Radon Programme Research Articles

Radon mitigation in Native communities: A partnership between a tribal health clinic and University of Wisconsin Carbone Cancer Center.

44 Background: Radon is the second leading cause of lung cancer in the United States, and the Native communities in Wisconsin bear an outsized burden of lung cancer. Radon testing is attainable for these communities, but the cost of one-time mitigation is high and out of reach for many. The University of Wisconsin Carbone Cancer Center (UWCCC) partnered with the Stockbridge-Munsee Band of the Mohican Nation (S-M) Health Center to test homes for radon levels and mitigate (repair) those structures when levels were high to mitigate a structural barrier of health. Prior tests had suggested 10% of homes across Wisconsin test “high” for radon (above 4 pCi/L). The mean radon level among tested homes in Wisconsin is 5.7 pCi/L (American Lung Association, Radon Testing Disparities: Wisconsin, 2022). Methods: The project was co-developed with the UW and S-M. A key partner was the Wisconsin Radon Program, housed at the Wisconsin Department of Health Services. We aimed to educate, test for radon, and mitigate all homes that tested high for radon. Education, promotion of the program and testing were done in collaboration between state, university, and tribal officials. The environmental health and community health coordinators at S-M was the key person for distributing and ensuring the return of kits. Mitigation was performed by a private certified contractor over the project. We used descriptive statistics to evaluate the percentage of Wisconsin homes that tested high for radon in our sample. We also surveyed community members about their satisfaction with the mitigation contractor. Results: This project was done from April 2023 to April 2024. Staff reported educational sessions were successful in improving their knowledge of radon and testing and mitigation procedures. The S-M had 1822 enrolled tribal members at the start of the study. A total of 85 kits were distributed, with 64 returned (75.3% return rate). Of those, 42 of 64 tested positive for high radon in the home (65.6%), much higher than the expected 10% positive rate. The mean radon level among all homes was 14.1 pCi/L (0-111.6pCi/L) and 18.7 pCi/L among homes that tested positive. All homes testing high have completed radon mitigation. All reported their homes could not have been mitigated without this collaboration. The community was satisfied with the services of the certified contractor. Conclusions: Radon levels were much higher than anticipated in Native lands in Wisconsin and may explain higher rates of lung cancer. Cancer centers are key partners in addressing high radon levels and mitigating structural determinants of health among Native communities, such as with housing quality.

ПРОБЛЕМЫ РИСК-КОММУНИКАЦИИ ПО ВОПРОСУ ОБЛУЧЕНИЯ РАДОНОМ: РЕЗУЛЬТАТЫ ВСЕРОССИЙСКОГО СОЦИОЛОГИЧЕСКОГО ИССЛЕДОВАНИЯ

1,500 respondents took part in an Internet survey conducted in autumn 2020 in the Russian Federation. The survey was a part of the Radon Cross-Cultural Multilingual Public Opinion Survey (STEAM project) in the framework of the IAEA technical cooperation project RER9153. The survey was representative for the population of the country as per sex, age, and a region of residence. Random sampling error didn’t exceed 2.5 % for 95 % confidence interval. All respondents were given some information on radon that was as similar as possible in questionnaires published in languages spoken in all 22 coun- tries that took part in the STEAM project; it was done in order to provide an opportunity to make further cross-country com- parison of the survey results. The objective of the survey was to investigate what attitudes people had towards their health and towards radon as a possible health risk factor. The survey revealed that in the Russian Federation people were rather poorly aware about radon. Only 31.7 % re- spondents stated that they were to a greater or lesser extent informed about radon. The level of knowledge about radon as a health risk factor was at a comparable level. For the majority of respondents, information about radon received from Ro- spotrebnadzor and its subordinate research institute formed the perception of radon as a risk factor that requires actions to mitigate its impact on health. Medical specialists turned out to be the most trustworthy source of information about health risks, first of all, family doctors and physicians in polyclinics; people also trusted medical prevention centers, Rospotrebnad- zor, regional and local public health care authorities. Results of the presented survey that was the first social survey focusing on the radon problem and conducted throughout the country can be used as a basis for planning communication strategies within the framework of both national and regional radon programs.

RADON RISK COMMUNICATION ISSUES: RESULTS OF THE ALL-RUSSIAN PUBLIC OPINION SURVEY

1,500 respondents took part in an Internet survey conducted in autumn 2020 in the Russian Federation. The survey was a part of the Radon Cross-Cultural Multilingual Public Opinion Survey (STEAM project) in the framework of the IAEA technical cooperation project RER9153. The survey was representative for the population of the country as per sex, age, and a region of residence. Random sampling error didn’t exceed 2.5 % for 95 % confidence interval. All respondents were given some information on radon that was as similar as possible in questionnaires published in languages spoken in all 22 coun- tries that took part in the STEAM project; it was done in order to provide an opportunity to make further cross-country com- parison of the survey results. The objective of the survey was to investigate what attitudes people had towards their health and towards radon as a possible health risk factor. The survey revealed that in the Russian Federation people were rather poorly aware about radon. Only 31.7 % re- spondents stated that they were to a greater or lesser extent informed about radon. The level of knowledge about radon as a health risk factor was at a comparable level. For the majority of respondents, information about radon received from Ro- spotrebnadzor and its subordinate research institute formed the perception of radon as a risk factor that requires actions to mitigate its impact on health. Medical specialists turned out to be the most trustworthy source of information about health risks, first of all, family doctors and physicians in polyclinics; people also trusted medical prevention centers, Rospotrebnad- zor, regional and local public health care authorities. Results of the presented survey that was the first social survey focusing on the radon problem and conducted through- out the country can be used as a basis for planning communication strategies within the framework of both national and regional radon programs.

Residential Radon in Manizales, Colombia: Results of a Pilot Study.

Radon is a colorless, odorless, and tasteless noble gas, causally related with the onset of lung cancer. We aimed to describe the distribution of radon exposure in the municipality of Manizales, Colombia, in order to estimate the population’s exposure and establish the percentage of dwellings that surpass reference levels. A cross-sectional study representing all geographical areas was carried out by measuring indoor radon concentrations. Participants answered a short questionnaire. Alpha-track type radon detectors were installed in all residences for six months. The detectors were subsequently processed at the Galician Radon Laboratory, an accredited laboratory at the University of Santiago de Compostela. A total of 202 homes were measured. Seventy-seven percent of the sampled houses were three stories high, their median age was 30 years, and half were inhabited by three people or fewer. For most dwellings, the building materials of walls and flooring were brick and covered cement, respectively. Results showed a geometric mean of radon concentration of 8.5 Bq/m3 and a maximum value of 50 Bq/m3. No statistically significant differences were found either between the geometric mean of the dwelling’s site, the height at which detectors were placed inside the home, or the wall and flooring materials, or between mean 222Rn concentrations in rural and urban areas. No dwelling surpassed the 222Rn reference level established by the WHO. This study shows that residential radon levels in Manizales, Colombia, seem to be low, though a more in-depth approach should be carried out. Despite these results, it is essential to create a national radon program and establish a radon concentration reference level for Colombia in line with international recommendations.

Results of the first national indoor radon survey performed in Serbia

The first step in every systematic approach to investigating population exposure to radon on a national level is to perform a comprehensive indoor radon survey. Based on general knowledge of the radon levels in Serbia and corresponding doses, the results obtained from a national indoor radon survey would allow policymakers to decide whether it is necessary to establish a national radon programme. For this reason, Serbia initiated work on a national radon action plan (RAP) in 2014 when it was decided to carry out the first national indoor radon survey. The responsibility for establishing the RAP in Serbia is that of the national regulatory body in the field of radiation protection—the Serbian Radiation and Nuclear Safety and Security Directorate (SRBATOM), formerly known as the Serbian Radiation Protection and Nuclear Safety Agency. The first national indoor radon survey was supported by the International Atomic Energy Agency (IAEA) through a Technical Cooperation Programme. Thanks to the IAEA, we received 6000 passive radon devices based on track-etched detectors. In addition, in order to ensure technical support for the project, SRBATOM formed a task force made up of expert radon representatives from national research institutions. This paper presents a thorough description of the sampling design of the first Serbian indoor radon survey. It also presents the results of the national indoor radon survey, including descriptive statistics and testing of the distribution of the obtained results for log-normality. Based on GPS coordinates, indoor radon data were projected onto a map of 10 km × 10 km grid cells. Two values were calculated for each cell to create two distinct maps. One map shows the arithmetic mean value of indoor radon concentration per grid cell, and the other map shows the number of radon detectors per grid cell used for the calculation of mean values.

The national radon program: Implementation experience and challenges for the future

The authors share their experience and represent the historical overview of activities on public radiation protection against radon and other natural sources of radiation in Russia. Special attention is paid to the country’s first national radon program - Federal Target Program “Radon” (FTP “Radon”, 1994-1996). Organization, structure, main goals and objectives of the FTP «Radon» are discussed. In particular, it was noted that in a short period of time the country’s regulatory and methodological framework was developed. The scientific basis for identification of the radon prone areas and regulatory support for building construction at the sites was developed. The national SSND equipment was produced and QA/QC system implemented. The national and regional radon surveys have been performed. Unfortunately, the economic situation of those years did not allow to fully implement the planned set of measures at the federal and regional levels. Nevertheless the accumulated experience served as a scientific and technical basis for further improvements in this field and to be consistent with the modern radon regulatory issues and approaches developed by the international organizations (ICRP, IAEA, WHO).

Residents\u2019 perceptions of radon health risks: a qualitative study

BackgroundRadon is a high impact environmental pollutant and is the second leading cause of lung cancer in Canada. Building design, extended winter, and geographical location expose residents of Ottawa-Gatineau (the national capital region in Canada) to an increased risk. It is surprising that residents have an inadequate awareness of the risk - despite its gravity - and have taken minimum preventive actions. This study explores perceptions of radon health risk and examines the factors that enable and hinder the adoption of preventive measures among Ottawa-Gatineau residents.MethodsWe conducted semi-structured interviews with 35 residents with varying educational and income levels to inquire about their knowledge and perception of radon, and to explore their views of enablers and obstacles to taking action to reduce radon risks. Thematic, inductive data analysis was undertaken.ResultsThe results indicate that: 1) Residents obtained information on radon from various sources that include the media, their education or occupation, their social network, and home renovation events. Limited references were made to the National Radon Program responsible for testing for radon and informing residents. 2) Awareness of radon risk varied, and the knowledge retained by some residents is insufficient to adequately protect their health. 3) Enablers for taking protective action included: having an understanding of the risk along with health consciousness; caring for family and children; knowing others who had contracted lung cancer and having financial resources. Obstacles consisted of: lack of awareness; cost; lack of home ownership; and potential difficulty in selling the house. 4) Residents attributed primary responsibility to public agencies for disseminating information, and incentivizing or mandating action through more stringent regulation.ConclusionRisk perceptions are subjective, and are influenced by micro and macro level factors. Inducing protective action to reduce risk requires comprehensive interventions taking into account the dual cognitive and emotional aspects of risk perception. Future research may explore the dual aspects of risk perception and examine the contents of the risk communication message. Policy should address the responsibility of both governments and residents in tackling the issue.

DOMESTIC RADON EXPOSURE AND CHILDHOOD LEUKAEMIA AND LYMPHOMA: A POPULATION-BASED STUDY IN CANADA.

In this paper, we revisit the possibility, first raised using a data set collected in the 1970s, that there is a link between average radon concentrations and the incidence of childhood leukaemia and lymphoma in Canada. Following the launch of the National Radon Program in 2007, Health Canada completed a long-term radon survey in 33 census metropolitan areas (CMAs), which covers about 70% of the Canadian population. We used this data, together with leukaemia and lymphoma incidence rates among children (0-14 years of age) in the past decade (2006-15), and tried to link the city-level average radon concentrations to the leukaemia and lymphoma incidence rates in 33 major Canadian cities. Analyses were conducted for six subtypes (ALL, AML, CMD, HL, NHL and BL) of leukaemia and lymphoma. Estimated doses to red bone marrow from domestic radon exposure were low and we did not find any association between radon exposure at home and the increased risk for developing leukaemia among children under 15 years of age living in the CMAs. The results indicate a slight positive association for AML among 1-4 year males in CMAs of Peer Group C and NHL among 5-9 year females in CMAs of Peer Group A; however, these should be interpreted with caution owing to the crude exposure assessment and possibilities of other confounding factors.

RADON RISK COMMUNICATION IN BULGARIA

The main purpose of this paper is to analyse the activities for Radon Risk Communication under the National Radon Program and to outline the main objectives in the new Radon Action Plan for developing a communication strategy. The preliminary activities were implemented under the National Radon Program. Survey via the Internet for assessment of perceptions and the level of knowledge regarding radon was conducted as a benchmark for evaluation of public awareness. The main channels which were used to inform the population were publications on websites, magazines, in TV interviews and radio (local), seminars, from which the most widely used were local seminars. On the basis of this, six objectives are proposed for a new radon action plan: to obtain wide organisational support and to determine the need of risk communication; to develop goals for risk communication with key messages to different target groups; to form and to train the communication team; to evaluate the stakeholders and the communication channels; to develop plans with different organisations for different focus groups; to evaluate the radon risk communication programme.

An Interdisciplinary Population Health Approach to Radon Health Risk Management in Canada

Radon is a known carcinogen found in indoor air that exists at higher than the federal reference level (200 Bq/m3) in about 10% of Canadian homes. Every year, over 3,000 people die from radon-induced lung cancer, which accounts for 16% of annual lung cancer deaths in Canada. Radon is the leading cause of lung cancer deaths among non-smokers and is second among smokers. Children, women, and smokers from lower income groups are disproportionately affected. Although the Federal Government has reset the guideline (from the previous 600 Bq/m3 down to 200 Bq/m3) and provincial governments revised the building codes to limit exposure, there remain controversies with the latest scientific development in adopting strategies of radon management in Canada.
 This review applies an Integrated Population Health Framework to look at the relationships and interactions between population health determinants such as biology and genetics, environment and occupation, and social and economic factors, that influence the health risk of radon. The evidence gathered supports policy analysis with the application of ethical and risk management principles that lead to the identification of efficient and affordable broad-based and population-level preventive strategies. The final inferences enhance the framework by adding critical intervention modalities to Health Canada’s National Radon Program.

First steps towards national radon action plan in Serbia

Abstract Radon problem has a special attention in many countries in the world and the most of them have established national radon programmes. The radon issues in Serbia have not been approached in a systematic and organized way. Currently, there are many research groups and institutions working in radon field, and it is a good basis to integrate all these activities into a comprehensive national programme to define the strategic objectives and action plan for the next few years. Also, Serbia as a candidate for membership in the EU is obliged to harmonize its legislation, including the field of radiation protection in which the radon issues has an important role. In this report, a brief history of radon research, present status and plans for the future activity on radon issues in Serbia are presented. Regarding the long-term plans, the establishment and implementation of the Radon Action Plan with the primary goal of raising awareness about the harmful effects of public exposure to radon and implementing a set of measures for its reduction. In that sense, the synergy between the national, regional and local organizations responsible for public health and radiation protection must be achieved.

An overview of radon research in Canada.

Based on new scientific information and broad public consultation, the Government of Canada updated the guideline for exposure to indoor radon and launched a multi-year radon programme in 2007. Major achievements in radon research accomplished in the past 7 y are highlighted here.

The history, development and the present status of the radon measurement programme in the United States of America.

The US radon measurement programme began in the late 1950s by the US Public Health Service in Colorado, New Mexico and Utah during the uranium frenzy. After the 1967 Congressional Hearings on the working conditions in uranium mines, the US Atomic Energy Commission (AEC) was asked to conduct studies in active uranium mines to assess the exposure of the miners on the Colorado Plateau and in New Mexico. From 1967 to 1972, the Health and Safety Laboratory of the US AEC in New York investigated more than 20 uranium mines for radon and radon decay product concentrations and particle size in 4 large uranium mines in New Mexico. In 1970, the US Environmental Protection Agency (EPA) was established and took over some of the AEC radon measurement activities. Between 1975 and 1978, the Environmental Measurements Laboratory of the US Department of Energy conducted the first detailed indoor radon survey in the USA. Later in 1984, the very high concentrations of radon found in Pennsylvania homes set the wheels in motion and gave birth to the US Radon Industry. The US EPA expanded its involvement in radon issues and assumed an active role by establishing the National Radon Proficiency Program to evaluate the effectiveness of radon measurement and mitigation methods. In 1998, due to limited resources EPA privatised the radon programme. This paper presents a personal perspective of past events and current status of the US radon programme. It will present an update on radon health effects, the incidence rate of lung cancer in the USA and the number of radon measurements made from 1988 to 2013 using short-term test methods. More than 23 million measurements were made in the last 25 y and as a result more than 1.24 million homes were mitigated successfully. It is estimated that <2 % of the radon measurements performed in the USA are made using long-term testing devices. The number of homes above the US action level of 148 Bq m(-3) (4 pCi l(-1)) may be ∼8.5 million because ∼50 million homes were added since 1990 to the home inventory. This paper will discuss the current instruments and methods used to measure radon in the USA, and what is the effectiveness of radon resistant new construction, the current status of mitigation standards and the proposed testing protocols in schools and large buildings.

The Spanish indoor radon mapping strategy.

Indoor radon mapping still represents a valuable tool for drawing the picture of the exposure of general public due to radon and radon progeny inhalation in a residential context. The information provided by means of a map is useful not only as awareness and strategic element for authorities and policy-makers, but also as a scientific start-up point in the design of epidemiological and other specific studies on exposure to natural radiation. The requirements for a good mapping are related to harmonisation criteria coming from European recommendations, as well as to national/local characteristics and necessities. Around 12,000 indoor radon measurements have been made since the Spanish national radon programme began at the end of the 1980s. A significant proportion of them resulted from the last campaign performed from 2009 to 12. This campaign completed the first version of a map based on a grid 10 × 10 km(2). In this paper, the authors present the main results of a new map together with the criteria adopted to improve the number of measurements and the statistical significance of them.

National radon programmes and policies: the RADPAR recommendations

Results from epidemiological studies on lung cancer and radon exposure in dwellings and mines led to a significant revision of recommendations and regulations of international organisations, such as WHO, IAEA, Nordic Countries, European Commission. Within the European project RADPAR, scientists from 18 institutions of 14 European countries worked together for 3 y (2009-12). Among other reports, a comprehensive booklet of recommendations was produced with the aim that they should be useful both for countries with a well-developed radon programme and for countries with little experience on radon issues. In this paper, the main RADPAR recommendations on radon programmes and policies are described and discussed. These recommendations should be very useful in preparing a national action plan, required by the recent Council Directive 2013/59/Euratom.

The Austrian radon activities on the way to the national radon action plan.

Based on the new Euratom Basic Safety Standards (BSS), all EU member states will be obliged to design a strategy to address long-term risks from radon exposure, which is laid down in the 'national radon action plan'. In Austria, the National Radon Centre is responsible for the development of the action plan. This paper presents the current and planned radon protection activities on the way to establish the radon action plan--like the national radon database, the definition of radon risk areas by improving the existing radon map, as well as strategies and activities to increase the radon awareness of the public and decision-makers and to involve the building sector. The impact of and the need for actions caused by the BSS requirements on the Austrian radon legislation, strategy and programme are discussed.

SWOT analysis of the Czech Radon programme.

Since the early 1990s, the Czech Republic has been one of the countries that carry out a radon programme on its territory, with the aim of protecting people from unnecessary long-term exposure in their homes. Since that time, many achievements have been registered, and many unexpected difficulties have cropped up. This may be the right moment to take some time out to analyse the state of the programme and to determine the direction for its future development. An extended SWOT analysis can serve as a useful tool for this purpose. Originally, SWOT analyses were used exclusively by for-profit organisations aiming to evaluate their perspectives, develop strategies and make plans in order to achieve their objectives. More recently, it has been used in a wide range of decision-making situations when a desired end-state is to be defined. Here, an extended SWOT analysis is used to formulate possible beneficial strategies for advancing anti-radon policy in the Czech Republic.

Radon program of the Czech Republic

The Radon Program of the Czech Republic 2010-2019--Action Plan is based on Governmental Decision No. 594/2009 (Radon Program of the Czech Republic 2010-2019--Action Plan, Government of the Czech Republic, Decision No. 594/2009, May 4 2009) and is coordinated by the State Office for Nuclear Safety. It covers both prevention in new house construction and intervention in existing houses with high indoor radon concentration. The Program is aimed at developing an effective public information system. It takes advantage of long-term experience and good scientific and technological background-staff, methods, standards and technologies.

A modelling methodology for the analysis of radon potential based on environmental geology and geographically weighted regression

Many countries have promoted environmental studies and established national radon programmes in order to identify those geographical areas where high indoor exposure risk of people to this radioactive gas are more likely to be found (often referred to as ‘radon-prone areas’). Traditionally, the evaluation of radon potential has been pursued by means of global inference techniques. Conversely, in this paper we present a novel modelling approach, based on well established environmental software, best suited to capture the spatial variability of local relationships between indoor radon measurements and some environmental geology-related factors. The proposed strategy consists of three stages. First, a multilevel model based standardisation of indoor radon data should be carried out in order to reduce the building related variability. Then, the global and local autocorrelation indexes have to be employed to highlight the role of the local effects. The last step implies the use of the Geographically Weighted Regression(GWR) to show the differences in associations between indoor radon and the geological factors across space. The method was tested using an available geo-referenced dataset including both radon indoor measurements and geological data related to the territory of an Italian region (Abruzzo). The results are encouraging, although there are several critical issues to be addressed.

Radonový program v České republice pokračuje

Radonový program byl zahajen v 80. letech minuleho stoleti. Nyni probiha jeho třeti dekada. Autorka zastupuje v tomto programu ministerstvo zdravotnictvi s hlavnim ukolem siřit informace o riziku radonu a o možnostech ochrany zdravi. V clanku je podana informace o aktualnich aktivitach.