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CIVIL NUCLEAR
EU, Japan join forces to improve nuclear safety
by Staff Writers
Brussels (AFP) May 28, 2011

Radiation monitors broke in Japan disaster: report
Tokyo (AFP) May 28, 2011 - Most radiation monitoring systems near Japan's Fukushima atomic power plant broke down after the earthquake and tsunami which triggered the nuclear crisis, Kyodo news agency said Saturday.

In Fukushima prefecture, 22 out of the 23 monitors around the crippled Fukushima Daiichi plant and nearby Fukushima Daini stopped sending data about three hours after the massive March 11 quake as the crisis unfolded, it said, quoting prefectural officials.

Some were destroyed by the quake or tsunami but disruptions to communication lines and power supplies were the main causes of the breakdowns, one official told Kyodo.

Monitors with satellite line backups also failed to send data, with their antennas probably hit by the disasters.

The quake-tsunami crippled the Fukushima Daiichi nuclear plant, which has leaked high levels of radiation into the environment with meltdowns in three of its reactors.

In neighbouring Miyagi prefecture, home to the Onagawa nuclear plant, four out of seven monitors broke down. The other three transmitted data via satellite connections but failed after about five hours, officials quoted by Kyodo said.

Monitors measuring radiation levels around the Tokai Daini nuclear plant in Ibaraki prefecture also failed when their emergency batteries died 20 hours after the disaster, with no data for three hours until power was restored.

"It is a general rule that radiation levels near the facilities are always monitored. It is a problem that all the equipment broke down," an official of Ibaraki's radiation monitoring centre told Kyodo.

Europe and Japan agreed Saturday to join forces in efforts to promote tighter international standards for nuclear safety in the wake of the atomic crisis in Japan.

"Going into the future, nuclear safety is a matter of great importance for Japan and the European Union, for the entire world, and for the Earth," Japanese Prime Minister Naoto Kan said after an EU-Japan summit in Brussels.

At the same time, Kan urged the 27-nation EU to ease restrictions on Japanese food imports that were imposed over concerns of potential radioactive contamination following the Fukushima power plant accident.

"I have asked for relaxation measures based on scientific evidence," he told a news conference held alongside EU president Herman Van Rompuy and European Commission president Jose Manuel Barroso.

"I have also received a response to that, that the EU also believes any measures should be based on scientific evidence," he said

Last month, EU authorities tightened the acceptable level of radiation in Japanese food imports after the Fukushima nuclear crisis, which was sparked by the massive earthquake and tsunami in March that killed 25,000 people.

The EU and Japan also agreed Saturday to cooperate in monitoring the impact of the world's worst nuclear disaster since Chernobyl, as well as implementing "comprehensive risk and safety assessments" at plants and encouraging other nations to do the same.

"Radiation does not stop at borders and neither should our collective responsibility. So when we talk nuclear, we talk global," Barroso said.

The Japanese nuclear crisis has prompted the EU to organise "stress tests" on the bloc's 143 nuclear reactors in order to evaluate their ability to survive earthquakes, floods and man-made crises such as plane crashes.

"We want these stress tests to go beyond Europe," Barroso said.

Nuclear safety was already high on the agenda of a G8 summit that Kan attended in Deauville, France, this week, where the leaders of the world's top economies called for stronger nuclear safety rules.

earlier related report
New cooling trouble at Japan nuclear plant
Tokyo (AFP) May 29, 2011 - Emergency workers on Sunday restored the cooling system of a reactor which had come to a halt after escaping major damage from the March 11 quake and damage at the crippled Fukushima nuclear power plant.

The water pump to cool the reactor and the pool for spent nuclear fuel at the facility's No. 5 unit was found to be at a standstill late Saturday, the plant's operator Tokyo Electric Power Co. (TEPCO) said.

The work began at 8:00 am Sunday (2300 GMT Saturday) to replace the pump and it was completed in four and a half hours.

"There was a motor problem in the pump and we replaced it with a backup pump which is operating now," TEPCO official Ryoko Sakai said.

The temperature of water in the reactor, which was 68 degrees Celsius when the trouble was found, reached 93.7 degrees Celsius before the backup pump was activated, the official said.

The 9.0-magnitude quake and monster tsunami ravaged cooling systems at the Fukushima Daiichi plant, causing it to leak radiation from damaged reactors into the environment, including the Pacific Ocean, in the worst nuclear accident since the 1986 Chernobyl disaster.

Of the plant's six reactors, the No.1, 2 and 3 units are presumed to have suffered a meltdown, TEPCO has said.

The No. 5 and 6 reactors were in a cold shutdown for regular checkups at the time of the disaster. They have remained stable as an emergency power generator continued supplying electricity to them.




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CIVIL NUCLEAR
IAEA mission visits two other nuclear plants in Japan
Vienna (AFP) May 27, 2011
A team of foreign experts have visited two other nuclear plants in Japan before they go on to inspect the Fukushima plant at the centre of the current emergency, the UN atomic watchdog said Friday. The International Atomic Energy Agency said in a statement that its special fact-finding mission visited Tokai Daini Nuclear Power Plant and then the Fukushima Daini Nuclear Power Plant on Thursda ... read more


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