Japan is to conduct safety tests on all its nuclear plants to check on their resilience to earthquakes and tsunami.
The move follows a 9.0 quake which triggered a tsunami on 11 March which led to a nuclear meltdown at the Fukushima Daiichi nuclear plant.
News agency Jiji Press has reported that Trade Minister Banri Kaieda announced the stress tests and promised there would be no problems with power supplies.
The quake and tsunami levelled homes, businesses and towns along Japan's north-eastern coast and was the country's worst crisis since World War II, leaving 20,000 people dead or missing, the BBC reports.
Only 19 of Japan's 54 reactors are now operating, with more due to shut down for regular checks, forcing people to save power.
The tests are designed to determine how well nuclear plants can withstand major disasters such as the tsunami.