UPDATE 13 - Fukushima stabilizing but remains "very serious"

Electricity has been restored to three reactors at the Japanese nuclear plant wrecked by fire and explosions after the 11 March quake and tsunami.
However the cooling systems are not yet operating, and the UN nuclear watchdog, the IAEA, says the situation remains very serious, reports the BBC.
Engineers have restored power to three reactors at the crippled Fukushima Daiichi nuclear plant and hope to test water pumps soon.
Workers have been battling to cool reactors and spent fuel ponds to bring the radiation-leaking plant under control.  A plant spokesman says some workers were evacuated from the complex after smoke or vapour was seen rising from the No 3 reactor.
Villagers living near the plant have been told not to drink tap water due to higher levels of radioactive iodine.
"There have been some positive developments in the last 24 hours but overall the situation remains very serious," said Graham Andrew, a senior IAEA official.
"We consider that now we have come to a situation where we are very close to getting the situation under control," Deputy Cabinet Secretary Tetsuro Fukuyama said.
Some workers at the stricken facility were evacuated on Monday after smoke was seen rising from reactor No 3. The official death toll from the twin disaster has now risen to 8450 and nearly 13 000 people are still missing.
Reactor status 21 March 09:00 GMT
Reactor 1. Fuel rods damaged after explosion. Power lines attached;
Reactor 2. Damage to the core, prompted by a blast, helped trigger raising of the nuclear alert level. Power lines attached;
Reactor 3.Contains plutonium, core damaged by explosion. Fuel ponds refilled with water in operation;
Reactor 4. Hit by explosion and fire, temperature of spent fuel pond now said to have dropped after water spraying;
Reactors 5 & 6. Temperature of spent fuel pools now lowered after rising dangerously high. Diesel generators powering cooling systems.

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