Investigation into the reactor building of Fukushima Daiichi Nuclear Power Plant Unit 2
In the investigation of the accident at the TEPCO's Fukushima Daiichi Nuclear Power Station by the Nuclear Regulatory Commission, a study was conducted on March 30 to check the status of contamination inside the reactor building of Unit 2 and the operation of the robot was disclosed.
The Nuclear Regulatory Commission has resumed an investigation to analyze the details and causes of the accident since October last year, following the reduction in radiation levels at the site of the Fukushima Daiichi Nuclear Power Plant.
On the 30th, an investigation was conducted on the top floor of the Unit 2 reactor building, which melted down as nuclear fuel melted down nine years ago, and was released to the press.
Due to the high radiation dose at the site, robots were deployed instead of humans.
The operation was performed remotely from an important seismic isolation building in a remote location, and a robot equipped with radiation measuring equipment was checking the status of contamination while moving over the floor directly below the reactor.
It is thought that a large amount of gas containing radioactive material was released from the Unit 2 in the accident, but it is not known in detail how and under what circumstances the gas leaked out.
"We believe that the measurements were exhaustive and that we had sufficient data for the analysis. The results of the investigation helped with the accident analysis and the work required for the decommissioning, such as the removal of spent fuel," said Shuichi Kaneko of the NRA. I also want to help with exposure control in the United States. "
The Regulatory Commission intends to report the results of a series of investigations into a report.