Status of quake-stricken reactors at Fukushima nuclear power plan

The following is the known status as of Wednesday afternoon of each of the six reactors at the Fukushima No. 1 nuclear power plant and the four reactors at the Fukushima No. 2 plant, both in Fukushima Prefecture, which were crippled by Friday's magnitude 9.0 earthquake and the ensuing tsunami.

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FUKUSHIMA EVOLUTION NUCLEAR RADIATION LEVEL FROM JAPAN 2011_

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Fukushima No. 1 plant

-- Reactor No. 1 - Cooling failure, partial melting of core, vapor vented, building damaged Saturday by hydrogen explosion, seawater being pumped in.

-- Reactor No. 2 - Cooling failure, seawater being pumped in, fuel rods fully exposed temporarily, vapor vented, building damaged Monday by blast at Reactor No. 3, damage to containment vessel on Tuesday, potential meltdown feared.

-- Reactor No. 3 - Cooling failure, partial melting of core feared, vapor vented, seawater being pumped in, building damaged Monday by hydrogen explosion, high-level radiation measured nearby on Tuesday, plume of smoke observed Wednesday, damage to containment vessel likely.

-- Reactor No. 4 - Under maintenance when quake struck, fire Tuesday possibly caused by hydrogen explosion at pool holding spent fuel rods, pool water level not observed, fire observed Wednesday at building housing reactor, no water poured in to cool pool.

-- Reactor No. 5, No. 6 - Under maintenance when quake struck, temperature slightly rising in spent fuel pool.

Fukushima No. 2 plant

-- Reactor No. 1, No. 2, No. 4 - Cooling failure, then cold shutdown.

-- Reactor No. 3 - Cold shutdown.