A nuclear watchdog has asked the operator of Japan’s wrecked Fukushima nuclear power plant to assess potential risks from damage found in a key supporting structure inside the worst-hit of the three melted reactors.
A robotic probe inside the Fukushima Daiichi nuclear power plant's Unit 1 primary containment chamber found its pedestal — a main supporting structure right underneath the core — was largely damaged. The thick concrete exterior was missing almost all the way around, exposing the internal steel reinforcement.
