Dec. 20 (Bloomberg) -- U.S. Nuclear Regulatory Commission Chairman Gregory Jaczko said he’s satisfied with Tokyo Electric Power Co.’s efforts to end the crisis at the Fukushima nuclear plant.

Jaczko said the melted fuel in the reactors has cooled enough to prevent any further releases of radiation beyond the station. He was speaking to reporters today in Tokyo after a visit to the wrecked Fukushima Dai-Ichi nuclear plant.

To contact the reporter on this story: Jacob Adelman in Tokyo at jadelman1@bloomberg.net

To contact the editor responsible for this story: Aaron Sheldrick at asheldrick@bloomberg.net