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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:55 |
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Conference: Bucharest University Faculty of Physics 2022 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
MEASUREMENT OF THE RADON CONCENTRATION IN THE AIR IN BUILDINGS AND IN THE RADIOACTIVE WASTE STORAGE FACILITY FROM IFIN-HH
Authors:
VALENTIN FILIP
Affiliation:
IFIN-HH
E-mail
valentinfilip260@gmail.com
Keywords:
radon concentration
Abstract:
This paper presents measurements of the radon specific activity in the air, in some classrooms and amphitheaters from the Faculty of Physics, in the Department of Radioactive Waste Management (DMDR) laboratory and in an intermediate storage facility for radioactive waste from DMDR-IFIN-HH.
The radon concentration was measured using a professional AlphaGuard monitor and five commercial Airthings monitors. From the measurements performed it was observed that the radon concentration values are comparable, but the professional monitor has a higher speed response.
The radon specific activity in the Faculty of Physics’ classrooms is below the recommended level by Directive 2013/59 / Euratom and the Norms on the basic requirements of Radiological Safety, which specifies a reference level of 300 Bq / m3 for housing and jobs . Because of this, there is no need a ventilation system. In amphitheaters, was an increase of the radon level concentration during the night, close to the reference level and for this reason, these must be ventilated, for at least 15 minutes, before use.
In the DMDR laboratory, the maximum level of the radon specific activity is close to 200 Bq / m3 during the night, which justifies the installation of a fan that introduces air from outside, because the increase in radon concentration influences the measurements and analyzes performed in the laboratory.
In the DMDR storage are sources of neutrons, Ra-Be, Am-Be, Am-241 and Ra-226, especially long-lived radionuclide sources, which leads to an increase the radon concentration. Therefore, in order to be able to operate safely from the point of view of radiation protection, this intermediate storage was provided with a ventilation system.
Because a high radon concentration is harmful for the human health, it is recommended that all rooms, where the people live or work, should be ventilated as often as possible.
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