Common Sense Canadian

Japan to Speed up Removal of Radioactive Fuel Rods from Reactor 4 Following International Pressure

PostedJune 29, 2012 by in International

Read this June 21 story from Reuters, reporting that Japan’s nuclear crisis minister told the media organization the country will be speeding up efforts to remove dangerous contaminated fuel rods from the badly-damaged reactor 4 building at the Fukushima-Daiichi nuclear plant. The move comes after mounting pressure from international media and a number of American and Japanese politicians, diplomats and nuclear experts – as reported by The Common Sense Canadian last month.

TOKYO (Reuters) – Workers at the crippled Fukushima nuclear plant will begin removing fuel rods from a damaged reactors a year ahead of schedule, a government minister said Thursday, a move to address concerns about the risk of a new quake that could cause a further accident and scatter more radioactive debris.

“We would like to start taking out undamaged fuel this year. Preparation is now under way,” Japan’s nuclear crisis minister, Goshi Hosono, told Reuters in an interview.

“Doing it quickly is important. But we also have to make sure those workers out there, who are struggling under harsh conditions, will not be endangered by trying to move things fast.”

Tokyo Electric Power Co (Tepco), operator of the plant hit by the world’s worst nuclear accident since Chernobyl in 1986, had said in April it aimed to begin removing the fuel rods from the No. 4 reactor at the end of next year.

That would have left large quantities of radioactive fuel rods outside the protection of strong containment vessels for two and a half years after the accident.

Experts say the fuel rods, now covered only by water and a white plastic tarp, could present a risk of a knock-on accident if the reactor building collapsed or the water supply used to keep the rods cool were disrupted by another earthquake.

Some 1,535 fuel assemblies — enough uranium fuel rods to power three reactors — are being stored in a pool atop the mangled No. 4 reactor building. The reactor, which was shut down for maintenance at the time of the March 2011 earthquake and tsunami, was badly damaged by a series of powerful explosions that followed the disaster as power was cut off to the plant.

Hosono said last month during a visit to the Fukushima plant that he expected workers to begin removing fuel from the No.4 reactor’s storage pool next year.

Work began in April to raise what amounts to a giant tent over the building to keep radioactive dust from scattering during the transport of the fuel rods.

Tepco says its analysis shows the No.4 reactor building would hold up in a strong earthquake. But Japanese safety regulators ordered Tepco to recheck its findings last month after measurements showed one of the walls of the reactor building was buckling out by about 3 centimetres (1.2 inches).

The removed uranium fuel rods will be placed in another storage pool at the Fukushima plant, 240 km (150 miles) northeast of Tokyo, officials have said.

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