Japan's nuclear watchdog on Wednesday ordered the operators of two nuclear plants to recheck whether faults running under the plants are active, in the latest bid to ensure the country's reactors are really safe to run.

JRT has been covering the debate over how earthquake-proof the nuclear plants are. That's a topic that's taken on increased importance as Japan seeks to restart reactors that were shut down after last year's massive earthquake and tsunami, and the ensuing disaster at the Fukushima Daiichi nuclear plant.

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