Novel method for estimation of the indoor-to-outdoor airborne radioactivity ratio following the Fukushima Daiichi Nuclear Power Plant accident

Tan, Yanliang; Ishikawa, Tetsuo; Janik, Mirosław; Tokonami, Shinji; Hosoda, Masahiro; Kearfott, Kimberlee J.

doi:10.1016/j.scitotenv.2015.07.034

Cited by 2 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Kulmala et al (1999) developed a computational model which predicted indoor aerosol concentrations, surface accumulation and an indoor/outdoor ratio, for radioactive aerosols. Tan et al (2015) derived an airborne sheltering factor (ASF) for Fukushima-originating aerosols, using indoor/outdoor radionuclide concentration data gathered from houses after the accident, together with values of air exchange rate, and indoor surface area and volume. The deposition velocity values used in the model for 131 I and 137 Cs were 2.50 × 10 -5 m s -1 and 1.94 × 10 -5 m s -1 but the charge on the aerosols was not measured.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

A Test Chamber Investigation of the Effect of Charging on Aerosol Deposition on Indoor Surfaces

Din

McGrath

Byrne

2020

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

Exposure to radioactive aerosols of accidental origin is harmful to human health. Radioactive aerosols have an ability to self-charge due to ionization, and this influences their deposition behavior, but this effect has been rarely studied. In a test chamber study, the effect is investigated by using a corona unit to apply charges that are representative of the levels found on radioactive particles to three aerosol size distributions of 0.5 μm, 1.0 μm and 2.0 μm. Aerosol deposition velocities were calculated for each particle size, two chamber airflow values, three aerosol charge regimes (high positive, high negative, and no corona charging), and three interior wall surfaces (aluminum, wallpaper, polyethylene). The results show no significant difference between deposition velocities of charged aerosols of opposite polarities, but a difference of up to 72% between deposition velocities of corona-charged and uncharged aerosols. For all aerosol sizes and charge regimes, aerosol deposition was found to be enhanced to the greatest degree when the chamber walls were lined with polyethylene, with values found to be up to 4-8 times higher than those calculated in aluminum-walled chamber cases.

show abstract

Section: Accepted Manuscriptmentioning

confidence: 99%

A Test Chamber Investigation of the Effect of Charging on Aerosol Deposition on Indoor Surfaces

Din

McGrath

Byrne

2020

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

show abstract

A Radiation Weather Station: Development of a Continuous Monitoring System for the Collection, Analysis, and Display of Environmental Radiation Data

et al. 2018

View full text Add to dashboard Cite

Due to heightened fear surrounding the possibility of future terrorism involving nuclear weapons and radiological dispersive devices, compounded by nonroutine nuclear power plant releases such as from emergencies or accidents, interest in contamination levels of environmental radiation has spiked. This project sought to develop a continuously operational radiation-monitoring system, with graphically visualized data easily accessible to the public. Because this continuing project is housed at a university facility, it bears no connection to perceived political or commercial interests, generally increasing the credibility of the endeavor. Outdoor weather and radiation parameters were gathered by sensors installed on the rooftop of a two-story building. A display and cloud service website was used to project the live data in an understandable format. A correlation was observed between weather and visibly heightened levels of gamma radiation. The goal of this paper is to share and highlight the overall hardware selection and the unique software challenges encountered when developing a robust collection and analysis system, along with the challenges of displaying meteorological and radiological data in a clear and concise fashion.

show abstract

Novel method for estimation of the indoor-to-outdoor airborne radioactivity ratio following the Fukushima Daiichi Nuclear Power Plant accident

Cited by 2 publications

References 16 publications

A Test Chamber Investigation of the Effect of Charging on Aerosol Deposition on Indoor Surfaces

A Test Chamber Investigation of the Effect of Charging on Aerosol Deposition on Indoor Surfaces

A Radiation Weather Station: Development of a Continuous Monitoring System for the Collection, Analysis, and Display of Environmental Radiation Data

Contact Info

Product

Resources

About