What is it about?

To evaluate the working environment and internal exposure risk due to inhalation in the Specified Reconstruction and Revitalization Base of Tomioka town, Fukushima Prefecture, 137Cs radioactivity levels in the airborne dust at building demolition sites were analyzed by using gamma spectrometry.

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Why is it important?

The risk of internal exposure among workers due to airborne dust inhalation during building demolition has not been sufficiently evaluated. In particular, the national government and Tomioka town office pay attention to their internal radiation exposures due to the 137Cs that is present around residents’ houses, although they may not be directly exposed to airborne dust.

Perspectives

This case study of Tomioka town within the SRRB may be the first working environment model for evaluating the environmental contamination and internal exposure dose rates due to artificial radionuclides derived from a nuclear disaster.

Yasuyuki Taira
Nagasaki University, Atomic Bomb Disease Institute

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This page is a summary of: Assessment of localized and resuspended 137 Cs due to decontamination and demolition in the difficult‐to‐return zone of Tomioka town, Fukushima Prefecture, Integrated Environmental Assessment and Management, April 2022, Wiley, DOI: 10.1002/ieam.4625.
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