Japan is expected to receive a report from the International Atomic Energy Agency (IAEA) on Tuesday that will decide on the plan for radioactive water from the Fukushima nuclear power plant to be discharged into the ocean over the next 30 to 40 years.

The IAEA is expected to approve the country’s plan for the radioactive water to be discharged into the Pacific Ocean, writes news agency Reuters.

The head of the agency, Rafael Grossi, will begin a four-day visit to Japan on Tuesday, where he will meet with Japanese Prime Minister Fumio Kishida and deliver the results of a two-year safety investigation.

Japan has not announced a specific date for when it will start releasing the radioactive water.

The Japanese government’s plan has been met with strong opposition from several neighboring countries, including China.

China has called the plan ”irresponsible and unpopular” and believes it is a threat to food safety.

The Chinese embassy in Japan reiterated its protest on Tuesday.

The Japanese fishing industry also fears reputational risk and further loss of business.

Japan plans to release 1.3 trillion liters of water that has been used to cool the Fukushima nuclear power plant, which was badly damaged in an earthquake in 2011.

The water has been filtered to remove most of the radioactive elements.

However, it failed to separate the substance tritium - a hydrogen isotope that is difficult to separate from water.

The treated water will be diluted to well below internationally approved levels of tritium before being released into the Pacific Ocean.

Nuclear power plants around the world regularly release water containing more tritium than the concentration found in the water from the Fukushima plant.