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Japan raises nuclear alert level as firemen head to plant

Japan has raised the alert level at its quake-damaged nuclear plant from four to five on a seven-point international scale of atomic incidents.

The crisis at the Fukushima Daiichi site, previously rated as a local problem, is now regarded as having "wider consequences".

Rupert Wingfield-Hayes met Britons preparing to leave Japan, and says a team of Tokyo firemen are the latest 'heroes' in the country's bid to repair the nuclear plant.

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