TEPCO is worried because, in case some guidelines of the Nuclear Regularization Authority are introduced, it might have to close down the Kashiwazaki-Kariwa plant in central Japan – this plant is the biggest nuke plant.
This has been reported in timesofindia.indiatimes.com of dated 25th of January 2013.
The problem is with regard to defining what an active fault is.
Till now, an active fault was defined as a crack in the crust of the Earth where there has been some movement in the last 120,000 to 130,000 year range – that is being upgraded to 400,000 years.
The intention is to ensure that a disaster like Fukushima-Daiichi of March-2011 does not happen again.
The new guidelines would be put into effect in July-2013.
It may be recalled that in 2007, the Kashiwazakai-Kariwa plant had seen an earthquake of 6.8-magnitude in the region – many houses were destroyed in that quake but it did not affect the nuke plant except for a minor radiation leak.
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