Situación Nuclear en Japón [actualizado a diario][Reuters]
Noticias | Hace más de 3 años
Actualizado a diario. Fuente: Reuters. Traducido por mi.
Lo que me llevo a hacer este post es que he visto una o dos fuentes solamente que me dicen lo que quiero: toda la verdad, y nada mas que la verdad. Por eso, aca se los traigo desde Reuters en ingles, la linea del tiempo de como se dieron las cosas, y la voy a actualizar a diario. Para los que les interesa seguir esto al mas minimo detalle, aca esta. Traducido por mi, a medida que puedo. Las noticias mas viejas estan en ingles. Las mas nuevas, arriba. De paso, no crean nada de lo que ven en la tele o en los diarios, la mayoria es pornografia del desastre, para vender mas. (aclaracion: solo voy a traducir las cosas que me parezcan relevantes). La idea de este post es que se puedan mantener actualizados al respecto. Si tiene exito el post (puntos, comentarios) voy a traducir mas noticias viejas. Las mas nuevas las posteare traducidas siempre.
Horas dadas en el huso horario estandar de Japon (Hora en Argentina +12 horas)
22:09 - TEPCO ha dicho que puede llevar dias restaurar la energia electrica a los reactores #3 y #4
The operator of Japan's crippled nuclear power plant says it may take several days for power to be restored at the No.3 and No.4 reactors.
21:51 - Los reactores de la planta nuclear Fukushima Daiichi muestran cierta mejora, pero la situacion todavia se desconoce, segun el ministro Japones, Tetsuoro Fukuyama.
Reactors at stricken Fukushima Daiichi nuclear power plant are showing some improvement but the situation remains uncertain, Tetsuro Fukuyama, Japan's deputy chief cabinet secretary says.
17:23 - Los ingenieros han restaurado el suministro de energia electrica al reactor #2 en el noreste de Japon, segun la agencia de noticias Kyodo. Tambien se dice que TEPCO planea reastaurar el funcionamiento del cuarto de control, las luces y el sistema de refrigeracion en el reactor #1, que esta conectado al #2 por cable.
Engineers have restored power to the crippled reactor No. 2 in northeast Japan, Kyodo news agency says. It also said that Tokyo Electric Power Company aimed to restore the control room function, lights and the cooling function at the No. 1 reactor, which is connected to the No.2 reactor by cable.
16:53 - Kansay Energia Electrica de Japon va a demorar 2 semanas la apertura de dos plantas nucleares en Japon.
Japan's Kansai Electric Power plans to delay the reopening of two nuclear power plants by about two weeks, news agency Kyodo says, without quoting a source.
16:37 - El gobierno japones va a decidir el lunes si va a restringir el consumo y envio de alimentos producidos en la vecinidad de la planta nuclear en problemas despues de que niveles mayores a lo normal fueran detectados en la leche y espinaca de la zona.
The Japanese government will decide by Monday on whether to restrict consumption and shipments of food products from the area in the vicinity of a quake-hit nuclear complex, after higher-than-normal levels of radiation were found in milk and spinach from the area.
00:29 - El observador de Naciones Unidas dice que no es seguro que las bombas de agua atacadas por el desastre van a funcionar una vez conectadas nuevamente con energia electrica (nota: a este punto el plan es volver a conectar lsa bombas de agua de la planta misma, las que la enfriaban en situaciones de funcionamiento normal, que serian mas efectivas que tirar agua con helicopteros).
The U.N. nuclear watchdog says it is unclear whether water pumps at Japan's disaster-hit nuclear power plant will work once power is restored.
22:42 - Una muestra de agua potable de Tokio muestra niveles diminutos de yodo radioactivo, segun el gobierno japones. La muestra contenia 1.5 bequerels por kilo de yodo-131, muy por debajo del limite tolerable de 300 bequerel por kilo, agrego el gobierno.
A sample of tap water from Tokyo shows a tiny level of radioactive iodine, the government said. The sample contained 1.5 becquerals per kg of iodine 131, well below the tolerable limit for food and drink of 300 becquerals per kg, the government added.
18:01 - Los ingenieros pudieron conectar un cable conductor a los reactores, pero no pasaran corriente hasta que se conecte el cable a la red (nota: no hay necesidad de corriente todavia porque resta restaurar la funcionalidad de los cuartos de control y asegurarse que las bombas de agua funcionan).
Engineers attach a power cable to one of Japan's quake-stricken reactors but electricity has yet to be switched on, the nuclear safety agency said.
16:13 - El vocero principal de Japon dijo que se han detectado niveles de radiacion por encima de lo normal en la leche y la espinaca producida en la zona de la planta nuclear.
Japan's top government spokesman says tests detect radiation above the national safety level in spinach and milk produced near the Fukushima nuclear plant.
06:08 - El gobierno estadounidence dice que cantidades minusculas de radiacion han sido detectadas en Sacramento, California, paro que niveles de radiaciones preocupantes NO han sido detectados en EEUU.
The U.S. government says that "miniscule" amounts of radiation are detected in Sacramento, California, but that no radiation levels of concern have been uncovered in United States.
03:30 - TEPCO (Tokio Electric Power Co.) dijo que han conectado una linea de transmision (electrica) externa a la planta y confirmaron que es posible transmitirle energia. La comañia dijo en el comunicado que planea suministrar energia al reactor #2 primero, despues el #1, el #3 y ultimo el #4... porque la unidad #2 se supone ha sufrido menos daños.
TEPCO said it had connected an external transmission line with the stricken plant and confirmed that electricity could be supplied.
The company said in a statement it "planned to supply Unit 2 first, followed by Unit 1, Unit 3 and Unit 4 ... because Unit 2 is expected to be less damaged".
Aca hay una explicacion grafica de la BBC de la situacion hasta ahora, esta en ingles, no la puedo traducir. Espero que los dibujos sean suficiente...
21:02 - Ingenieros japoneses no pueden confimrar que los reactores dañados esten bajo control, segun el director general de la Agencia de Seguridad Nuclear e Industrial, Hideohiko Nishiyama.
Japanese engineers cannot say if damaged nuclear reactors are under control, Hideohiko Nishiyama, deputy director general of the Nuclear and Industrial Safety Agency, told reporters.
20:02 - Japan's Prime Minister Naoto Kan, under increasing pressure for his handling of the aftermath of the country's devastating earthquake and nuclear crisis, may visit worst-hit areas of the northeast next week, a senior official said on Friday.
20:01 - Es posible que se restaure el suministro de energia electrica al reactor #4 el sabado.
Electricity could be restored on Saturday morning at the No.4 reactor at the crippled Fukushima Daiichi nuclear power plant in northeast Japan, TEPCO said.
18:11 - Japan has raised the incident level at the nuclear reactor, the U.N. nuclear watchdog reported on a monitoring website.
The entry gave the accident at the Fukushima Daiichi site a level 5 rating, up from level 4 previously on a 1-7 scale.
17:53 - Es posible que se restaure el suministro de energia electrica a los reactores #1 y #2 el sabado, anuncio el viernes la agencia de seguridad nuclear nipona.
Electricity could be restored on Saturday morning at the No.1 and No.2 reactors, the country's nuclear safety agency said on Friday. The agency also raised the incident level at reactors No.1, No.2, and No.3 at the Daiichi plant to level 5 from level 4.
10:04 - La agencia de seguridad nuclear japonesa dijo que esta al tanto de la "solucion Chernobyl" que como ultimo recurso se taparia las plantas con arena y luego con cemento, pero agrego que por ahora se estan concentrando esfuerzos en restaurar la energia electrica a las plantas y enfriar los reactores.
Japan's nuclear safety agency said it was aware of the ultimate "Chernobyl solution" to contain the nuclear disaster at the quake-hit plant by covering it in sand and encasing it in concrete, but added that it was currently focusing on efforts to restore power and cool down the reactors.
09:20 - Humo blanco o vapor se vio saliendo de los reactores #2,3,4 dijo la agencia de seguridad nuclear japonesa el viernes. Se cree que todavia hay agua en los piletones de combustible depleto en el reactor #3.
White smoke or steam was rising from reactors 2, 3 and 4, the nuclear safety agency said on Friday. It said it believed there was still water in the spent fuel pool at reactor No.3.
21:39 - La agencia de seguridad nuclear japonesa dijo que el pileton de combustible radioactivo depleto (gastado/usado) en el reactor #4 sigue siendo una preocupacion.
Japan's nuclear safety agency said a pool for cooling spent nuclear fuel at the No.4 reactor of the stricken plant remains a serious concern.
21:07 - TEPCO dijo que ha empezado los trabajos para conectar los cables electricos para re-establecer el suministro de energia electrica a las plantas, a finalizar posiblemente el jueves.
TEPCO said it had started work to connect outside power cables to the plant and that electricity could be connected on Thursday.
17:37 - Tres de los seis reactores nucleares en la planta nuclear Fukushima Daiichi en el norte de Japon ya estan en situacion estable, segun oficiales del gobierno japones.
Three of the six reactors at the earthquake-hit Fukushima Daiichi nuclear plant in northern Japan are now relatively stable, officials say.
17:20 - Pequeñas concentraciones de particulas raioactivas se dirigen hacia el este de la planta, hacia Norteamerica, dijo un oficial sueco. Dijo que los niveles de radioactividad NO son preocupantes.
Low concentrations of radioactive particles are heading eastwards from the plant toward North America, a Swedish official says. The official at the Swedish Defense Research Institute, a government agency, was citing data from international monitoring stations. Levels were not dangerous for people, he says.
16:27 - Se esperan apagones en Tokyo si la demanda de energia electrica supera las de esta mañana, dice el ministro de comercio de Japon.
An unexpected, large-scale power outage is possible in Tokyo and surrounding areas on Thursday evening if power demand exceeds this morning's, Japan's trade minister says.
12:59 - U.S. State Department authorizes voluntary departure from Japan of family members of diplomatic staff.
11:24 - TEPCO dice que la presion esta elevandose en el reactor #3. Dice que todavia hay agua en los piletones de combustible nuclear depleto (usado/gastado). El miercoles la compañia describio la situacion como "no tan buena." La comision de regulacion nuclear de EEUU dijo el miercoles que no hay agua en tal pileton.
Oficiales de TEPCO expresaron la esperanza de poder conectar la energia electrica a la planta para ayudar a bombear agual, pero no todavia para los reactores #3 y #4.
TEPCO says pressure is rising again at reactor No. 3. It says there was still water in its spent-fuel pool. On Wednesday, the company described the situation there as "not so good." The U.S. Nuclear Regulator Commission said on Wednesday there was no water in the pool.
Company officials express hope of getting limited power to the plant to help pump water but not yet for reactors 3 and 4.
10:30 - La agencia de noticias Kyodod dijo que los Estados Unidos va a volar un drone de reconocimiento con sensores infrarojos sobre la planta para ver que esta sucediendo en su interior.
Kyodo news agency says the United States will fly a high-altitude drone equipped with infrared sensors over the plant to help determine what is happening inside.
09:55 - Australia issues new appeal to nationals in Tokyo and eight other prefectures to consider leaving Japan.
08:38 - Helicoptero militar japones comienza a dejar caer agua sobre la planta de energia, dice la agencia de seguridad. Oficiales dijeron que 2 de 4 lanzamientos dieron en el objetivo.
A Japanese military helicopter begins spraying water on the plant, the Defense Agency is quoted as saying. Officials later say two of four water drops hit their mark.
07:43 - Japan's weather agency said winds near the plant are forecast to blow from the northwest on Thursday toward the Pacific Ocean.
06:06 - The Nuclear and Industrial Safety Agency says radiation levels at the Fukushima plant had fallen over the past 24 hours. A reading of 338 microsieverts per hour was recorded at the main gate at 05:00 against 752 12 hours earlier. The government appeals to private companies to deliver supplies to quake victims.
02:58 - Britain advises its citizens in Japan to consider leaving Tokyo and the area north of the capital.
21:48 - La agencia de seguridad nuclear japonesa dice que quieren usar la milicia para ayudar a bombear agua en el reactor #3 y al pileton de combustible depleto en el reactor #4.
Japan wants to use its military to help pump water to the No.3 reactor and into a spent-fuel pool at the No.4 reactor of a quake-stricken nuclear plant, the nation's nuclear safety agency says.
Radiation levels at a monitoring post outside the Fukushima Daiichi plant had spiked at 0330 GMT to 10,850 microsieverts per hour, but fell back later to 2,331 microsieverts an hour later, it says.
21:01 - Es posible que haya daños mayores en el reactor #3.
Major damage is unlikely to have been sustained at the No.3 reactor of Japan's quake-stricken nuclear power plant, Kyodo reports, quoting the government.
19:53 - La policia japonesa intentara enfriar el pileton de combustible depleto en el reactor #4 con un camion hidrante.
Japanese police will attempt to cool the spent nuclear fuel pool at the No. 4 reactor at the stricken Fukushima Daiichi nuclear plant using a water cannon truck as early as Wednesday night, NHK television says.
19:47 - No se ha detectado yodo o cesio radioactivo en el agua potable de la prefectura japonesa de Fukushima.
No radioactive iodine or cesium was found in the tap water of Japan's Fukushima prefecture, Kyodo news agency reports, quoting the local government.
18:29 - Segun TEPCO se esta llenando de agua los reactores #5 y#6 de la planta nuclear Fukushima Daiichi.
Water is being poured into reactors No.5 and No.6 at Fukushima's Daiichi nuclear power plant, the operating company says.
18:14 - Un helicoptero no pudo dejar caer agua en el reactor por los altos niveles de radioactividad en la zona.
A helicopter was unable to drop water to cool a quake-stricken reactor in northeastern Japan probably because of the high radiation, Kyodo news agency says, quoting the Defense minister.
18:00 - El vocero principal japones dijo que los niveles de radiacion en la zona de la planta no eran suficientes para posar un riesgo inmediato a la salud.
Japan's top government spokesman says radiation levels around the nuclear plant are not at levels to cause an immediate health risk.
(hasta aqui llegue por ahora con la traduccion)
17:32 - The World Health Organization's representative in China says there is no evidence of any significant international spread of radiation from the nuclear site.
17:26 - The operator of Japan's quake-stricken nuclear power complex, Tokyo Electric Power Co Ltd, says it is unable to resume work on cooling reactors due to radiation risk.
16:55 - Operator says as of 0230 GMT there were 180 workers on site at the damaged nuclear power complex.
16:55 - Tokyo Electric Power Co says it recorded the site's highest levels of radiation at the No.3 reactor on Wednesday.
16:05 - The temperature stabilized and pressure dropped at the No. 2 reactor, the plant operator said.
13:27 - Japan's nuclear safety agency says operators of the damaged nuclear plant plan to bulldoze an emergency route to the facility to allow access for fire trucks.
11:38 - Japan may seek direct U.S. military help to end the crisis at the plant, the chief government spokesman says.
11:30 - It is not realistic to think that the No. 4 reactor at the plant will "reach criticality", the chief government spokesman says.
11:19 - The radiation reading at the main gate of the plant rose sharply just after 0100 GMT on Friday and started to fall almost an hour later, the government says.
11:10 - A fuel pool at the No.3 reactor at the Fukushima Daiichi plant may have heated and produced steam, TEPCO says. Media images earlier showed white smoke drifting from the plant.
11:38 - Japan may seek direct U.S. military help to end the crisis at the plant, the chief government spokesman says.
TUESDAY, MARCH 15
20:54 - Radiation levels at the No. 4 reactor of the Fukushima Daiichi nuclear-power plant has become too high to conduct normal work from its control room, Kyodo news agency says. Workers cannot stay long and are going in and out of the control room as well as monitoring from a different place.
20:50 - The radiation level in the Japanese capital, Tokyo, is 10 times normal, but there is no threat to human health, the city government says.
19:09 - Winds are now dispersing radioactive material from the Japanese nuclear crisis over the Pacific Ocean, away from Japan and other Asian countries, the World Meteorological Organization (WOMB) says.
18:20 - Japan's nuclear safety agency says there are two holes of 8-metres square in a wall of the outer building of the quake-hit Fukushima Daiichi No.4 reactor after a blast in the morning.
18:06 - Radiation levels in Chiba prefecture, near Tokyo, are more than 10 times above normal levels, Kyodo reports.
18:01: TEPCO has pulled out 750 workers from the plant since Tuesday, and 50 remain, it says.
17:48 - A pool containing spent fuel at the No.4 reactor may be boiling and the water level may be falling, Kyodo news agency quoted an official at the reactor's operator as saying.
17:31 - Japan has told the U.N. Agency radioactivity was being released "directly" into the atmosphere, the IAEA says.
17:28 - Radiation levels fall at the plant, the government says. Chief Cabinet Secretary Yukio Edano says the radiation level at the main gate of the Fukushima Daiichi complex is 596.4 microsieverts per hour as of 0630 GMT, down from 11,930 microsieverts at 0000 GMT.
16:44 - Japan has told the United Nations nuclear watchdog (IAEA) that it has extinguished a fire at the spent fuel storage pond at the power plant, the Vienna-based agency says.
14:46 - Radiation levels in the city of Maebashi, 100 km north of Tokyo, are up to 10 times normal, Kyodo says, quoting the city government.
14:07 - A no-fly zone is established for a 30-km radius around the plant, Jiji news agency says, quoting the transport ministry.
14:03 - Prime Minister Kan sends a text message to mobile phone users across the country, asking them to conserve power.
14:00 - Radiation levels in Tokyo are "not a problem", the city government says.
12:37 - Minute levels of radiation have been detected in Tokyo, Kyodo says, quoting local government.
12:03 - Winds over the plant are blowing in a southwesterly direction that includes Tokyo, but will shift later on Tuesday, the weather agency says.
11:57 - Japan's science minister has asked local governments to make more frequent radiation checks, Kyodo news agency says.
The agency also says there has been one explosion at the No. 4 reactor at a stricken plant.
11:08 - Risk of a nuclear leakage is rising, Prime Minister Naoto Kan says, and warns people within a 30-km radius to stay indoors.
11:41 - Radiation levels in Kanaka prefecture, west of Tokyo, are up to nine times the normal level briefly on Tuesday, Kyodo news agency says, quoting the prefecture government.
11:08 - Risk of a nuclear leakage is rising, Prime Minister Naoto Kan says, and warns people within a 30-km radius to stay indoors.
10:03 - The nuclear safety agency says it is unsure if the explosion at the reactor has damaged one of its reactor containment vessels. If the containment vessel were to break and fuel rods within it to melt, it could cause a major radiation leak.
09:01 - Radiation levels in the air surrounding the plant have risen fourfold after the explosion, plant operator TEPCO says.
08:45 - The roof above overheating No. 2 reactor is damaged and steam in rising from the complex, Jiji news agency reports.
07:57 - Fresh explosion heard at the plant, Japan's nuclear safety agency says.
06:45 - Some damage has been detected at Fukushima Daiichi No. 2 reactor, but no sharp increase in radiation levels has been seen, Chief Cabinet Secretary Yukio Edano says.
MONDAY, MARCH 14
20:10 - Water levels inside the Fukushima Daiichi complex's No. 2 reactor are almost empty, TEPCO says. Jiji news agency says the operator of the plant has started injecting sea water to the reactor in the hope of cooling it down.
19:52 - Jiji quotes TEPCO as saying nuclear fuel rods at the Fukushima Daiichi complex's No.2 reactor, where levels of water coolant around the reactor core had been reported as falling earlier in the day, are now fully exposed. Jiji says a mel*** of the fuel rods cannot be ruled out.
17:23 - Jiji news agency says Japanese authorities have safely cooled down two nuclear reactors at the Fukushima Daini nuclear plant, close to another nuclear complex where they are still struggling to cool three overheating reactors.
16:17 - Chief Cabinet Secretary Yukio Edano confirms water levels at the Fukushima Daiichi plant No.2 reactor are falling and its cooling functions have stopped.
15:26 - The IAEA says Japan has told the U.N. nuclear watchdog the hydrogen explosion at the No.3 reactor at Fukushima Daiichi did not damage the primary containment vessel.
15:17 - Jiji news agency reports that there has been an explosion at a fuel oil tank at a thermal power plant in Fukushima and that the tank is on fire. It is not immediately clear which company the thermal power plant belonged to.
12:43 - Chief Cabinet Secretary Yukio Edano says a large-scale radiation leakage is unlikely from the Fukushima Daiichi plant's No. 3 reactor hit by an explosion after cooling problems.
11:40 - Jiji quotes TEPCO as saying a fresh explosion that rocked Fukushima Daiichi has not damaged the plant's No.3 reactor vessel.
11:20 - Japan's nuclear safety agency confirms a new explosion rocked the Fukushima Daiichi nuclear power complex, sending a plume of smoke into the air. But it says it cannot confirm whether or not the hydrogen explosion at the plant's No. 3 reactor has led to an uncontrolled leak of radioactivity.
11:11 - Domestic media image shows smoke rising from the No.3 reactor at Japan's Fukushima Daiichi nuclear plant. Japanese TV says there was a hydrogen explosion at the plant.
07:29 - TEPCO says it has reported a rise in radiation levels at its Fukushima Daiichi nuclear power plant to the government.
01:43 - Japan Atomic Power says the cooling process is working at its Tokay No. 2 nuclear power plant's reactor although two of the three diesel power generators used for cooling are out of order. The reactor at the plant, about 120 km (75 miles) north of Tokyo in Ibaraki prefecture, was automatically shut after Friday's earthquake and tsunami.
SUNDAY, MARCH 13
23:37 - Jiji quotes TEPCO as saying it is preparing to put sea water into the No.2 reactor at its Fukushima Daiichi nuclear power plant. The company is already injecting sea water into the No. 1 and No. 3 units at the plant to cool them down and reduce pressure inside reactor container vessels.
15:23 - Chief Cabinet Secretary Edano says there is a risk of an explosion at a building housing at the Fukushima Daiichi complex where an explosion on Saturday blew off the roof off another reactor building.
10:38 - Kyodo quotes TEPCO as saying radiation levels have risen above safe limits around the complex and that the firm has informed the government of an "emergency situation". It did not mean an immediate threat to human health, TEPCO says.
06:20 - The number of individuals exposed to radiation from the Fukushima Daiichi complex could reach as high as 160, an official of the Japan Nuclear and Industrial Safety Agency.
05:41 - In a 20-km radius around the Fukushima Daiichi complex, an estimated 110,000 people have been evacuated, the IAEA says. In a 10-km radius around the nearby Fukushima Daini complex, about 30,000 people have been evacuated.
00:49 - A nuclear accident in Japan on Saturday rates as less serious than both the Three Mile Island accident in 1979 and the 1986 Chernobyl nuclear disaster, Japan's nuclear safety agency said. An official at the agency said it has rated the incident at 4 under the International Nuclear and Radiological Event Scale. Three Mile Island was rated 5 while Chernobyl was rated 7 on the 1 to 7 scale, the official said.
SATURDAY, MARCH 12
22:21 - The IAEA quotes Japanese authorities as saying they are preparing to distribute iodine to people living near the stricken nuclear power complex. Iodine can be used to help protect the body from radioactive poisoning.
20:43 - TEPCO plans to fill the leaking reactor with sea water to cool it and reduce pressure in the unit, Edano says.
"The nuclear reactor is surrounded by a steel reactor container, which is then surrounded by a concrete building," Edano says. "The concrete building collapsed. We found out that the reactor container inside didn't explode."
"We've confirmed that the reactor container was not damaged. The explosion didn't occur inside the reactor container. As such there was no large amount of radiation leakage outside," he adds.
"At this point, there has been no major change to the level of radiation leakage outside (from before and after the explosion), so we'd like everyone to respond calmly."
"We've decided to fill the reactor container with sea water. Trade Minister Kaieda has instructed us to do so. By doing this, we will use boric acid to prevent criticality."
Edano says it will take about five to 10 hours to fill the reactor core with sea water and around 10 days to complete the process. He says due to the falling cooling-water level, hydrogen was generated and leaked into a space between the building and the container. It mixed with oxygen and exploded.
17:47 - Cabinet Secretary Edano confirms an explosion and radiation leak at Fukushima Daiichi. "We are looking into the cause and the situation and we'll make that public when we have further information," Edano says. "At present, we think 10 km evacuation is appropriate."
10:07 - TEPCO has begun releasing pressure from No. 1 reactor at Fukushima Daiichi nuclear plant, the Trade Ministry says. TEPCO says it will prepare for the release of pressure from the second nuclear plant, the Fukushima Daini plant, as pressure mounts. TEPCO and the authorities battle to contain rising pressure at the plants. They say thousands of residents in the area have been evacuated.
09:34 - Kyodo news agency says Japan has begun evacuating about 20,000 people from vicinity of the nuclear plants.
07:19 - TEPCO says it has lost its ability to control pressure in some reactors of a second nuclear power plant at its Fukushima facility. Pressure is stable inside the reactors but rising in the containment vessels, a spokesman says, although he did not know if there would be a need to release pressure at the plant at this point, which would involve a release of radiation.
06:37 - U.S. officials say the U.S. military did not provide any coolant for the Japanese nuclear plant, despite Clinton's earlier remarks. They say U.S. Air Force "assets" in Japan delivered coolant to a nuclear plant. One U.S. official says Japan had asked the United States for the coolant but ultimately handled the matter on its own.
03:14 - Cabinet Secretary Edano says TEPCO realises the need to release pressure inside the plant, that this could cause a small radiation leak.
03:13 - Kyodo news agency quotes Japan's trade minister as saying a radiation leak could take place at the plant.
03:04 - Japan's nuclear safety watchdog confirms TEPCO is considering steps to lower the pressure in a container in the No. 1 reactor. A spokesman for the Nuclear and Industrial Safety Agency says it is unknown whether radiation levels are high in the container, which is inside a turbine building.
02:00 - Kyodo news agency quotes TEPCO as saying pressure inside the No. 1 reactor rose to 1.5 times designed capacity.
01:46 - Jiji quotes TEPCO as saying pressure inside the No. 1 reactor at the plant has been rising, with the risk of a radiation leak. It plans to take measures to release the pressure, the report says.
01:27 - Jiji says Fukushima prefecture expects cooling function at the plant to be restored by 1630 GMT (0130 local)
00:40 - U.S. Secretary of State Hillary Clinton says the United States has transported coolant to the stricken nuclear plant. "We just had our Air Force assets in Japan transport some really important coolant to one of the nuclear plants," Clinton says at a meeting of the President's Export Council.
00:38 - The World Nuclear Association, the main nuclear industry body, says it understands the situation is under control, and water is being pumped into the reactor's cooling system. An analyst at the association says he understood a back-up battery power system had been brought online after about an hour, and begun pumping water back into the cooling system.
FRIDAY, MARCH 11
22:45 - Vienna-based International Atomic Energy Agency (IAEA) says Japan advised that a heightened state of alert has been declared but no release of radiation had been detected.
It says Japanese authorities also reported a fire at the Onagawa nuclear power plant, which has since been extinguished.
"They say Onagawa, Fukushima Daini and Tokay nuclear power plants were also shut down automatically, and no radiation release has been detected," the statement says.
21:55 - The government says radiation has leaked from one of the plant's reactors.
21:49 - Jiji news agency says evacuation area around the plant is extended to 3 km from 2 km and quotes authorities as saying no radioactive leak has been confirmed.
21:34 - TEPCO confirms water levels falling inside reactors at the plant, and says it is trying to avert the exposure of nuclear fuel rods by restoring power to its emergency power system so that it can pump water inside the reactors.
19:46 - The government reveals a cooling problem at TEPCO's Fukushima Daiichi nuclear plant on the northeast coast, which bore the brunt of the quake and tsunami. Chief Cabinet Secretary Yukio Edano says the government has declared an emergency as a precaution but he says there is no radioactive leak.
(Compiled by Mark Bendeich and World Desk Asia)
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