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Officials suggested that the Reactor 3 building was the most likely source, and said that its containment systems may have been breached. [31] The control room for Reactors 3 and 4 was evacuated at 10:45 JST but staff were cleared to return and resume water injection into the reactor at 11:30 JST. [ 32 ]
Containment systems for nuclear power reactors are distinguished by size, shape, materials used, and suppression systems. The kind of containment used is determined by the type of reactor, generation of the reactor, and the specific plant needs. Suppression systems are critical to safety analysis and greatly affect the size of containment.
The Fukushima nuclear accident was a major nuclear accident at the Fukushima Daiichi Nuclear Power Plant in Ōkuma, Fukushima, Japan, which began on 11 March 2011. The proximate cause of the accident was the 2011 Tōhoku earthquake and tsunami , which resulted in electrical grid failure and damaged nearly all of the power plant's backup energy ...
The operator of Japan's destroyed Fukushima Daiichi nuclear power plant demonstrated Tuesday how a remote-controlled robot would retrieve tiny bits of melted fuel debris from one of three damaged ...
On 29 March, Richard Lahey, former head of safety research for boiling-water reactors at General Electric, speculated that the reactor core may have melted through the reactor containment vessel onto a concrete floor, raising concerns of a major release of radioactive material, while failing to divulge the report by Dale G. Bridenbaugh which ...
Japanese authorities said they were forced to abandon plans Thursday to send in drones for a second day to probe one of the damaged reactors at the Fukushima Daiichi nuclear power plant because of ...
A drone small enough to fit in one's hand flew inside one of the damaged reactors at the wrecked Fukushima Daiichi nuclear power plant Wednesday in hopes it can examine some of the molten fuel ...
Potentially radioactive steam was released from the primary circuit into the secondary containment area to reduce mounting pressure in the core. [18] To cool the reactor, operators resorted to the plant's Emergency core-cooling systems (ECCS), including the isolation condensers, and the High Pressure Coolant Injection systems (HPCI).