Day No. 9 since the quake and tsunami.
Media hysteria is abating as the crisis abates and Libya take s over the headlines. “It is becoming more probable by the day that public health consequences will be zero and radiation health effects among workers at the site will be so minor as to be hard to measure”.
On Saturday, workers were close to restoring power to cooling systems at a quake-hit Japanese nuclear power plant. Fire trucks sprayed water for nearly half a day on reactor No.3.
“The situation there is stabilizing somewhat,” Chief Cabinet Secretary Yukio Edano told a news conference.
2400 JST (1600 CET): Known status by IAEA:
It would seem that the current critical actions with the nuclear plant are connected – for now – with the spent fuel pools.
Unit 1 experienced an explosion on 12 March that destroyed the outer shell of the building’s upper floors. No precise information has been available on the status of the spent fuel pool.
For unit 2, no precise information has been available on the status of the spent fuel pool. Authorities began adding 40 tonnes of seawater to the spent fuel pool on 20 March.
Concerned by possible loss of water in the Unit 3 spent fuel pool, authorities began spraying water into the building in an effort to replenish water levels. First, helicopters dropped seawater on 17 March, and every day since then, including today, emergency workers have sprayed water from fire trucks and other vehicles.
Emergency workers began spraying water into the Unit 4 building today.
Temperatures in the spent fuel pools of Units 5 and 6 have gradually returned to significantly lower temperatures.

2230 JST ( 1430 CET): Status – Fukushima No. 5, No. 6 reactors stable after cold shutdown.
External power was restored at 3:46 p.m. to the reactor #2. Work is now ongoing to start trying to restore the system to monitor radiation and other data, light the control room and cool down the reactor and the reactor’s spent-fuel storage pool.
Water spraying by fire trucks continues for cooling the overheating spent fuel pools by throwing thousands of tons of water into the No. 3 and No. 4 reactor buildings. The operation is possible because apparent hydrogen explosions blasted the roofs and walls of the buildings.
As of 11:00 a.m., Tokyo Electric said the radiation level about 0.5 kilometer northwest from the No. 2 reactor dropped to 2,579 microsievert per hour, compared to 3,443 microsievert per hour at 2 p.m. Saturday.
1830 JST (1030 CET): Water spraying on reactor #4 again (2nd time today). Sounds like some danger of radioactive leakage from the spent-fuel pond is persisting.
Status summary (BBC)
- 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 overnight operation, but pressure said to be rising again
- 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
1800 JST (1000 CET): Power has “been supplied” to reactor #2 says Kyodo news. It is not clear if the power now available has succeeded in starting up cooling pumps or just that power is now available at reactor #2. Nevertheless a huge leap forward.
The Fukushima Daiichi nuclear power plant is most likely to be decommissioned. ”Looking at the situation objectively, it is clear,” Chief Cabinet Secretary Yukio Edano said at a news conference, when asked whether the government plans to decommission the plant.
1600 JST (0800 CET): Current evacuation area not expected to change according to Japan’s Nuclear Agency.
Spent-fuel storage pools of the reactors No. 5 and No. 6 were cooled down to 37.1 °C and 41.0 °C, respectively, as of 7 a.m. Sunday.
More than 2,000 tons of water is believed to have been sprayed onto the No. 3 reactor’s pool, which has a capacity of 1,400 tons. Pressure at No. 3 reactor’s containment vessel suppression pool rose and plans to reduce pressure by venting were planned but the pressure stabilised and immediate work to reduce pressure at No. 3 reactor at Fukushima plant was deferred.
Fears of radiation release led to Ground Self-Defense Force spraying about 80 tons of water on reactor #4 for nearly one hour until 9:30 a.m., according to the Defense Ministry. Eleven fire trucks were used. Indications are that that water reached the pool.
Work to connect power and restart cooling pumps at reactor #2 is continuing. It is planned to check the systems of the No. 2 reactor first. The building housing its containment was not damaged, which means it is hard to cool it down using water from outside.
0800 JST( 0000 CET): On Saturday and the early hours of this morning water spraying was carried out for a total of 13 hours (till about 5am on Sunday morning). The water temperature in the spent fuel pond of reactor #6 has fallen.

Power company engineers finished connecting the No.1 and No.2 reactors to external sources on Saturday evening.
Technicians seem to have attached a power cable to the No. 1 and No. 2 reactors, hoping to restore electricity later today prior to an attempt to switch the pumps on. Equipment checks are probably being conducted now.They aim to reach No. 3 and 4 soon after that.
The Register writes:
The situation at the Fukushima Daiichi nuclear powerplant in Japan, badly damaged during the extremely severe earthquake and tsunami there a week ago, continues to stabilise. It is becoming more probable by the day that public health consequences will be zero and radiation health effects among workers at the site will be so minor as to be hard to measure. Nuclear experts are beginning to condemn the international hysteria which has followed the incident in increasingly blunt terms.
0100 JST (1700 CET 19th): IAEA press conference on the situation at the Fukushima Daiichi nuclear power plant. It hopes that power will be restored to reactor 2 today, which will then act as a hub to restore power to reactor 1. However it is not clear if water pumps have been damaged and if they will even work once power has been restored.