Reconstruction minister Tatsuo Hirano will double as minister in charge of reviewing the government's response to the March 11 disasters, Chief Cabinet Secretary Osamu Fujimura said Tuesday.

Hirano will summarize the lessons learned from the catastrophe that devastated Tohoku last March and consider ways to limit the damage from future natural disasters, Fujimura said.

"We'd like to map out crisis management measures as soon as possible" to prepare for possible large earthquakes in the Tokai and Tonankai regions, as well as the next Great Kanto Earthquake, Fujimura said, adding that Hirano's brief does not cover the government's response to the Fukushima nuclear crisis, and nuclear accident minister Goshi Hosono will continue to manage that issue.