Analysis of distributions of indoor radon concentrations in the regions of the Russian Federation

Self Cite

The paper presents results of a comprehensive radiation survey conducted in 2019 in six districts of the eastern part of the Orenburg region in 37 settlements with previously found elevated levels of activity concentration of natural radionuclides in tap water from groundwater sources of drinking water supply. The survey included measurements of indoor radon concentrations and EEC in residential and public buildings, as well as measurements of ambient dose equivalent rate of gamma radiation indoors and outdoors. The survey revealed that annual average indoor radon EEC in many residential buildings in 23 settlements and public buildings in 25 settlements exceeded the hygienic norm (action level) of 200 Bq/m3 adopted in Russia for existing buildings. The highest values of annual average indoor radon EEC were obtained in residential buildings in Novovinnitskoe (1242 Bq/m3), Bratslavka (987 Bq/m3) and Anikhovka (942 Bq/m3) in Adamovsky district, and in public buildings in Kvarkeno (2291 Bq/m3) in Kvarkensky district, Karabutak (1114 Bq/m3) and Novovinnitskoe (923 Bq/m3) in Adamovsky district. The established hygienic norms in terms of ambient dose equivalent rate indoors and outdoors were not exceeded in the surveyed settlements. Results of the survey showed that the main reason for high indoor radon concentrations in residential and public buildings in the settlements of the eastern part of the Orenburg region is not related to the usage of tap water from groundwater sources of drinking water supply with elevated levels of activity concentration of natural radionuclides.

Section: виды объем и методы исследованийunclassified

unclassified

See 1 more Smart Citation

Public exposure in the Orenburg region due to natural sources of ionizing radiation. Part 1: Results of the comprehensive survey of settlements in the eastern districts of the Orenburg region

Kormanovskaya

Романович

Vyaltsina

et al. 2023

Self Cite

“…П еред началом стати сти че ско й обр або тки была п р о ведена валидация результатов и зм ер ен и й ОА радона и ЭРОА изотопов радона в соо тве тстви и с подходом, о п и санны м в [7]: результаты менее нижней границы д и а п а зон а и зм ер ен и й (НГДИ), а такж е результаты изм ер ени й пассивны м интегральны м методом, превы ш аю щ ие п р е дел насы щ ения ТД, равны й 180 к Б к-сутки /м 3 (что с о о т ветствует м е тр ол оги чески м хар актери сти ка м ком плекта аппаратуры «ТРЕК-РЭИ-1М», указанны м в прилож ении к свидетельству об утве рж де ни и д а н н о го типа средств изм ер ен и й), получены не были. Результаты изм ер ени й ЭРОА тор он а не превы сили значения НГДИ соо тве тств у ю щ их средств и зм ер ен и й и далее не рассм атриваю тся.…”

Section: м атериалы и методыunclassified

Substantiation of methodical approaches to the control of indoor radon concentration in existing public buildings with non-round-the-clock stay of people

Vasilyev

Романович

Кононенко

et al. 2021

Self Cite

According to the analysis of requests for methodological assistance to the Saint-Petersburg Research In stitute of Radiation Hygiene after Professor P. V. Ramzaev, measurements of radon concentration (or radon EEC) in existing operated public buildings (primarily children institutions) in the framework of surveillance actions in the regions of the Russian Federation, as a rule, are taken according to Guidelines MU 2.6.1.2838-11, intended for radiation control of public buildings only when they are put into operation after construction, major repairs or reconstruction, due to the absence of special guidelines. Compliance with the requirements of paragraph 6.5 of MU 2.6.1.2838-11 means that the building and premises are in a state that is not equal to their normal operation mode. Registration of high values of indoor radon concentration in this case leads to management decisions, including administrative suspension o f activities for up to ninety days, i.e. the closure of individual premises or even the entire building of a children institution. The consequences of making such decisions may include an increase in social tension in society and provoking radiophobia among the population. The paper presents specific recommendations for the radon survey for existing operated public buildings with non-round-the-clock stay of people, which are based on the results of the analysis of the experience of practical application of various methods of measuring indoor radon concentrations in such buildings in order to assess average radon concentration during working hours in the normal operation mode. The proposed approach can be further used as the basis for developing special guidelines for radiation control of existing operated public buildings with non-round-the-clock stay of people.

“…Среднемировая ОА радона в жилых здания составляет, по разным данным, 40-50 Бк/м 3 , при этом наблюдается значительная вариабельность уровней накопления в различных жилищах. По данным работы [1], средняя арифметическая ОА радона в жилых зданиях регионов России варьирует от 20 до 230 Бк/м 3 . По нашим оценкам, при-мерно в одном проценте жилищ России ОА радона превышает 400 Бк/м 3 [2].…”

Section: Introductionunclassified

Comparative analysis of radon concentrations in buildings of different energy efficiency classes on example of five Russian cities

Ярмошенко

Онищенко

Малиновский

et al. 2020

A comparative analysis of the radon concentrations in modern multi-storey residential buildings of high energy efficiency class and buildings typical for urban areas of the twentieth century was carried out. The study was conducted in Russian cities located in various climatic zones – Ekaterinburg, Krasnodar, St. Petersburg, Salekhard, Chelyabinsk. The radon concentration in samples of buildings was measured using integrated radon radiometers based on nuclear track detectors according to a single method. The surveyed sample included 498 apartments in multi-apartment buildings. Among all the examined building types, the highest average radon concentration is observed in modern energy-efficient houses – 43 Bq/m3. In other types of buildings, the following average radon concentrations were obtained: brick 2–5 floors – 35 Bq/m3; panel 5 floors – 32 Bq/m3; panel 7–12 floors 1970-1990 years of construction – 22 Bq/m3; brick> 5 floors 1970–1980 years of construction – 20 Bq m3; panel, built since 1990 – 24 Bq/m3. The results of the study confirm the assumption that radon concentration in modern multi-storey energy-efficient houses is on average higher than in typical residential buildings of the Soviet period. The increased accumulation of radon in energy-efficient buildings is associated with a decrease in the building envelope permeability and the contribution of fresh air to the general air exchange. Despite the fact that there were no cases of exceeding hygienic standards for the indoor radon concentration in the framework of this study, the higher radon concentration in buildings of increased energy efficiency requires attention from the point of view of implementing the principle of optimization of radiation protection. In the future, extensive construction of energy-efficient buildings may increase the average and collective doses to the urban population in the Russian Federation.