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Friday, March 18, 2011

Japan : Status of quake-stricken reactors at Fukushima nuclear power plants

Another report from Kyodo News, but there is no mention of the radiation levels at any of the reactors :

" The following is the known status as of Friday evening of each of the six reactors at the Fukushima Daiichi nuclear power plant and the four reactors at the Fukushima Daini plant, both in Fukushima Prefecture, which were crippled by the magnitude 9.0 earthquake and the ensuing tsunami on March 11.

Fukushima Daiichi plant

-- Reactor No. 1 - Operation suspended after quake, cooling failure, partial melting of core, vapor vented, building housing reactor damaged Saturday by hydrogen explosion, roof blown off, seawater being pumped in.

-- Reactor No. 2 - Operation suspended after quake, cooling failure, seawater being pumped in, fuel rods fully exposed temporarily, vapor vented, building housing reactor damaged Monday by blast at reactor No. 3, blast sound heard near suppression pool of containment vessel on Tuesday, damage to containment vessel feared.

-- Reactor No. 3 - Operation suspended after quake, cooling failure, partial melting of core feared, vapor vented, seawater being pumped in, building housing reactor damaged Monday by hydrogen explosion, high-level radiation measured nearby on Tuesday, plume of smoke observed Wednesday and presumed to have come from spent-fuel storage pool, seawater dumped over pool by helicopter on Thursday, water sprayed at it from ground on Thursday and Friday.

-- Reactor No. 4 - Under maintenance when quake struck, temperature in spent-fuel storage pool reaching 84 C on Monday, fire Tuesday possibly caused by hydrogen explosion at pool holding spent fuel rods, fire observed Wednesday at building housing reactor, pool water level feared receding, renewed nuclear chain reaction feared, only skeleton of building survived the fires.

-- Reactors No. 5, 6 - Under maintenance when quake struck, water temperatures in spent-fuel storage pools increased to about 64 C on Thursday.

-- Spent-fuel storage pools at all reactors - Cooling functions lost at all reactors, water temperatures or levels unobservable at reactors No. 1 to 4.

Fukushima Daini plant

-- Reactors No. 1, 2, 4 - Operation suspended after quake, cooling failure, then cold shutdown.
-- Reactor No. 3 - Operation suspended after quake, cold shutdown."

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