The operator of Japan's crisis-hit power plant says two of the workers at its facility have been exposed to radiation levels more than legal limit.

The amount of internal and external radiation the two workers at the Fukushima power plant were exposed to exceeded 200 millisieverts, Tokyo Electric Power Company (TEPCO) said on Saturday.

TEPCO removes workers whose external exposure reaches 150 millisieverts from the power plant.

Since the beginning of the nuclear crisis at Fukushima power plant a total of eight workers have been removed from the site.

The destructive earthquake and ensuing tsunami in Japan's northern coasts on March 11 set off nuclear problems by knocking out power to the cooling systems of reactors at the Fukushima Daiichi plant, and caused radiation leaks.

The government ordered the evacuation of people living in a 20-kilometer (12.4-mile) radius around the plant, and told people residing between 20 and 30 kilometers (18.6 miles) from the plant to remain indoors.

TEPCO is trying to remove tons of highly radioactive water, which was used to cool the nuclear fuel in the reactor core and in spent fuel storage pools, from reactor buildings.

The company announced earlier in April that it would manage to reduce radiation leaks from Fukushima plant within three months and to also cool reactors and control the radiation within six to nine months.

MYA/HGH/MMN