Radiation imaging using a compact Compton camera inside the Fukushima Daiichi Nuclear Power Station building
Open Access
- 31 December 2017
- journal article
- research article
- Published by Informa UK Limited in Journal of Nuclear Science and Technology
- Vol. 55 (9), 965-970
- https://doi.org/10.1080/00223131.2018.1473171
Abstract
The Fukushima Daiichi Nuclear Power Station (FDNPS), operated by Tokyo Electric Power Company Holdings, Inc., went into meltdown in the aftermath of a large tsunami caused by the Great East Japan Earthquake of 11 March 2011. The measurement of radiation distribution inside the FDNPS buildings is indispensable to execute decommissioning tasks in the reactor buildings. We conducted a radiation imaging experiment inside the turbine building of Unit 3 of the FDNPS by using a compact Compton camera and succeeded in visualizing high-dose contamination (up to 3.5mSv/h). In addition, we drew a three-dimensional radiation distribution map inside the turbine building by integrating the radiation image resulting from the Compton camera into the point cloud data of the experimental environment acquired using a scanning LRF. The radiation distribution map shows the positions of these contaminations on a real space image of the turbine building. The radiation distribution map helps workers to easily recognize radioactive contamination and to decrease their own exposure to radiation because the contamination cannot be observed with the naked eye.Keywords
Funding Information
- Fukushima innovation coast initiative
This publication has 7 references indexed in Scilit:
- Gamma-Ray imaging for nuclear security and safety: Towards 3-D gamma-ray visionNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018
- First demonstration of aerial gamma-ray imaging using drone for prompt radiation survey in FukushimaJournal of Instrumentation, 2017
- Remote radiation imaging system using a compact gamma-ray imager mounted on a multicopter droneJournal of Nuclear Science and Technology, 2017
- A prototype of aerial radiation monitoring system using an unmanned helicopter mounting a GAGG scintillator Compton cameraJournal of Nuclear Science and Technology, 2015
- Performance and field tests of a handheld Compton camera using 3-D position-sensitive scintillators coupled to multi-pixel photon counter arraysJournal of Instrumentation, 2014
- Handy Compton camera using 3D position-sensitive scintillators coupled with large-area monolithic MPPC arraysNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013
- Performance of cerium-doped Gd3Al2Ga3O12 (GAGG:Ce) scintillator in gamma-ray spectrometryNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013