channel 9 and through 26 public address towers set up inside the city limits," said Fumiyoshi Kato, an official in the municipal nuclear power safety section.

The evacuation areas are mostly elementary schools and public halls. However, Kato said they do not contain much in the way of emergency supplies.

But one pressing issue is how to deal with residents who try to flee the area after an accident.

Antinuclear activists have long claimed that large steel gates on several roads leading into Tsuruga would be closed to keep people who might have been exposed to radiation from leaving.