The eight are three control room operators and five who worked to restore power to the Fukushima Dai—ichi plant that was knocked out by the earthquake and tsunami March 11.

Japan says six more workers might have exceeded the radiation exposure limit at a crippled nuclear plant.

The health and labour ministry says preliminary results on those workers on Monday would bring the number of workers exceeding the government—set limit to eight.

The eight are three control room operators and five who worked to restore power to the Fukushima Dai—ichi plant that was knocked out by the earthquake and tsunami March 11.

The government soon after the disaster raised the radiation limit for men to 250 millisieverts from the standard 100 millisieverts so workers could tackle the emergency.