Methodological Approaches to Measurement of Carbon-14 for Control of its Radiation Impact on the Personnel and the Public

2021 ◽  
Vol 66 (6) ◽  
pp. 10-17
Author(s):  
V. Klochkov ◽  
L. Kuznetsova ◽  
N. Eremina ◽  
D. Kabanov ◽  
A Maksimov ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Control Area ◽  
Research Literature ◽  
Dose Assessment ◽  
Cosmogenic Radionuclides ◽  
Annual Dose ◽  
The Public ◽  
Carbon 14 ◽  
Naturally Occurring ◽  
Top Soil

Purpose: Analysis of the current regulatory and methodological framework on control of doses from intake of 14C for the personnel and the public living in the control area of the nuclear power plant (NPP). Identifying the most informative methods of controlling radiation impact of 14C on a human being. Material and methods: Research literature on radiation impact of naturally occurring 14C; 14C entering the environment as a result of nuclear weapon tests; and 14C entering workplaces and the control area of NPP has been reviewed. Dose coefficients and other radiation characteristics of 14C provided in IAEA, ICRP and UNSCEAR publications have been summarized. Results: According to UNSCEAR, annual radiation burden caused by global 14C is the highest one (about 80 %) among radiation burdens associated with four critical naturally occurring cosmogenic radionuclides: 3H (0.01 µSv/year), 7Be (3.0 µSv/year), 14C (12 µSv/year) and 24Na (0.2µSv/year). The main way of 14C intake is the alimentary one when this isotope enters the human body with food. Dose from this kind of intake of global 14C can reach 40 µSv. The annual dose caused by aerogenic (inhalation) way of intake of global 14C does not exceed 1 µSv. The most informative methods of dose assessment for the personnel of NPP and the public living in the control area involve measurement of content of 14C in top soil, vegetation and food products. Conclusions: Significant amount of 14C enters the environment within the control area during operation of NPP, which causes the public radiation dose exceeding the dose from global 14C. The most informative objects characterizing content of technogenic 14C in the control area of NPP are top soil (humus) and vegetation. The liquid scintillation spectrometry involves sample preparation by burning of samples in oxygen with capturing of generated carbon dioxide and its transfer into organic solvent. This is the most technologically viable method for mass control of 14C content in samples of top soil and vegetation.

TRANSBOUNDARY RADIOLOGICAL EFFECTS OF A HYPOTHETICAL NUCLEAR ACCIDENT IN NORTHEAST ASIA

2020 ◽  
Vol 188 (4) ◽  
pp. 470-476
Author(s):  
Ashraf Musauddin ◽  
Juyoul Kim
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Source Term ◽  
Northeast Asia ◽  
Nuclear Safety ◽  
Lessons Learned ◽  
Nuclear Accident ◽  
Dose Assessment ◽  
Fukushima Accident ◽  
The Public

Abstract Offsite radiological consequence investigation using computerized software has been considered as an important quantitative risk communication in order to recognize and discuss public concerns about nuclear safety and health risk in case of hypothetical nuclear accidents around specific nuclear power plants (NPPs), with guideline of lessons learned from previous nuclear disasters. In this study, Northeast Asia nuclear accident simulator (NANAS) developed by Nuclear Safety and Security Commission (NSSC) in Korea was used to quantify the offsite radiological consequences from Haiyang unit 1 NPP in China and to examine the emergency protective measures for the public around regions of Korea as NPPs operating in Northeast Asia countries contributed to about 25% of the industry. Broad simulations of radiological source term estimation, atmospheric dispersion analysis and radiation dose assessment to the public have been performed in case of hypothetical nuclear accident involving source term of radionuclides release taken from Fukushima accident.

scholarly journals Radiological Dose Assessment to Members of the Public Using Consumer Products Containing Naturally Occurring Radioactive Materials in Korea

2021 ◽  
Vol 18 (14) ◽  
pp. 7337
Author(s):  
Soja Reuben Joseph ◽  
Juyoul Kim
Keyword(s):  
Activity Concentration ◽  
Exposure Dose ◽  
Consumer Products ◽  
Dose Assessment ◽  
Internal Exposure ◽  
Dose Limit ◽  
Radioactive Materials ◽  
The Public ◽  
Naturally Occurring ◽  
Naturally Occurring Radioactive Materials

Various products containing a small number of added radionuclides are commonly available for use worldwide. However, frequent use of such products puts the public at risk of radiation exposure. In this study, dose assessments to members of the public using consumer products containing naturally occurring radioactive materials (NORMs) were conducted for various usage scenarios to evaluate the external and internal exposure dose. Data for this study were obtained from previous literature and were statistically analyzed using Boxplot to determine the input data for assessment. A normalized value of activity concentration was used for dose evaluation. In addition to other external and internal dose calculation codes, analytical calculations were used to perform age-dependent. Based on analytical calculations, the highest total effective dose equivalent (TEDE) received from necklace products at the upper whiskers with an activity concentration of 4.21 Bq/g for 238U, 24.4 Bq/g for 232Th, and 0.55 Bq/g for 40K for various age groups is 2.03 mSv/y for 1 year old, 1.24 mSv/y for 10 years old and 1.11 mSv/y for adult, which are above the international commission for radiation protection (ICRP) recommended public dose limit of 1 mSv/y. Results of external and internal exposure dose obtained using Microshield code, IMBA code and Visual Monte Carlo (VMC) code are all below the recommended public dose limit of 1 mSv/y.

DOSE ASSESSMENT FOR ATMOSPHERIC DISCHARGE OF LONG-LIVED RADIONUCLIDES IN NUCLEAR POWER PLANT DECOMMISSIONING

2020 ◽  
Vol 190 (2) ◽  
pp. 139-149
Author(s):  
Chitra S ◽  
S Anand ◽  
Pradeep Bhargava ◽  
Jayant Krishan ◽  
Kapil Deo S Singh ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Dose Assessment ◽  
Regulatory Requirement ◽  
The Public ◽  
Adult Dose ◽  
Infant Dose ◽  
Atmospheric Discharge ◽  
Plant Equipment ◽  
Water Reactors

Abstract Decommissioning of nuclear power plants is a multistage process involving complex operations like radiological characterization, decontamination and dismantling of plant equipment, demolition of structures, and processing and disposal of waste. Radioactive effluents released into the environment may result in exposure of population through various exposure pathways. The present study estimates the public dose due to atmospheric discharge of important radionuclides during proposed decommissioning activities of Indian Pressurized Heavy Water Reactors. This study shows that major dose contributing radionuclides are 60Co followed by 94Nb, 134Cs, 154Eu, 152Eu, 133Ba, 99Tc, 93Mo and 41Ca. It is found that infant dose is higher than adult dose and major fraction of total dose (~98%) is through ground shine and ingestion; other pathways such as inhalation and plume shine contribute only a small fraction. This study will be helpful in carrying out radiological impact assessment for decommissioning operations which is an important regulatory requirement.

scholarly journals Living Labs for Public Sector Innovation: An Integrative Literature Review

2021 ◽  
Vol 11 (2) ◽  
pp. 58
Author(s):  
Lars Fuglsang ◽  
Anne Vorre Hansen ◽  
Ines Mergel ◽  
Maria Taivalsaari Røhnebæk
Keyword(s):  
Public Sector ◽  
Literature Review ◽  
Public Administration ◽  
Research Literature ◽  
Future Research ◽  
The Public ◽  
Public Sector Innovation ◽  
Multiple Dimensions ◽  
Living Labs ◽  
Elusive Concept

The public administration literature and adjacent fields have devoted increasing attention to living labs as environments and structures enabling the co-creation of public sector innovation. However, living labs remain a somewhat elusive concept and phenomenon, and there is a lack of understanding of its versatile nature. To gain a deeper understanding of the multiple dimensions of living labs, this article provides a review assessing how the environments, methods and outcomes of living labs are addressed in the extant research literature. The findings are drawn together in a model synthesizing how living labs link to public sector innovation, followed by an outline of knowledge gaps and future research avenues.

scholarly journals Sustainable public health partnerships: Results from 41 European, Asian and American regions

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
J Ese ◽  
C Ihlebak
Keyword(s):  
Public Health ◽  
Public Sector ◽  
Social Contexts ◽  
Research Literature ◽  
Person Fit ◽  
Time Data ◽  
Incentive Schemes ◽  
The Public ◽  
Health Partnerships ◽  
Group Interviews

Abstract Background Public health problems often constitute so called “wicked problems”, and the importance of involving multiple stakeholders in order to address such problems is acknowledged, for instance through the SDG17 guidelines. Partnerships between academia and the public sector have been deemed especially promising. However, sustainable partnerships might be difficult due to divergent understandings and interests. Although there is a substantial research literature on academic-public partnerships in general, partnerships addressing public health specifically are less investigated. The aim of the project was therefore to identify enablers for sustainable public health partnerships between academia and the public sector. Methods A mixed methods design was used. A survey regarding partnerships was sent to 41 European, Asian and American regions, with a response rate of 72 %. Based on survey data, an interview guide was developed and four best cases (Canada, Bulgaria, the Netherlands and Norway) were identified. Site visits and group interviews with representatives from stakeholders of the partnerships were conducted. Interview data and answers to open ended questions from questionnaires were analysed. Results Three main findings became apparent through the analysis. Important enablers were: 1) person-to-person fit between individuals, 2) national incentive schemes for collaboration, and 3) formal partnership agreements that provided a framework that allowed for manoeuvring. The enablers identified are on a macro, miso and micro level. Furthermore, they can be categorised as political, organisational, and social. Conclusions The data support the notion that partnerships are complex social structures that need to be initiated and managed on different levels and with different measures. At the same time, data demonstrate that across different geographical, political, and social contexts the same enablers are reappearing as important for sustaining public health partnerships. Key messages Similar enablers for sustaining public health partnerships are found across geographical, political, and social contexts. Important enablers for partnerships are person-to-person fit, national incentive schemes, and formal agreements.

scholarly journals Evaluating the impact of exposure to environmental contaminants on human health

1996 ◽  
Vol 42 (8) ◽  
pp. 1345-1349 ◽  
Author(s):  
J B Silkworth ◽  
J F Brown
Keyword(s):  
Chemical Substances ◽  
The Public ◽  
Aromatic Hydrocarbon Receptor ◽  
Naturally Occurring ◽  
Synthetic Chemicals ◽  
Low Concentrations ◽  
Polycyclic Aromatic ◽  
Coplanar Polychlorinated Biphenyls ◽  
Proportional Contribution ◽  
The Impact

Abstract Humans are exposed daily to low concentrations of many different chemical substances, natural and some man-made. Although many of these substances can be toxic at high levels, typical exposures are far below the effect levels. The responses produced by man-made aromatic hydrocarbon receptor agonists, such as dioxins, polychlorinated dibenzofurans, coplanar polychlorinated biphenyls, and polycyclic aromatic hydrocarbons, are also produced, often to greater extents [corrected], by naturally occurring constituents of fried meat, cabbage, broccoli, cauliflower, cocoa, and curry. Our society seems to be concerned about the health risks associated only with the synthetic chemicals, regardless of their proportional contribution to the total agonist activity, and regulates on the basis of such concerns. It would be more protective of the public health to determine acceptable concentrations for each type of response, regardless of the origin of the inducing agent, and issue advisories or regulations accordingly.

scholarly journals Extending the Coverage of the Trust–Acceptability Model: The Negative Effect of Trust in Government on Nuclear Power Acceptance in South Korea under a Nuclear Phase-Out Policy

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3343
Author(s):  
Seungkook Roh ◽  
Hae-Gyung Geong
Keyword(s):  
South Korea ◽  
Nuclear Power ◽  
Public Acceptance ◽  
Equation Modeling ◽  
Trust In Government ◽  
The Public ◽  
Positive Effects ◽  
Negative Effect ◽  
Nuclear Phase ◽  
Phase Out

This article extends the coverage of the trust–acceptability model to a new situation of nuclear phase-out by investigating the effect of trust on the public acceptance of nuclear power, with South Korea as the research setting. Through the structural equation modeling of a nationwide survey dataset from South Korea, we examined the effects of the public’s trust in the various actors related to nuclear power on their perceptions of the benefits and risks of nuclear power and their acceptance of nuclear power. Contrary to previous studies’ findings, in South Korea, under a nuclear phase-out policy by the government, trust in government revealed a negative impact on the public acceptance of nuclear power. Trust in environmental non-governmental groups also showed a negative effect on nuclear power acceptance. In contrast, trust in nuclear energy authority and trust in nuclear academia both had positive effects. In all cases, the effect of a trust variable on nuclear power acceptance was at least partially accounted for by the trust’s indirect effects through benefit perception and risk perception. These findings strengthen the external validity of the trust–acceptability model and provide implications for both researchers and practitioners.

scholarly journals Catch 22: The Paradox of Social Media Affordances and Stigmatized Online Support Groups

2020 ◽  
Vol 6 (4) ◽  
pp. 205630512098447
Author(s):  
Daphna Yeshua-Katz ◽  
Ylva Hård af Segerstad
Keyword(s):  
Social Media ◽  
Support Groups ◽  
Computer Mediated Communication ◽  
Research Literature ◽  
Discussion Board ◽  
Online Support Groups ◽  
Post Traumatic Stress ◽  
Mediated Communication ◽  
The Public ◽  
Computer Mediated

This study highlights the challenges of computer-mediated communication for vulnerable individuals and groups, by studying boundary work in stigmatized communities online. Five stigmatized online communities with different affordances were studied: (1) “pro-ana” blogs; (2) an infertility discussion board; (3) a Facebook group for bereaved parents; and (4) two WhatsApp groups for Israeli veterans of war with post-traumatic stress disorder. In-depth interviews with members and administrators ( n = 66) revealed that social media affordances such as low anonymity and high visibility may marginalize those living with stigma. While research literature applauds social media for allowing the formation and maintenance of social capital, our study highlights the paradox caused by these very same affordances. To offer safe and functioning environments of support, the communities must guard against impostors whose presence threatens their safe havens. Simultaneously, this may make these groups inaccessible to those who truly need support and remove such groups from the public eye.

scholarly journals Radiation Dose Calculations for a Hypothetical Accident in Xianning Nuclear Power Plant

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Bo Cao ◽  
Junxiao Zheng ◽  
Yixue Chen
Keyword(s):  
Radiation Dose ◽  
Nuclear Power ◽  
Atmospheric Dispersion ◽  
Harmful Effect ◽  
Atmospheric Stability ◽  
Dispersion Modeling ◽  
Dose Calculations ◽  
Air Concentration ◽  
The Public ◽  
Ground Deposition

Atmospheric dispersion modeling and radiation dose calculations have been performed for a hypothetical AP1000 SGTR accident by HotSpot code 3.03. TEDE, the respiratory time-integrated air concentration, and the ground deposition are calculated for various atmospheric stability classes, Pasquill stability categories A–F with site-specific averaged meteorological conditions. The results indicate that the maximum plume centerline ground deposition value of1.2E+2 kBq/m2occurred at about 1.4 km and the maximum TEDE value of1.41E-05 Sv occurred at 1.4 km from the reactor. It is still far below the annual regulatory limits of 1 mSv for the public as set in IAEA Safety Report Series number 115. The released radionuclides might be transported to long distances but will not have any harmful effect on the public.

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