Radioactivity in Salt from sea may pose a problem.
Also Radioactivity at 10 million times higher is very serious.
Neighbours take fright over radiation threat.
* Expert says levels not dangerous
* Tourist arrivals plunge in peak season
TOKYO, April 7 (Reuters) – Japan’s neighbours sounded increasingly alarmed over the risk of radiation from the crippled Fukushima nuclear power plant, while figures showed the number of foreign visitors to the country had slumped during what should be the peak tourist season.
The world’s worst nuclear disaster in 25 years is also raising concern over safety in the United States, which has more atomic reactors than any other country, especially at one plant which is similar to the one in Fukushima wrecked by last month’s 9.0 magnitude earthquake and tsunami.
Engineers, who sealed a leak this week that had allowed highly radioactive water into the sea, are now pumping nitrogen into one reactor to prevent the risk of a hydrogen gas explosion, and want to start the process in another two reactors.