The Nuclear Regulatory Commission has launched a two-step review of U.S. nuclear power plants in the wake of the nuclear crisis in Japan.

The commission voted Wednesday to set up a task force, made up of senior staff and former NRC experts, that will conduct short-term and long-term analyses of lessons learned from Japan. The report also will address how lessons can be applied to the 104 U.S. nuclear reactors.

NRC Chairman Gregory Jaczko said it was important to examine the crisis caused by the March 11 earthquake and tsunami to determine whether policy changes are needed in the U.S.

The short-term review is to be completed within three months, with updates after 30 days and 60 days. The longer review should be completed by the end of the year.