra, and 40K have been in the public safety limit on the environment of the study areas. The specific activity of detected anthropogenic radionuclide 137Cs has been found to be very little with a mean value of 1.65 ± 0.61 and 1.13 ± 0.57 Bq•kg–1 in the Magurchhera and Haripur gas field area respectively.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 9, 1; 48-60
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: 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
Powiązania:: https://bibliotekanauki.pl/articles/412377.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: source term
release rate
TRIGA Mark-II reactor
dispersion
ingestion and deposition of radionuclide
Gaussian plume model
dose calculations
Opis:: 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.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 10, 2; 183-200
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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