In addition to the proposal by Toshiba, Hitachi and General Electric Co. are expected to file their own proposal.
The proposals will be examinined by TEPCO and METI.

Chubu Electric Power Co. is currently working on decommissioning two rectors at the Hamaoki nuclear complex with work scheduled to end by March, 2037.
[This time estimate is probably closer to fact than the time alloted in the Toshiba estimate for Fukushima.]

Japan Times, April 9, 2011.