Nuclear Technology & Radiation Protection Journal


NT & RP Journal	THE DOSE FROM RADIOACTIVITY OF COVERING CONSTRUCTION MATERIALS IN SERBIA
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Vol. XXX, No. 4, Pp. 239-323 December 2015 UDC 621.039+614.876:504.06 ISSN 1451-3994 Back to Contents	Pages: 287-293 Authors: Vesna M. Manić, Goran J. Manić, Dragoslav R. Nikezić, and Dragana Ž. Krstić Abstract The indoor dose due to the radiation of ceramic and granite tiles, marble, granite and travertine plates, as well as some components of covering materials, produced in Serbia or imported from other countries, was estimated in the work. Activity concentrations of ²²⁶Ra, ²³²Th, and ⁴⁰K were measured by the standard gamma-spectrometry system. The lowest content of the radionuclides was found in white marble (A_Ra = 2 Bq/kg, A_Th < 2 Bq/kg, and A_K < 3 Bq/kg), while the highest activities were in some granite samples (Balmoral red: A_Ra = 200 Bq/kg, A_Th = 378 Bq/kg, and A_K = 1679, and Madura Gold: A_Ra = 273 Bq/kg, A_Th = 20 Bq/kg, and A_K = 1456 Bq/kg). The indoor absorbed dose rate in air due to the gamma radiation from covering materials was determined based on the specific absorbed dose rate computed in this work. Concentration of ²²²Rn that emanated into the indoor space was also calculated from the known ²²⁶Ra content. The radiation hazard estimated from the usage of each sample was expressed through the evaluated effective dose. Almost all samples, except one, fulfil the dosimetric criterion for safe use. Key words: dose, activity concentration, natural radionuclide, covering material FULL PAPER IN PDF FORMAT (1017 KB)
Vinča Institute of Nuclear Sciences :: Designed by milas :: July 2007 Operated by acapanic :: Last updated on February, 2016

Pages: 287-293

Authors: Vesna M. Manić, Goran J. Manić, Dragoslav R. Nikezić, and Dragana Ž. Krstić

Abstract

The indoor dose due to the radiation of ceramic and granite tiles, marble, granite and travertine plates, as well as some components of covering materials, produced in Serbia or imported from other countries, was estimated in the work. Activity concentrations of ²²⁶Ra, ²³²Th, and ⁴⁰K were measured by the standard gamma-spectrometry system. The lowest content of the radionuclides was found in white marble (A_Ra = 2 Bq/kg, A_Th < 2 Bq/kg, and A_K < 3 Bq/kg), while the highest activities were in some granite samples (Balmoral red: A_Ra = 200 Bq/kg, A_Th = 378 Bq/kg, and A_K = 1679, and Madura Gold: A_Ra = 273 Bq/kg, A_Th = 20 Bq/kg, and A_K = 1456 Bq/kg). The indoor absorbed dose rate in air due to the gamma radiation from covering materials was determined based on the specific absorbed dose rate computed in this work. Concentration of ²²²Rn that emanated into the indoor space was also calculated from the known ²²⁶Ra content. The radiation hazard estimated from the usage of each sample was expressed through the evaluated effective dose. Almost all samples, except one, fulfil the dosimetric criterion for safe use.

Key words: dose, activity concentration, natural radionuclide, covering material

FULL PAPER IN PDF FORMAT (1017 KB)