TEPCO: Explanations of the major events

TEPCO: State of the power station after the 2007 Niigata-Chuetsu-Oki Earthquake /Explanations of the major events

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∼ events related to radioactive materials ∼

Displacement of the ducts connected to the main exhaust stack (units 1 to 5).

Water puddle on the reactor building refueling floor.

Water inflow from the outdoor fire protection system piping into the unit 1 reactor combination building.

Leakage of water containing a trace of radioactivity into the sea via the non-controlled area of unit 6.

Iodine and radioactive particulate materials were detected at the main exhaust stack of unit 7.

∼ events not related to radioactive materials ∼

Fire at the unit 3 house transformer.

Drums tipped over in the solid waste storehouse.

Breakage on the coupling of the drive axis of the unit 6 reactor building ceiling crane.

Insulating oil leakage from transformers, etc.

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TEPCO: State of the power station after the 2007 Niigata-Chuetsu-Oki Earthquake /Explanations of the major events

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