Date: Saturday, June 04, 2011 09:05 +0900 (JST)
The Japanese science ministry has admitted failing to release some of its projections of how radioactive substances would spread if they leaked from the Fukushima Daini nuclear power plant.
The science ministry used a computer system called SPEEDI to calculate how radiation would spread depending on the weather and terrain.
It said on Friday that it had failed to release 37 projections for the Fukushima Daini plant. It made the projections once an hour from 6PM on March 11 to 9AM on March 13.
The ministry said it had overlooked the existence of the data because it stopped making projections for the Fukushima Daini plant on March 13.
It was found on Thursday that the Nuclear and Industrial Safety Agency had failed to release 5 SPEEDI calculations for the Fukushima Daiichi and Fukushima Daini nuclear plants.
The government said in May that it would release all projections made with the SPEEDI system.