Ecological and genetic assessment of the consequences of radiation influence on contaminated areas

The objects of study are the territory of the districts of the West Kazakhstan region of the Republic of Kazakhstan adjacent to the Kapustin Yar test site: Bokeyordinsky, Zhangalinsky, Zhanibeksky, Kaztalovsky, Akzhayiksky and Syrymsky. The purpose of the work is to conduct a radioecological survey of contaminated areas and to study the content of pollutants in environmental objects, biota (rodents, fish and biosubstrates of domestic animals) by physicochemical methods to assess the risk of the landfill’s impact on biota and humans. This paper presents the results of expeditionary and laboratory research on the pollution of environmental objects in the areas adjacent to the landfill. Indicators of the gamma-survey of the levels of radiation background of the surveyed territories as wellas data on pollution of soil, surface and ground waters, dominant forms of plants, biosubstrates (hair of domestic animals: camel, horse, cow) are given. The generally accepted research methods were used: standard sampling me thods, radiological, atomic adsorption spectrophotometry, cytogenetic (micronucleus) method. A reconnaissance and radioecological examination of environmental objects was carried out using analytical methods, which made it possible to determine the quantitative content of toxic components, the content of priority pollutants and radioactive isotopes. It has been established that the values of the volumetric activity of natural and man-made radionuclides in soil samples, drinking water and biosubstrates (pet hair, human peripheral blood samples) from settlements correspond to the value of the control level for this region. The measurements of radiation activity by gamma radiation showed that along the perimeter of the surveyed territory of the test site and in nearby settlements the radiation level is in the range of 0.06–0.014 μSv/h. A slight excess of the level of radioactivity persists in the area near the fall of missiles in the Bokeyordin region. The investigated regions are characterized by an insignificant level of background radiation, the average DER value for the regions as a whole is 0.14 μSv/h. The absolute maximum, 0.73 μSv/h, was recorded at the points of missile impact in the Kaztal region.

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Human teeth enamel as a test for assessing the consequences of radiation pollution of the environment

International Professional Journal Medicine ◽

10.31082/1728-452x-2021-223-1-22-27 ◽

2021 ◽

Vol 1 (223) ◽

pp. 22-27

Author(s):

Aitkhazha Bigaliev ◽

◽

Clara Shalabayeva ◽

Alma Zamuraeva ◽

Kuralay Zhumabayeva ◽

...

Keyword(s):

Human Peripheral Blood ◽

Adult Population ◽

Test Site ◽

Radioactive Isotopes ◽

Gamma Activity ◽

Radiation Level ◽

Human Teeth ◽

Natural Level ◽

Retrospective Assessment ◽

The Impact

Technogenic radioactive contamination of the external environment has a radiation effect on flora and fauna, including humans. Radionuclides entering the biosphere become a source of external, contact and internal radiation in a variety of combinations. The electron paramagnetic resonance dosimetry is a technique that allows a retrospective assessment of an individual dose to be made. Purpose of the study. Assessment of the long-term consequences of the impact of radiation contamination of the territories adjacent to the landfill on the health of the population using biotesting methods. Material and methods. A reconnaissance and radioecological survey of environmental objects was carried out using analytical methods, which made it possible to determine the quantitative content of toxic components, priority pollutants and radioactive isotopes. The objects of study are the Bokeyordinsky and Zhanibeksky districts of the West Kazakhstan region (WKR), adjacent to the Kapustin Yar test site. The values of the volumetric activity of natural and technogenic radionuclides in soil samples, drinking water and biosubstrates (teeth, samples of human peripheral blood) from settlements of the surveyed areas were studied. Results and discussion. Measurements of gamma radiation showed that along the perimeter of the polygon and in nearby settlements, the radiation level is in the range of 0.06–0.14 µSv/h. An insignificant excess of the level of radioactivity persists near the fall of missiles in the Bokeyordin region. The indicators of the general morbidity of the adult population of maternal and child mortality in the indicated regions were also studied. It was found in the inhabitants of the Bokeyordinsky district with a reliability of p = 95% in the studied teeth, betta and gamma activity is less than the natural level and indicates that the content of radionuclides in the studied teeth is not higher than their natural level. A noticeable excess of the activity of radionuclides K40 and Ra226 is noted among residents of Zhanibeksky district. Conclusions. In the surveyed districts of the region, there is an unsatisfactory state of health of children and women, especially of fertile age, a high level of primary morbidity, maternal mortality; there is a tendency for the growth of eco-dependent human diseases (previously unrecorded forms of oncological diseases, congenital malformations, diseases of the hematopoietic and nervous systems). The conclusions can be used to implement measures to improve the ecological state of the region and the health of the population. Keywords: radionuclides, radioactivity, biosubstrate, polygon, ecology, eco-dependent diseases.

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ANALYSIS OF THE RADIOLOGICAL SAFETY CONTROL LEVEL VERSUS THE EXPOSURE OF RADIATION WORKERS IN SOUTH KOREA FROM 2008–17

Radiation Protection Dosimetry ◽

10.1093/rpd/ncy190 ◽

2018 ◽

Vol 184 (1) ◽

pp. 98-108

Author(s):

Sang-Tae Kim ◽

Jaeryong Yoo

Keyword(s):

Nuclear Power ◽

Power Plants ◽

Radiation Safety ◽

Safety Management ◽

Control Level ◽

Radioactive Isotopes ◽

Safety Control ◽

Level Versus ◽

Radiation Workers

Abstract In this study, the radiation exposure of workers at workplaces registered and licensed between 2008 and 2017 for the production/sale/use of radioactive isotopes (RI) and radioactive generators (RG) was analysed to evaluate the quality of radiation safety management controls in use. The number of facilities using RIs increased by ~26% from 2008 to 2017 whereas the number of facilities using RGs increased by ~166% over the same period. There were 33 029 radiation workers in all fields in 2008, and the number increased by ~32% to 43 467 by 2017. However, the collective effective dose of radiation received by workers decreased in all industries except for those working in nuclear power plants. In other words, the quality of radiation safety management improved over that same time period due to the systematic, continuous introduction of safety mechanisms by the regulatory authority.

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

10.5194/egusphere-egu2020-2979 ◽

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

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, Pyh&#228;salmi, Finland, at the depth of 4100 m w.e. will be presented. The in-situ gamma spectra were collected with the use of&#160; HPGe semiconductor spectrometer, whereas the &#160;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 &#945;/&#946; counter (LSC) and &#945;-particle spectrometry, while the concentration of radioisotopes in rock samples were performed by using laboratory gamma ray spectrometry and also &#945;-particle spectrometry.

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

10.5194/egusphere-egu2020-3353 ◽

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

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.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).The pilot measurements were performed in Callio Lab, Pyh&#228;salmi, Finland, (4100 m w.e.), in Reiche Zeche mine in Freiberg, Germany (410 m w.e.) and in Experimental Mine &#8220;Barbara&#8221; in Miko&#322;&#243;w, Poland (100 m w.e).

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The long-term effects of space weather on satellite operations

Annales Geophysicae ◽

10.5194/angeo-28-1361-2010 ◽

2010 ◽

Vol 28 (6) ◽

pp. 1361-1367 ◽

Cited By ~ 9

Author(s):

D. T. Welling

Keyword(s):

Background Radiation ◽

High Energy ◽

High Energy Particle ◽

Solar Cycles ◽

Long Term Effects ◽

Radiation Background ◽

Particle Exposure ◽

Total Lifetime ◽

The Impact

Abstract. Integrated lifetime radiation damage may cause spacecraft to become more susceptible to operational anomalies by changing material characteristics of electronic components. This study demonstrates and quantifies the impact of these effects by examining the National Oceanic and Atmospheric Administration (NOAA) National Geophysical Data Center (NGDC) satellite anomaly database. Energetic particle data from the Geostationary Operational Environmental Satellites (GOES) is used to construct the total lifetime particle exposure a satellite has received at the epoch of an anomaly. These values are compared to the satellite's chronological age and the average exposure per year (calculated over two solar cycles.) The results show that many anomalies occur on satellites that have received a total lifetime high-energy particle exposure that is disproportionate to their age. In particular, 10.8% of all events occurred on satellites that received over two times more 20 to 40 MeV proton lifetime particle exposure than predicted using an average annual mean. This number inflates to 35.2% for 40 to 80 MeV protons and 33.7% for ≥2 MeV electrons. Overall, 73.5% of all anomalies occurred on a spacecraft that had experienced greater than two times the expected particle exposure for one of the eight particle populations used in this study. Simplistically, this means that the long term radiation background exposure matters, and that if the background radiation is elevated during the satellite's lifetime, the satellite is likely to experience more anomalies than satellites that have not been exposed to the elevated environment.

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Features of background radiation of different St. Petersburg districts

Radiation and Risk Bulletin of the National Radiation and Epidemiological Registry ◽

10.21870/0131-3878-2021-30-3-32-45 ◽

2021 ◽

Vol 30 (3) ◽

pp. 32-45

Author(s):

V.G. Puzyrev ◽

◽

I.V. Vasilyeva ◽

D.A. Zemlyanoi ◽

Y.N. Kapyrina ◽

...

Keyword(s):

Radiation Safety ◽

Background Radiation ◽

General Description ◽

Negative Consequences ◽

The South ◽

Radiation Background ◽

Equivalent Dose Rate ◽

Radiation Control ◽

Determining Factors ◽

Radiation Monitoring System

Radiation safety takes an essential part in the megalopolises' ecological system. Nowadays the influence of radiation factor on the biosphere is considered one of the determining factors and it causes the necessity to monitor the environmental and radiation safety of the population. The aim of the study is a comparative assessment of the ambient equivalent dose rate (ADER) of gamma radiation according to automated radiation monitoring system (АSКRО) data and its own measurements in the South-Western district of St. Petersburg. The article presents an analysis of the radiation background of St. Petersburg over the past five years based on the data of the АSКRО, as well as the results of own measurements of the ADER in the South-Western district of St. Petersburg using the dosimeter-radiometer "Ecologist profi". When analyzing the radiation levels of various districts of St. Petersburg, it was found that the regions with a relatively higher level of ADER included the Central and South-Western regions. The results of our own meas-urements are comparable with the data from АSКRО; there are no significant differences be-tween the data samples. The results of the study show that the АSКRО data can be used for a general description of the radiation situation in certain areas of St. Petersburg, but they can not serve as a substitute for operational radiation control (monitoring). It is necessary to constantly control and monitor the radiation situation in the region in order to obtain information for timely detection of changes in the radiation situation and to prevent possible negative consequences of radiation exposure for the population and the natural environment.

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Consolidation parameters in silts from varied rate CPTU tests

AIMS Geosciences ◽

10.3934/geosci.2021039 ◽

2021 ◽

Vol 7 (4) ◽

pp. 637-668

Author(s):

Annika Bihs ◽

◽

Mike Long ◽

Steinar Nordal ◽

Priscilla Paniagua ◽

...

Keyword(s):

Penetration Rate ◽

Test Site ◽

Laboratory Research ◽

Design Parameters ◽

Rate Dependency ◽

Cone Penetration ◽

Coefficient Of Consolidation ◽

Cone Penetration Tests ◽

Dissipation Test ◽

Consolidation Parameters

<abstract> The interpretation of dissipation tests from cone penetration tests (CPTU) in silt is often considered challenging due to the occurrence of an unknown degree of partial consolidation during penetration which may influence the results significantly. The main objective of the present study is to investigate the influence of penetration rate and hence partial consolidation in silt deposits on the interpretation of consolidation parameters. Rate dependency studies have been carried out so as to give recommendations on how to establish design consolidation parameters in silts and consider the effect of partial consolidation on the development of design parameters. A comprehensive field and laboratory research program has been conducted on a silt deposit in Halsen-Stj?rdal, Norway. Alongside performing various rate penetration CPTU tests with rates varying between 0.5 mm/s and 200 mm/s, dissipation tests were executed to analyze the consolidation behaviour of the soil deposit. Furthermore, a series of soil samples have been taken at the site to carry out high quality laboratory tests. Correction methods developed for non-standard dissipation tests could be successfully applied to the silt deposit indicating partial consolidation. The results revealed an underestimation of the coefficient of consolidation if partial consolidation is neglected in the analysis, emphasizing the importance of considering the drainage conditions at a silt site thoroughly. To study the drainage conditions of a soil deposit a recently proposed approach has been applied introducing a normalized penetration rate to differentiate between drained and undrained behaviour during penetration. It is suggested that a normalized penetration rate of less than 0.1–0.2 indicate drained behaviour while a normalized penetration rate above 40–50 indicate undrained behaviour. Finally, available dissipation test data from a Norwegian Geo-Test Site (NGTS) in Halden, Norway have been used to successfully verify the recommendations made for silts. </abstract>

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