scholarly journals Absence of Detectable Radionuclides in Breast Milk in Sendai, Japan in 2012 Even by High-Sensitivity Determination: Estimated Dose among Infants after the Fukushima Nuclear Disaster

2021 ◽  
Vol 18 (11) ◽  
pp. 5825
Author(s):  
Zhaoqing Lyu ◽  
Sani Rachman Soleman ◽  
Tomoko Fujitani ◽  
Yukiko Fujii ◽  
Manal A. M. Mahmoud ◽  
...  
Keyword(s):  
Breast Milk ◽  
High Sensitivity ◽  
Minimum Detectable Activity ◽  
Activity Level ◽  
Internal Exposure ◽  
Dietary Intakes ◽  
Detectable Activity ◽  
Nuclear Disaster ◽  
Exposure Limit ◽  
Fukushima Nuclear Disaster

The aim of this study was to estimate radionuclide levels in breast milk and the transferred dose to their infants in Sendai (100 km from Fukushima), Japan after the 2011 Fukushima nuclear disaster. Radionuclide concentrations were analyzed in 101 specimens of breast milk collected in 2012. Median values for minimum detectable activities were 0.39, 0.34, 1.1, 1.89, and 17.1 Bq/kg for 137Cs, 134Cs, 131I, 110mAg, and 40K, respectively. Only radionuclides from 40K were detected. To estimate potential exposure and radiocesium dose, we assumed that the samples contained each minimum detectable activity level. The mean minimum detectable activity concentrations (standard deviation) of 137Cs and 134Cs were 0.42 (0.15) and 0.37 (0.14) Bq/kg, respectively. Means of estimated dietary intakes of 137Cs and 134Cs among infants were 0.35 (0.12) and 0.31 (0.11) Bq/day, respectively. The committed effective doses of radiocesium in infants aged 3 and 12 months via breastmilk were estimated at 5.6 (2.1) and 3.3 (1.2) μSv/year, respectively. Dietary intakes of 137Cs and 134Cs in breastfeeding mothers were back-calculated at 1.9 (0.71) and 1.7 (0.65) Bq/day, respectively. The study verified no discernible exposure to radionuclides among infants. The most conservative estimates were below the Japanese internal exposure limit of 1 mSv/year.

scholarly journals Radiocesium contamination and estimated internal exposure doses in edible wild plants in Kawauchi Village following the Fukushima nuclear disaster

PLoS ONE ◽  
2017 ◽  
Vol 12 (12) ◽  
pp. e0189398 ◽  
Author(s):  
Rimi Tsuchiya ◽  
Yasuyuki Taira ◽  
Makiko Orita ◽  
Yoshiko Fukushima ◽  
Yuukou Endo ◽  
...  
Keyword(s):  
Internal Exposure ◽  
Wild Plants ◽  
Edible Wild Plants ◽  
Nuclear Disaster ◽  
Fukushima Nuclear Disaster

A SCREENING SURVEY EXERCISE FOR THYROID INTERNAL EXPOSURE FROM RADIOIODINE AFTER A NUCLEAR ACCIDENT

2018 ◽  
Vol 183 (4) ◽  
pp. 483-488 ◽  
Author(s):  
Kazuaki Yajima ◽  
Eunjoo Kim ◽  
Kotaro Tani ◽  
Hideo Tatsuzaki ◽  
Chunsheng Li ◽  
...  
Keyword(s):  
Background Radiation ◽  
Point Sources ◽  
Nuclear Accident ◽  
Internal Exposure ◽  
Radiation Level ◽  
Dose Rates ◽  
Nuclear Disaster ◽  
Intervention Level ◽  
Fukushima Nuclear Disaster ◽  
Screening Survey

Abstract In the aftermath of the 2011 Fukushima nuclear disaster, a screening survey for thyroid internal exposure from intake of radioiodine was performed on 1080 children using handheld NaI(Tl) survey meters. This article presents the design and results of a practical exercise conducted to develop the skills of personnel who would be potentially engaged in such a survey. Participants of this exercise were asked to measure manikin heads in which point sources were installed under normal (~0.05 μSv h−1) and elevated (~0.5 μSv h−1) background conditions. The results demonstrated that the measurements were less dependent on the background radiation level, and the deviation of net signals obtained by the participants were within 10–20% for dose rates above 0.2 μSv h−1. This result suggests that dose rates can be reliably obtained above a provisional operational intervention level for the device, 0.5 μSv h−1 under a real nuclear accident situation.

scholarly journals Implementation of iodine biokinetic model for interpreting I-131 contamination in breast milk after the Fukushima nuclear disaster

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Kotaro Tani ◽  
Osamu Kurihara ◽  
Eunjoo Kim ◽  
Satoshi Yoshida ◽  
Kazuo Sakai ◽  
...  
Keyword(s):  
Breast Milk ◽  
Nuclear Disaster ◽  
Biokinetic Model ◽  
Fukushima Nuclear Disaster

scholarly journals Difference in the Cesium Body Contents of Affected Area Residents Depending on the Evacuation Timepoint Following the 2011 Fukushima Nuclear Disaster

2020 ◽  
Vol 119 (6) ◽  
pp. 733-745 ◽  
Author(s):  
Yu Igarashi ◽  
Eunjoo Kim ◽  
Shozo Hashimoto ◽  
Kotaro Tani ◽  
Kazuaki Yajima ◽  
...  
Keyword(s):  
Affected Area ◽  
Nuclear Disaster ◽  
Fukushima Nuclear Disaster

scholarly journals The associations between whole grain and refined grain intakes and serum C-reactive protein

2021 ◽  
Author(s):  
Riikka E. Taskinen ◽  
Sari Hantunen ◽  
Tomi-Pekka Tuomainen ◽  
Jyrki K. Virtanen
Keyword(s):  
Disease Risk ◽  
High Sensitivity ◽  
Epidemiological Studies ◽  
Whole Grains ◽  
Dietary Factors ◽  
Low Grade ◽  
Dietary Intakes ◽  
Whole Grain ◽  
Refined Grains ◽  
Hs Crp

Abstract Background/objectives Epidemiological studies suggest that whole grain intake has inverse associations with low-grade inflammation, but findings regarding refined grains are inconclusive. Our objective was to investigate whether consumption of whole or refined grains is associated with serum high sensitivity CRP (hs-CRP). Subjects/methods The study included 756 generally healthy men and women aged 53–73 years from the Kuopio Ischaemic Heart Disease Risk Factory Study, examined in 1999–2001. Dietary intakes were assessed using 4-day food records. ANCOVA and linear regression were used for analyses. Results The mean intake of whole and refined grains was 136 g/day (SD 80) and 84 g/day (SD 46), respectively. Higher whole grain intake was associated with lower hs-CRP concentration and higher refined grain intake with higher concentration after adjustment for lifestyle and dietary factors. Each 50 g/d higher whole grain intake was associated with 0.12 mg/L (95% Cl 0.02–0.21 mg/L) lower hs-CRP concentration and each 50 g/d higher refined grain intake with 0.23 mg/L (95% Cl 0.08–0.38) higher concentration. Adjustment for fibre from grains attenuated the associations especially with whole grains. There were no statistically significant interactions according to gender or BMI (P for interactions >0.065). Conclusions The results of this study suggest that higher intake of whole grains is associated with lower concentrations of hs-CRP and higher intake of refined grains is associated with higher concentrations. However, especially the association with whole grain intake was attenuated after adjusting for fibre intake from grains, suggesting that cereal fibre may partly explain the association.

The holistic risk analysis of spent fuel pool considering the fuel route risk

2021 ◽  
pp. 1748006X2199851
Author(s):  
Zhixin Xu ◽  
Ming Wang ◽  
Binyan Song ◽  
WenYu Hou ◽  
Chao Wang
Keyword(s):  
Nuclear Power ◽  
Comprehensive Evaluation ◽  
Point Of View ◽  
Spent Fuel ◽  
Nuclear Disaster ◽  
Evaluation Approach ◽  
Fuel Assemblies ◽  
Spent Fuel Pool ◽  
Large Water ◽  
Fukushima Nuclear Disaster

The Fukushima nuclear disaster has raised the importance on the reliability and risk research of the spent fuel pool (SFP), including the risk of internal events, fire, external hazards and so on. From a safety point of view, the low decay heat of the spent fuel assemblies and large water inventory in the SFP has made the accident progress goes very slow, but a large number of fuel assemblies are stored inside the spent fuel pool and without containment above the SFP building, it still has an unignored risk to the safety of the nuclear power plant. In this paper, a standardized approach for performing a holistic and comprehensive evaluation approach of the SFP risk based on the probabilistic safety analysis (PSA) method has been developed, including the Level 1 SFP PSA and Level 2 SFP PSA and external hazard PSA. The research scope of SFP PSA covers internal events, internal flooding, internal fires, external hazards and new risk source-fuel route risk is also included. The research will provide the risk insight of Spent Fuel Pool operation, and can help to make recommendation for the prevention and mitigation of SFP accidents which will be applicable for the SFP configuration risk management.

Healing Fukushima: Radiation hazards and disaster medicine in post-3.11 Japan

2019 ◽  
Vol 49 (3) ◽  
pp. 333-354 ◽  
Author(s):  
Shi Lin Loh ◽  
Sulfikar Amir
Keyword(s):  
Public Health ◽  
Nuclear Power ◽  
Radiation Risk ◽  
Disaster Medicine ◽  
Radiation Hazards ◽  
Medical Practitioners ◽  
Life And Death ◽  
Nuclear Disaster ◽  
Fukushima Nuclear Disaster

What happens when expertise is forced to face disasters of unprecedented scales? How is knowledge produced in critical moments when every action and decision is a matter of life and death? And how are local social networks mobilized to cope with unforeseen crisis? This paper addresses these questions by examining the emergence of disaster medicine expertise in the aftermath of Fukushima nuclear disaster that struck Japan in 2011. Studies on Fukushima’s impact have to date revolved around the suffering of Tōhoku citizens and the development of Japan’s nuclear energy industry. Acknowledging the gravity of such work, this paper offers an alternative, but equally crucial angle on the disaster: that of the medical caregiving and public health system built in response to radiation hazards resulting from the triple meltdowns at Fukushima Daiichi nuclear power station. Through detailed interviews conducted with eight medical practitioners in Fukushima Prefecture, this paper analyses the significance and impact of Japan’s most recent radiation disaster on its public health infrastructure. To describe the contingent nature of radiation disaster medicine developed in response to radiation risk in Fukushima, we draw on Jasanoff’s characterization of scientific knowledge as ‘serviceable truths’ with regards to public policy and the law, suggesting that expertise in relation to disasters is usefully understood in analogous terms.

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