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ICRP International

Conference on Recovery After Nuclear Accidents

Radiological Protection Lessons
from Fukushima and Beyond

December 1 - 18, 2020

A. Inoue, M. Imai, S. Koyama, H. Nitta, H. Ozaki, S. Aoyama, T. Hosoda

Updated: Dec 11, 2020

CTC Activities and Lessons Learned in Recovery and Reconstruction from the Great East Japan Earthquake and the Fukushima Daiichi Accident

A. Inoue, M. Imai, S. Koyama, H. Nitta, H. Ozaki, S. Aoyama, T. Hosoda (Chiyoda Technol Corporation)

CTC was severely damaged by the Great East Japan Earthquake and tsunami, which caused equipment damage, power outages, and disruption of logistics. This poster introduces our subsequent responses including supply of dosimeters, monitoring equipment and protective materials urgently needed at Fukushima Daiichi, individual dose measurement in Fukushima at first by passive dosimeter and later joined by active one “D-shuttle”, etc., and our lessons learned.

The lessons are:

1) Essence of Nuclear/Radiation Disasters

- Radiation is only an additional factor but needs bottom-hearted sincere communication.

- Prior to thinking about low-dose radiation effects comes maintaining physical and mental health.

- It is reassuring to understand the individual dose.

2) Preparation for Disaster

- Maintenance, storage and provision of nuclear disaster prevention materials and equipment in a container is essential.

- Passive (no power supply required) dosimeter is the last resort and indispensable.

- Multi-spectrometer for identifying released nuclides is effective.



井上 任、今井 盟、小山 重成、新田 浩、尾崎 英樹、青山 伸、細田 敏和 (株式会社千代田テクノル)











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