Toshiba Develops New Device to Investigate Deposits in the interior of Primary Containment Vessel at Fukushima Daiichi Unit 2
R & D / Technology
Toshiba Energy Systems & Solutions Corporation
・The device is scheduled to ship to Fukushima today
・It is expected to be deployed to the interior investigation of the PCV at Unit 2 in February
Kawasaki, Japan — Toshiba Energy Systems & Solutions Corporation (hereinafter referred to as Toshiba ESS) today announced that it has developed a device that investigates the status of deposits at the bottom of the pedestal area interior of the primary containment vessel (PCV) of Fukushima Daiichi Nuclear Power Plant Unit 2.
A February 2017 investigation by Tokyo Electric Power Company Holdings (TEPCO) using a small robots, etc, developed by Toshiba ESS and the International Research Institute for Nuclear Decommissioning (IRID) found that part of the grating of the platform inside the PCV had been dropped. Toshiba ESS and IRID developed a suspended pan-tilt camera attached to a telescopic guiding pipe, and a subsequent investigation held in January 2018 showed that there were deposits at the bottom of the PCV.
Using know-how cultivated through previous investigations at Fukushima Daiichi Nuclear Power Plant, Toshiba ESS added a finger drive mechanism for touching the deposits to investigate their condition to the telescopic guiding pipe developed in last January.
Commenting on the development of the device, Goro Yanase, Vice President of the Nuclear Energy Systems & Services Div. at Toshiba ESS said, “We will continue to advance technology development and contribute to investigation of the interior of the Fukushima reactors.”
The device is scheduled to be shipped to Fukushima Prefecture today and deployed to the interior investigation of the PCV at Unit 2 in February after the installation.
Image of the device
|Features||One camera, LED Lighting,Pan-tilt mechanism, Finger drive mechanism,Radiation dosimeter, Thermometer|
|Radiation resistance||Approx. 1,000Gy (gray)|