Characteristics of natural radiation background at the Research and Education mine Reiche Zeche (Germany) performed within the BSUIN project.

2020 ◽  
Author(s):  
Katarzyna Szkliniarz ◽  
Kinga Polaczek-Grelik ◽  
Agata Walencik-Łata ◽  
Jan Kisiel ◽  
Toni Mueller ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Gamma Ray ◽  
Background Radiation ◽  
Gamma Ray Spectrometry ◽  
Natural Background ◽  
Radiation Background ◽  
Natural Background Radiation ◽  
Umbrella Organisation ◽  
Research And Education ◽  
The Baltic

<p>The Reiche Zeche mine is one, out of 6 Underground Laboratories (ULs) participating in the BSUIN (Baltic Sea Underground Innovation Network) project. The main goal of BSUIN is to improve the utilisation of Underground laboratories operating in the Baltic Sea Region by creating an umbrella organisation, an association, to represent the underground locations. To improve the utilisation the Uls, the sites have been characterized to understand the possibilities of the sites. Of of the studied characteristics is natural background radiation. The Reiche Zeche mine is located at a depth of 150 m (410 m w.e.) in the eastern part of the Erzgebirge Mountains, Germany. The measurements of natural background radiation (NBR) were performed: (1) in-situ by using portable HPGe semiconductor spectrometer and RAD7 electronic radon detector, and (2) in the laboratory, where the concentration of radioisotopes in water and rock samples was determined. The laboratory measurements were done in the Institute of Physics, University of Silesia (Poland) by using a liquid scintillation α/β counter (LSC), gamma-ray spectrometry and α-particle spectrometry. The obtained results of natural radioactivity in Reiche Zeche (BSUIN UL) will be presented.</p>

scholarly journals Characteristics of natural radiation background at the Callio Lab (Finland) performed within the BSUIN project

2020 ◽  
Author(s):  
Jan Kisiel ◽  
Kinga Polaczek-Grelik ◽  
Katarzyna Szkliniarz ◽  
Agata Walencik-Łata ◽  
Jari Joutsenvaara ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Gamma Ray ◽  
Background Radiation ◽  
Gamma Ray Spectrometry ◽  
Radiation Background ◽  
Rock Samples ◽  
Baltic Sea Region ◽  
Semiconductor Spectrometer ◽  
The Baltic

<p>The BSUIN (Baltic Sea Underground Innovation Network) aims to enhance the accessibility of the underground laboratories in the Baltic Sea region for innovation, business and science. One of the BSUIN project activities is characterization of natural background radiation (NBR) in underground facilities. In this talk results from NBR measurements performed in Callio Lab, Pyhäsalmi, Finland, at the depth of 4100 m w.e. will be presented. The in-situ gamma spectra were collected with the use of  HPGe semiconductor spectrometer, whereas the  concentration of radon were measured with RAD7 electronic detector. In addition, the water and rock samples were taken for laboratory analysis in Institute of Physics, University of Silesia, Poland. The concentration radioisotopes in water samples were performed by using a liquid scintillation α/β counter (LSC) and α-particle spectrometry, while the concentration of radioisotopes in rock samples were performed by using laboratory gamma ray spectrometry and also α-particle spectrometry.</p>

GAMMA DOSE RATES IN THE HIGH BACKGROUND RADIATION AREA OF MANGALORE REGION, INDIA

2019 ◽  
Vol 184 (3-4) ◽  
pp. 290-293 ◽  
Author(s):  
Darwish Al-Azmi ◽  
Sudeep Kumara ◽  
M P Mohan ◽  
N Karunakara
Keyword(s):  
Gamma Ray ◽  
Background Radiation ◽  
Gamma Dose ◽  
Natural Background ◽  
High Background ◽  
Natural Background Radiation ◽  
Dose Rates ◽  
Gamma Dose Rates ◽  
High Background Radiation Area ◽  
Normal Background

Abstract Elevated levels of natural background radiation due to scattered patches of monazite sand around the beaches of Mangalore, India, have been reported earlier. A comparative study of gamma dose rates was performed in both normal background and high natural background radiation areas around Mangalore using different types of portable gamma dosimeters. In addition to this, gamma-ray energy spectra were acquired, in situ, using a NaI(Tl) based portable gamma spectrometer. Soil and sand samples were collected for laboratory analysis with HPGe detectors. Measurements were carried out during the years 2016–18 revealed that in majority of the locations the gamma dose rates were similar to the normal background regions, whereas, in certain locations the dose rates were higher with values up to 530 nSv/h.

Characteristics of natural neutron radiation background performed within the BSUIN project.

2020 ◽  
Author(s):  
Karol Jedrzejczak ◽  
Marcin Kasztelan ◽  
Jacek Szabelski ◽  
Przemysław Tokarski ◽  
Jerzy Orzechowski ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Background Radiation ◽  
Neutron Radiation ◽  
Radiation Background ◽  
Term Operation ◽  
Baltic Sea Region ◽  
Wide Range ◽  
The Baltic

<p>The BSUIN (Baltic Sea Underground Innovation Network) aims to enhance the accessibility of the underground laboratories in the Baltic Sea region for innovation, business and science. One of the BSUIN project activities is characterization of natural background radiation (NBR) in underground facilities. A specific type of NRB is neutron radiation, whose measurement requires specific instruments and long-term exposure in-situ, in heavy underground conditions.</p><p>In this talk the method of natural neutron radiation background will be presented as well as results of pilot measurements in several underground locations. In order to make this measurements, a measuring setup was designed and made. The setup design is closely matched to the task: the setup is scalable in a wide range, completely remotely controlled (via the Internet) and capable of long-term operation (months).</p><p>The pilot measurements were performed in Callio Lab, Pyhäsalmi, Finland, (4100 m w.e.), in Reiche Zeche mine in Freiberg, Germany (410 m w.e.) and in Experimental Mine “Barbara” in Mikołów, Poland (100 m w.e).</p>

scholarly journals Consideration of the contribution of the natural background component during individual control of radiation doses to personnel

2021 ◽  
Vol 14 (4) ◽  
pp. 122-128
Author(s):  
S. Yu. Bazhin ◽  
G. N. Kaidanovsky
Keyword(s):  
Background Radiation ◽  
Radiation Doses ◽  
Individual Dose ◽  
External Radiation ◽  
Natural Background ◽  
Natural Radiation ◽  
Radiation Background ◽  
Natural Background Radiation ◽  
The Individual ◽  
Natural Component

When ensuring radiation safety in the Russian Federation, there is a principle of separate independent assessment of doses from natural, medical, emergency and technogenic exposure. In practice, it is not always possible to comply with this principled approach. The established dose limits are related only to man-made radiation during normal operation of sources of ionizing radiation. However, during the formation of regional and federal databases on individual doses of personnel exposure, information is entered not on technogenic exposure, but on industrial exposure, that is, without subtracting the natural radiation background. The natural component of the individual dose at low radiation doses is quite significant. Failure to its subtraction leads to an overestimation of the individual dose of external exposure of personnel. Difficulties arise in the implementation of the subtraction of the natural radiation background: 1) in what cases it is necessary to subtract the background, 2) what value to choose for the subtracted background, 3) what method to measure the background, 4) at what stage of processing the measurement information to subtract the background. This article proposes a method for solving the problem of subtracting the natural background radiation from the values of individual doses of external exposure to personnel based on results of individual dosimetric control. Using the example of the city of St. Petersburg, the natural background radiation was measured by the thermoluminescent method of individual dosimetry at 50 control points for three consecutive years (2018-2020). To measure the natural background, we used individual thermoluminescent dosimeters of the same type as those used to measure individual equivalents of external radiation doses to personnel. The choice of using the thermoluminescent method as a predominant one for adjusting the average doses of external radiation from technogenic sources of ionizing radiation when subtracting the natural component of the dose has been substantiated. Comparison of official data on personnel exposure doses with the data obtained as a result of our own measurements is made. Recommendations are given on the use of the obtained values of the average natural radiation background in the formation of regional and federal databases on individual doses of personnel exposure. 

Characteristics of natural background radiation in selected underground laboratories BSUIN and EUL projects.

2021 ◽  
Author(s):  
Katarzyna Szkliniarz
Keyword(s):  
Water Samples ◽  
Building Materials ◽  
Gamma Ray ◽  
Background Radiation ◽  
Natural Background ◽  
Natural Radiation ◽  
Natural Background Radiation ◽  
Network Usage ◽  
Network Project

<p>One of the most important parameters characterizing underground laboratories is natural background radiation. In underground locations, natural radiation mainly comes from the surrounding bedrock and used building materials. When selecting an underground site for research and projects, great importance is attached to the conditions prevailing there, which translates into the success of the activities carried out. Accurate measurements of natural radiation are therefore essential to guarantee the success of the project. As a part of the BSUIN (Baltic Sea Underground Innovation Network) project, such measurements were carried out in several underground laboratories. Although the BSUIN project ended last year, this research continues under the ongoing EUL (Empowering Underground Laboratories Network Usage) project.</p><p>Results of the in-situ measurements of gamma radiation and radon concentration will be presented. Additionally, laboratory measurements of radioisotope concentrations in rock and water samples from the studied sites were performed. The concentration of radioisotopes in water samples was obtained by using a liquid scintillation α / β counter and α spectrometry, while the concentration of radioisotopes in rock samples was measured with laboratory gamma-ray and α spectrometry.</p><p>A comparison of the obtained results of natural background radiation with other underground locations will also be presented.</p>

scholarly journals First transcriptome profiling of D. melanogaster after development in a deep underground low radiation background laboratory

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0255066
Author(s):  
Mikhail Zarubin ◽  
Albert Gangapshev ◽  
Yuri Gavriljuk ◽  
Vladimir Kazalov ◽  
Elena Kravchenko
Keyword(s):  
Background Radiation ◽  
Transcriptome Profiling ◽  
Rna Seq ◽  
Natural Background ◽  
Radiation Background ◽  
Differential Abundance ◽  
Natural Background Radiation ◽  
Deep Underground ◽  
High Doses ◽  
First Time

Natural background radiation is a permanent multicomponent factor. It has an influence on biological organisms, but effects of its deprivation still remain unclear. The aim of our work was to study for the first time responses of D. melanogaster to conditions of the Deep Underground Low-Background Laboratory DULB-4900 (BNO, INR, RAS, Russia) at the transcriptome level by RNA-seq profiling. Overall 77 transcripts demonstrated differential abundance between flies exposed to low and natural background radiation. Enriched biological process functional categories were established for all genes with differential expression. The results showed down-regulation of primary metabolic processes and up-regulation of both the immune system process and the response to stimuli. The comparative analysis of our data and publicly available transcriptome data on D. melanogaster exposed to low and high doses of ionizing radiation did not reveal common DEGs in them. We hypothesize that the observed changes in gene expression can be explained by the influence of the underground conditions in DULB-4900, in particular, by the lack of stimuli. Thus, our study challenges the validity of the LNT model for the region of background radiation doses below a certain level (~16.4 nGy h-1) and the presence of a dose threshold for D. melanogaster.

A unique high natural background radiation area in Indonesia: a brief review from the viewpoint of dose assessments

2021 ◽  
Author(s):  
Eka Djatnika Nugraha ◽  
Masahiro Hosoda ◽  
Yuki Tamakuma ◽  
Chutima Kranrod ◽  
June Mellawati ◽  
...  
Keyword(s):  
Background Radiation ◽  
Natural Background ◽  
Natural Background Radiation ◽  
Dose Assessments ◽  
Radiation Area
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