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Status of quake-stricken reactors at Fukushima nuclear power plants TOKYO, March 16, Kyodo The following is the known status as of Tuesday evening 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, crippled by Friday's magnitude 9.0 earthquake and ensuing tsunami. Fukushima No. 1 -- Reactor No. 1 - Cooling failure, partial melting of core, vapor vented, hydrogen explosion, seawater pumped in. -- Reactor No. 2 - Cooling failure, seawater pumped in, fuel rods fully exposed temporarily, vapor vented, damage to containment system, potential meltdown feared. -- Reactor No. 3 - Cooling failure, partial melting of core feared, vapor vented, seawater pumped in, hydrogen explosion, high-level radiation measured nearby. -- Reactor No. 4 - Under maintenance when quake struck, fire caused possibly by hydrogen explosion at pool holding spent fuel rods, pool water level feared receding. -- Reactor No. 5 - Under maintenance when quake struck, temperature slightly rising at spent fuel pool. -- Reactor No. 6 - Under maintenance when quake struck, temperature slightly rising at spent fuel pool. Fukushima No. 2 -- Reactor No. 1 - Cooling failure, then cold shutdown. -- Reactor No. 2 - Cooling failure, then cold shutdown. -- Reactor No. 3 - Cold shutdown. -- Reactor No. 4 - Cooling failure, then cold shutdown. ==Kyodo
Fire breaks out again at Fukushima's No. 4 reactor: TEPCO TOKYO, March 16, Kyodo A fire broke out again early Wednesday at the troubled No. 4 reactor of the quake-hit Fukushima No. 1 nuclear power plant, Tokyo Electric Power Co. said. Around 5:45 a.m., a worker at the plant saw flames on the fourth floor of the reactor's building, believed to be the same spot where an apparent hydrogen explosion caused a fire Tuesday morning in the wake of last Friday's magnitude 9.0 earthquake. The plant operator said it has reported the incident to firefighters and local governments. On Tuesday, the utility said water in a pool storing spent nuclear fuel rods at the reactor may be boiling and its level has dropped, exposing the rods, prompting the government to order Tokyo Electric to inject water into the pool ''as soon as possible to avert a major nuclear disaster.'' Unless the spent fuel rods are cooled down, they could be damaged and emit radioactive substances.
An official from the International Atomic Energy Agency (IAEA) said in December 2008 that safety rules were out of date and strong earthquakes would pose a "serious problem" for nuclear power stations. The Japanese government pledged to upgrade safety at all of its nuclear plants, but will now face inevitable questions over whether it did enough. While it responded to the warnings by building an emergency response centre at the Fukushima plant, it was only designed to withstand magnitude 7.0 tremors. Friday's devastating earthquake was a magnitude 9.0 shock. The news is likely to put further pressure on Japan's Prime Minister, Naoto Kan, who has been criticised for "dithering" over the country's response to the ongoing crisis at the Fukushima nuclear power plant.
Originally posted by jimmy909
reply to post by MedievalGhost
New York-Tokyo flights for airline crew: 9 mSv/year
Smoking 1.5 packs/day: 13 mSv/year
Gastrointestinal series X-ray investigation: 14 mSv
Current average limit for nuclear workers: 20 mSv/year
Background radiation in parts of Iran, India and Europe: 50 mSv/year
Lowest clearly carcinogenic level: 100 mSv/year
Criterion for relocation after Chernobyl disaster: 350 mSv/lifetime
Highest recorded radiation at Fukushima I: 400 mSv/hr[7