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Japan

Fukushima officially worst nuclear disaster since Chernobyl

An aerial view of the Fukushima Daiichi Nuclear Power Station
An aerial view of the Fukushima Daiichi Nuclear Power Station Reuters
2 min

Japan has raised the danger level of the crisis at the Fukushima nuclear plant to seven, the highest rating on the scale and the same given to the Chernobyl disaster. The government says that radiation leaks from the plant are nonetheless declining.

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“Step by step, the reactors in the Fukushima Daiichi power plant are moving
toward stability,” Prime Minister Naoto Kan told a press conference on Tuesday.

According to Japan’s nuclear safety authority, Nisa, the decision to raise the threat level reflects the total release of radiation since last month’s earthquake and tsunami, and its “widespread impact” on the air, food produce, tap water and the ocean.

Level seven on the International Nuclear and Radiological Event Scale (Ines) signifies a major accident with significant effects on public health and the environment. The Fukushima crisis was previously rated at level five, the same as the Three Mile Island disaster in the US.

Nisa says that far less radiation has so far been released from Fukushima than from the Chernobyl nuclear plant in 1986: only around 10 per cent, according to current estimates.

However, the levels could continue to rise. On Tuesday, traces of the highly radioactive element strontium were found in soil and plants near the Fukushima plant, the government confirmed.

Japan has “no plans” to stop operating nuclear reactors in the wake of the crisis, said Prime Minister Kan, though he acknowledged that safety had to be improved.

Energy company Kyushu Electric Power announced on Tuesday it would suspend plans to build a new reactor at its Kagoshima plant, after the local governor told the company that the expansion was not “warranted”.

Fukushima’s operator Tepco was forced to evacuate the site again on Tuesday after another 6.0-magnitude aftershock. A fire broke out at Reactor Four, but has since been extinguished.

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